From 48848de82c0c4b849ffe31d2250d5c067a1bd1aa Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Fri, 11 Mar 2022 14:59:05 -0800
Subject: [PATCH] Store settings as a global via a gpui app_state

---
 crates/chat_panel/src/chat_panel.rs           |  51 ++--
 crates/contacts_panel/src/contacts_panel.rs   |  10 +-
 crates/diagnostics/src/diagnostics.rs         |  56 +---
 crates/diagnostics/src/items.rs               |  14 +-
 crates/editor/src/editor.rs                   | 267 +++++++-----------
 crates/editor/src/element.rs                  |   5 +-
 crates/editor/src/items.rs                    |  32 +--
 crates/file_finder/src/file_finder.rs         |  91 ++----
 crates/go_to_line/src/go_to_line.rs           |  23 +-
 crates/outline/src/outline.rs                 |  43 ++-
 crates/project_panel/src/project_panel.rs     |  22 +-
 crates/project_symbols/src/project_symbols.rs |  30 +-
 crates/search/src/buffer_search.rs            |  34 +--
 crates/search/src/project_search.rs           |  44 ++-
 crates/server/src/rpc.rs                      |  17 +-
 crates/theme_selector/src/theme_selector.rs   | 147 ++++------
 crates/workspace/src/lsp_status.rs            |   9 +-
 crates/workspace/src/pane.rs                  |   8 +-
 crates/workspace/src/settings.rs              |  54 ++--
 crates/workspace/src/sidebar.rs               |  26 +-
 crates/workspace/src/status_bar.rs            |  13 +-
 crates/workspace/src/workspace.rs             |  55 ++--
 crates/zed/src/main.rs                        |  36 +--
 crates/zed/src/test.rs                        |   7 +-
 crates/zed/src/zed.rs                         |  45 +--
 25 files changed, 406 insertions(+), 733 deletions(-)

diff --git a/crates/chat_panel/src/chat_panel.rs b/crates/chat_panel/src/chat_panel.rs
index 93c51a1b40e75d6db1b8528aff6f8048509eab71..ceeddc599a0d3d90b0328e2d6d94148b98e42002 100644
--- a/crates/chat_panel/src/chat_panel.rs
+++ b/crates/chat_panel/src/chat_panel.rs
@@ -12,7 +12,7 @@ use gpui::{
     AppContext, Entity, ModelHandle, MutableAppContext, RenderContext, Subscription, Task, View,
     ViewContext, ViewHandle,
 };
-use postage::{prelude::Stream, watch};
+use postage::prelude::Stream;
 use std::sync::Arc;
 use time::{OffsetDateTime, UtcOffset};
 use util::{ResultExt, TryFutureExt};
@@ -27,7 +27,6 @@ pub struct ChatPanel {
     message_list: ListState,
     input_editor: ViewHandle<Editor>,
     channel_select: ViewHandle<Select>,
-    settings: watch::Receiver<Settings>,
     local_timezone: UtcOffset,
     _observe_status: Task<()>,
 }
@@ -48,42 +47,33 @@ impl ChatPanel {
     pub fn new(
         rpc: Arc<Client>,
         channel_list: ModelHandle<ChannelList>,
-        settings: watch::Receiver<Settings>,
         cx: &mut ViewContext<Self>,
     ) -> Self {
         let input_editor = cx.add_view(|cx| {
-            let mut editor = Editor::auto_height(
-                4,
-                settings.clone(),
-                Some(|theme| theme.chat_panel.input_editor.clone()),
-                cx,
-            );
+            let mut editor =
+                Editor::auto_height(4, Some(|theme| theme.chat_panel.input_editor.clone()), cx);
             editor.set_soft_wrap_mode(SoftWrap::EditorWidth, cx);
             editor
         });
         let channel_select = cx.add_view(|cx| {
             let channel_list = channel_list.clone();
             Select::new(0, cx, {
-                let settings = settings.clone();
                 move |ix, item_type, is_hovered, cx| {
                     Self::render_channel_name(
                         &channel_list,
                         ix,
                         item_type,
                         is_hovered,
-                        &settings.borrow().theme.chat_panel.channel_select,
+                        &cx.app_state::<Settings>().theme.chat_panel.channel_select,
                         cx,
                     )
                 }
             })
-            .with_style({
-                let settings = settings.clone();
-                move |_| {
-                    let theme = &settings.borrow().theme.chat_panel.channel_select;
-                    SelectStyle {
-                        header: theme.header.container.clone(),
-                        menu: theme.menu.clone(),
-                    }
+            .with_style(move |cx| {
+                let theme = &cx.app_state::<Settings>().theme.chat_panel.channel_select;
+                SelectStyle {
+                    header: theme.header.container.clone(),
+                    menu: theme.menu.clone(),
                 }
             })
         });
@@ -93,7 +83,7 @@ impl ChatPanel {
             move |ix, cx| {
                 let this = this.upgrade(cx).unwrap().read(cx);
                 let message = this.active_channel.as_ref().unwrap().0.read(cx).message(ix);
-                this.render_message(message)
+                this.render_message(message, cx)
             }
         });
         message_list.set_scroll_handler(|visible_range, cx| {
@@ -121,7 +111,6 @@ impl ChatPanel {
             message_list,
             input_editor,
             channel_select,
-            settings,
             local_timezone: cx.platform().local_timezone(),
             _observe_status,
         };
@@ -210,8 +199,8 @@ impl ChatPanel {
         cx.notify();
     }
 
-    fn render_channel(&self) -> ElementBox {
-        let theme = &self.settings.borrow().theme;
+    fn render_channel(&self, cx: &mut RenderContext<Self>) -> ElementBox {
+        let theme = &cx.app_state::<Settings>().theme;
         Flex::column()
             .with_child(
                 Container::new(ChildView::new(&self.channel_select).boxed())
@@ -219,7 +208,7 @@ impl ChatPanel {
                     .boxed(),
             )
             .with_child(self.render_active_channel_messages())
-            .with_child(self.render_input_box())
+            .with_child(self.render_input_box(cx))
             .boxed()
     }
 
@@ -233,9 +222,9 @@ impl ChatPanel {
         Flexible::new(1., true, messages).boxed()
     }
 
-    fn render_message(&self, message: &ChannelMessage) -> ElementBox {
+    fn render_message(&self, message: &ChannelMessage, cx: &AppContext) -> ElementBox {
         let now = OffsetDateTime::now_utc();
-        let settings = self.settings.borrow();
+        let settings = cx.app_state::<Settings>();
         let theme = if message.is_pending() {
             &settings.theme.chat_panel.pending_message
         } else {
@@ -277,8 +266,8 @@ impl ChatPanel {
         .boxed()
     }
 
-    fn render_input_box(&self) -> ElementBox {
-        let theme = &self.settings.borrow().theme;
+    fn render_input_box(&self, cx: &AppContext) -> ElementBox {
+        let theme = &cx.app_state::<Settings>().theme;
         Container::new(ChildView::new(&self.input_editor).boxed())
             .with_style(theme.chat_panel.input_editor.container)
             .boxed()
@@ -315,7 +304,7 @@ impl ChatPanel {
     }
 
     fn render_sign_in_prompt(&self, cx: &mut RenderContext<Self>) -> ElementBox {
-        let theme = &self.settings.borrow().theme;
+        let theme = cx.app_state::<Settings>().theme.clone();
         let rpc = self.rpc.clone();
         let this = cx.handle();
 
@@ -391,12 +380,12 @@ impl View for ChatPanel {
     }
 
     fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
-        let theme = &self.settings.borrow().theme;
         let element = if self.rpc.user_id().is_some() {
-            self.render_channel()
+            self.render_channel(cx)
         } else {
             self.render_sign_in_prompt(cx)
         };
+        let theme = &cx.app_state::<Settings>().theme;
         ConstrainedBox::new(
             Container::new(element)
                 .with_style(theme.chat_panel.container)
diff --git a/crates/contacts_panel/src/contacts_panel.rs b/crates/contacts_panel/src/contacts_panel.rs
index 9c8f4368a69777c727ae33a93f8ac6bbbab8d5dc..b5740a5ed75bde0fdfd7233133a4afd025c2f80e 100644
--- a/crates/contacts_panel/src/contacts_panel.rs
+++ b/crates/contacts_panel/src/contacts_panel.rs
@@ -8,13 +8,11 @@ use gpui::{
     Element, ElementBox, Entity, LayoutContext, ModelHandle, RenderContext, Subscription, View,
     ViewContext,
 };
-use postage::watch;
 use workspace::{AppState, JoinProject, JoinProjectParams, Settings};
 
 pub struct ContactsPanel {
     contacts: ListState,
     user_store: ModelHandle<UserStore>,
-    settings: watch::Receiver<Settings>,
     _maintain_contacts: Subscription,
 }
 
@@ -42,7 +40,6 @@ impl ContactsPanel {
             ),
             _maintain_contacts: cx.observe(&app_state.user_store, Self::update_contacts),
             user_store: app_state.user_store.clone(),
-            settings: app_state.settings.clone(),
         }
     }
 
@@ -58,7 +55,8 @@ impl ContactsPanel {
         app_state: Arc<AppState>,
         cx: &mut LayoutContext,
     ) -> ElementBox {
-        let theme = &app_state.settings.borrow().theme.contacts_panel;
+        let theme = cx.app_state::<Settings>().theme.clone();
+        let theme = &theme.contacts_panel;
         let project_count = collaborator.projects.len();
         let font_cache = cx.font_cache();
         let line_height = theme.unshared_project.name.text.line_height(font_cache);
@@ -237,8 +235,8 @@ impl View for ContactsPanel {
         "ContactsPanel"
     }
 
-    fn render(&mut self, _: &mut RenderContext<Self>) -> ElementBox {
-        let theme = &self.settings.borrow().theme.contacts_panel;
+    fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
+        let theme = &cx.app_state::<Settings>().theme.contacts_panel;
         Container::new(List::new(self.contacts.clone()).boxed())
             .with_style(theme.container)
             .boxed()
diff --git a/crates/diagnostics/src/diagnostics.rs b/crates/diagnostics/src/diagnostics.rs
index 5fbd5c2bcb87fb33bf64d88de772840746bf0da8..2890f97c5155c9bcce22cae49c968dfa1d88b87d 100644
--- a/crates/diagnostics/src/diagnostics.rs
+++ b/crates/diagnostics/src/diagnostics.rs
@@ -15,7 +15,6 @@ use gpui::{
 use language::{
     Bias, Buffer, Diagnostic, DiagnosticEntry, DiagnosticSeverity, Point, Selection, SelectionGoal,
 };
-use postage::watch;
 use project::{DiagnosticSummary, Project, ProjectPath};
 use std::{
     any::{Any, TypeId},
@@ -26,7 +25,7 @@ use std::{
     sync::Arc,
 };
 use util::TryFutureExt;
-use workspace::{ItemHandle, ItemNavHistory, ItemViewHandle as _, Workspace};
+use workspace::{ItemHandle, ItemNavHistory, ItemViewHandle as _, Settings, Workspace};
 
 action!(Deploy);
 
@@ -51,7 +50,6 @@ struct ProjectDiagnosticsEditor {
     excerpts: ModelHandle<MultiBuffer>,
     path_states: Vec<PathState>,
     paths_to_update: BTreeSet<ProjectPath>,
-    settings: watch::Receiver<workspace::Settings>,
 }
 
 struct PathState {
@@ -86,9 +84,9 @@ impl View for ProjectDiagnosticsEditor {
         "ProjectDiagnosticsEditor"
     }
 
-    fn render(&mut self, _: &mut RenderContext<Self>) -> ElementBox {
+    fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
         if self.path_states.is_empty() {
-            let theme = &self.settings.borrow().theme.project_diagnostics;
+            let theme = &cx.app_state::<Settings>().theme.project_diagnostics;
             Label::new(
                 "No problems in workspace".to_string(),
                 theme.empty_message.clone(),
@@ -113,7 +111,6 @@ impl ProjectDiagnosticsEditor {
     fn new(
         model: ModelHandle<ProjectDiagnostics>,
         workspace: WeakViewHandle<Workspace>,
-        settings: watch::Receiver<workspace::Settings>,
         cx: &mut ViewContext<Self>,
     ) -> Self {
         let project = model.read(cx).project.clone();
@@ -131,12 +128,7 @@ impl ProjectDiagnosticsEditor {
 
         let excerpts = cx.add_model(|cx| MultiBuffer::new(project.read(cx).replica_id()));
         let editor = cx.add_view(|cx| {
-            let mut editor = Editor::for_buffer(
-                excerpts.clone(),
-                Some(project.clone()),
-                settings.clone(),
-                cx,
-            );
+            let mut editor = Editor::for_buffer(excerpts.clone(), Some(project.clone()), cx);
             editor.set_vertical_scroll_margin(5, cx);
             editor
         });
@@ -151,7 +143,6 @@ impl ProjectDiagnosticsEditor {
             workspace,
             excerpts,
             editor,
-            settings,
             path_states: Default::default(),
             paths_to_update,
         };
@@ -303,10 +294,7 @@ impl ProjectDiagnosticsEditor {
                                 blocks_to_add.push(BlockProperties {
                                     position: header_position,
                                     height: 2,
-                                    render: diagnostic_header_renderer(
-                                        primary,
-                                        self.settings.clone(),
-                                    ),
+                                    render: diagnostic_header_renderer(primary),
                                     disposition: BlockDisposition::Above,
                                 });
                             }
@@ -324,11 +312,7 @@ impl ProjectDiagnosticsEditor {
                                     blocks_to_add.push(BlockProperties {
                                         position: (excerpt_id.clone(), entry.range.start.clone()),
                                         height: diagnostic.message.matches('\n').count() as u8 + 1,
-                                        render: diagnostic_block_renderer(
-                                            diagnostic,
-                                            true,
-                                            self.settings.clone(),
-                                        ),
+                                        render: diagnostic_block_renderer(diagnostic, true),
                                         disposition: BlockDisposition::Below,
                                     });
                                 }
@@ -466,12 +450,7 @@ impl workspace::Item for ProjectDiagnostics {
         nav_history: ItemNavHistory,
         cx: &mut ViewContext<Self::View>,
     ) -> Self::View {
-        let diagnostics = ProjectDiagnosticsEditor::new(
-            handle,
-            workspace.weak_handle(),
-            workspace.settings(),
-            cx,
-        );
+        let diagnostics = ProjectDiagnosticsEditor::new(handle, workspace.weak_handle(), cx);
         diagnostics
             .editor
             .update(cx, |editor, _| editor.set_nav_history(Some(nav_history)));
@@ -488,11 +467,11 @@ impl workspace::ItemView for ProjectDiagnosticsEditor {
         Box::new(self.model.clone())
     }
 
-    fn tab_content(&self, style: &theme::Tab, _: &AppContext) -> ElementBox {
+    fn tab_content(&self, style: &theme::Tab, cx: &AppContext) -> ElementBox {
         render_summary(
             &self.summary,
             &style.label.text,
-            &self.settings.borrow().theme.project_diagnostics,
+            &cx.app_state::<Settings>().theme.project_diagnostics,
         )
     }
 
@@ -554,12 +533,8 @@ impl workspace::ItemView for ProjectDiagnosticsEditor {
     where
         Self: Sized,
     {
-        let diagnostics = ProjectDiagnosticsEditor::new(
-            self.model.clone(),
-            self.workspace.clone(),
-            self.settings.clone(),
-            cx,
-        );
+        let diagnostics =
+            ProjectDiagnosticsEditor::new(self.model.clone(), self.workspace.clone(), cx);
         diagnostics.editor.update(cx, |editor, _| {
             editor.set_nav_history(Some(nav_history));
         });
@@ -586,13 +561,10 @@ impl workspace::ItemView for ProjectDiagnosticsEditor {
     }
 }
 
-fn diagnostic_header_renderer(
-    diagnostic: Diagnostic,
-    settings: watch::Receiver<workspace::Settings>,
-) -> RenderBlock {
+fn diagnostic_header_renderer(diagnostic: Diagnostic) -> RenderBlock {
     let (message, highlights) = highlight_diagnostic_message(&diagnostic.message);
     Arc::new(move |cx| {
-        let settings = settings.borrow();
+        let settings = cx.app_state::<Settings>();
         let theme = &settings.theme.editor;
         let style = &theme.diagnostic_header;
         let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
@@ -852,7 +824,7 @@ mod tests {
         // Open the project diagnostics view while there are already diagnostics.
         let model = cx.add_model(|_| ProjectDiagnostics::new(project.clone()));
         let view = cx.add_view(0, |cx| {
-            ProjectDiagnosticsEditor::new(model, workspace.downgrade(), params.settings, cx)
+            ProjectDiagnosticsEditor::new(model, workspace.downgrade(), cx)
         });
 
         view.next_notification(&cx).await;
diff --git a/crates/diagnostics/src/items.rs b/crates/diagnostics/src/items.rs
index 581999919dadeb5bf0475a707e6b70c3427369d2..13d90f01190ea0eeddf14585193f22097988b326 100644
--- a/crates/diagnostics/src/items.rs
+++ b/crates/diagnostics/src/items.rs
@@ -2,22 +2,16 @@ use crate::render_summary;
 use gpui::{
     elements::*, platform::CursorStyle, Entity, ModelHandle, RenderContext, View, ViewContext,
 };
-use postage::watch;
 use project::Project;
 use workspace::{Settings, StatusItemView};
 
 pub struct DiagnosticSummary {
-    settings: watch::Receiver<Settings>,
     summary: project::DiagnosticSummary,
     in_progress: bool,
 }
 
 impl DiagnosticSummary {
-    pub fn new(
-        project: &ModelHandle<Project>,
-        settings: watch::Receiver<Settings>,
-        cx: &mut ViewContext<Self>,
-    ) -> Self {
+    pub fn new(project: &ModelHandle<Project>, cx: &mut ViewContext<Self>) -> Self {
         cx.subscribe(project, |this, project, event, cx| match event {
             project::Event::DiskBasedDiagnosticsUpdated => {
                 cx.notify();
@@ -35,7 +29,6 @@ impl DiagnosticSummary {
         })
         .detach();
         Self {
-            settings,
             summary: project.read(cx).diagnostic_summary(cx),
             in_progress: project.read(cx).is_running_disk_based_diagnostics(),
         }
@@ -54,10 +47,9 @@ impl View for DiagnosticSummary {
     fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
         enum Tag {}
 
-        let theme = &self.settings.borrow().theme.project_diagnostics;
-
         let in_progress = self.in_progress;
-        MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
+        MouseEventHandler::new::<Tag, _, _>(0, cx, |_, cx| {
+            let theme = &cx.app_state::<Settings>().theme.project_diagnostics;
             if in_progress {
                 Label::new(
                     "Checking... ".to_string(),
diff --git a/crates/editor/src/editor.rs b/crates/editor/src/editor.rs
index 05443553591d9c5eb00d962122ef464c622cfb1c..d02ddf7162f79cae8f0eb714708bcacef814d8cb 100644
--- a/crates/editor/src/editor.rs
+++ b/crates/editor/src/editor.rs
@@ -40,7 +40,6 @@ pub use multi_buffer::{
     Anchor, AnchorRangeExt, ExcerptId, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint,
 };
 use ordered_float::OrderedFloat;
-use postage::watch;
 use project::{Project, ProjectTransaction};
 use serde::{Deserialize, Serialize};
 use smallvec::SmallVec;
@@ -428,7 +427,6 @@ pub struct Editor {
     scroll_position: Vector2F,
     scroll_top_anchor: Option<Anchor>,
     autoscroll_request: Option<Autoscroll>,
-    settings: watch::Receiver<Settings>,
     soft_wrap_mode_override: Option<settings::SoftWrap>,
     get_field_editor_theme: Option<GetFieldEditorTheme>,
     project: Option<ModelHandle<Project>>,
@@ -795,25 +793,16 @@ pub struct NavigationData {
 
 impl Editor {
     pub fn single_line(
-        settings: watch::Receiver<Settings>,
         field_editor_style: Option<GetFieldEditorTheme>,
         cx: &mut ViewContext<Self>,
     ) -> Self {
         let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
         let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
-        Self::new(
-            EditorMode::SingleLine,
-            buffer,
-            None,
-            settings,
-            field_editor_style,
-            cx,
-        )
+        Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
     }
 
     pub fn auto_height(
         max_lines: usize,
-        settings: watch::Receiver<Settings>,
         field_editor_style: Option<GetFieldEditorTheme>,
         cx: &mut ViewContext<Self>,
     ) -> Self {
@@ -823,7 +812,6 @@ impl Editor {
             EditorMode::AutoHeight { max_lines },
             buffer,
             None,
-            settings,
             field_editor_style,
             cx,
         )
@@ -832,10 +820,9 @@ impl Editor {
     pub fn for_buffer(
         buffer: ModelHandle<MultiBuffer>,
         project: Option<ModelHandle<Project>>,
-        settings: watch::Receiver<Settings>,
         cx: &mut ViewContext<Self>,
     ) -> Self {
-        Self::new(EditorMode::Full, buffer, project, settings, None, cx)
+        Self::new(EditorMode::Full, buffer, project, None, cx)
     }
 
     pub fn clone(&self, nav_history: ItemNavHistory, cx: &mut ViewContext<Self>) -> Self {
@@ -843,7 +830,6 @@ impl Editor {
             self.mode,
             self.buffer.clone(),
             self.project.clone(),
-            self.settings.clone(),
             self.get_field_editor_theme,
             cx,
         );
@@ -858,13 +844,12 @@ impl Editor {
         mode: EditorMode,
         buffer: ModelHandle<MultiBuffer>,
         project: Option<ModelHandle<Project>>,
-        settings: watch::Receiver<Settings>,
         get_field_editor_theme: Option<GetFieldEditorTheme>,
         cx: &mut ViewContext<Self>,
     ) -> Self {
         let display_map = cx.add_model(|cx| {
-            let settings = settings.borrow();
-            let style = build_style(&*settings, get_field_editor_theme, cx);
+            let settings = cx.app_state::<Settings>();
+            let style = build_style(settings, get_field_editor_theme, cx);
             DisplayMap::new(
                 buffer.clone(),
                 settings.tab_size,
@@ -905,7 +890,6 @@ impl Editor {
             snippet_stack: Default::default(),
             select_larger_syntax_node_stack: Vec::new(),
             active_diagnostics: None,
-            settings,
             soft_wrap_mode_override: None,
             get_field_editor_theme,
             project,
@@ -982,7 +966,7 @@ impl Editor {
     }
 
     fn style(&self, cx: &AppContext) -> EditorStyle {
-        build_style(&*self.settings.borrow(), self.get_field_editor_theme, cx)
+        build_style(cx.app_state::<Settings>(), self.get_field_editor_theme, cx)
     }
 
     pub fn set_placeholder_text(
@@ -2691,7 +2675,7 @@ impl Editor {
         }
 
         self.start_transaction(cx);
-        let tab_size = self.settings.borrow().tab_size;
+        let tab_size = cx.app_state::<Settings>().tab_size;
         let mut selections = self.local_selections::<Point>(cx);
         let mut last_indent = None;
         self.buffer.update(cx, |buffer, cx| {
@@ -2768,7 +2752,7 @@ impl Editor {
         }
 
         self.start_transaction(cx);
-        let tab_size = self.settings.borrow().tab_size;
+        let tab_size = cx.app_state::<Settings>().tab_size;
         let selections = self.local_selections::<Point>(cx);
         let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
         let mut deletion_ranges = Vec::new();
@@ -4404,7 +4388,7 @@ impl Editor {
 
                     // Position the selection in the rename editor so that it matches the current selection.
                     let rename_editor = cx.add_view(|cx| {
-                        let mut editor = Editor::single_line(this.settings.clone(), None, cx);
+                        let mut editor = Editor::single_line(None, cx);
                         editor
                             .buffer
                             .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
@@ -4588,11 +4572,7 @@ impl Editor {
                 for (block_id, diagnostic) in &active_diagnostics.blocks {
                     new_styles.insert(
                         *block_id,
-                        diagnostic_block_renderer(
-                            diagnostic.clone(),
-                            is_valid,
-                            self.settings.clone(),
-                        ),
+                        diagnostic_block_renderer(diagnostic.clone(), is_valid),
                     );
                 }
                 self.display_map
@@ -4635,11 +4615,7 @@ impl Editor {
                         BlockProperties {
                             position: buffer.anchor_after(entry.range.start),
                             height: message_height,
-                            render: diagnostic_block_renderer(
-                                diagnostic,
-                                true,
-                                self.settings.clone(),
-                            ),
+                            render: diagnostic_block_renderer(diagnostic, true),
                             disposition: BlockDisposition::Below,
                         }
                     }),
@@ -5257,7 +5233,7 @@ impl Editor {
 
     pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
         let language = self.language(cx);
-        let settings = self.settings.borrow();
+        let settings = cx.app_state::<Settings>();
         let mode = self
             .soft_wrap_mode_override
             .unwrap_or_else(|| settings.soft_wrap(language));
@@ -5799,18 +5775,14 @@ impl Deref for EditorStyle {
     }
 }
 
-pub fn diagnostic_block_renderer(
-    diagnostic: Diagnostic,
-    is_valid: bool,
-    settings: watch::Receiver<Settings>,
-) -> RenderBlock {
+pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
     let mut highlighted_lines = Vec::new();
     for line in diagnostic.message.lines() {
         highlighted_lines.push(highlight_diagnostic_message(line));
     }
 
     Arc::new(move |cx: &BlockContext| {
-        let settings = settings.borrow();
+        let settings = cx.app_state::<Settings>();
         let theme = &settings.theme.editor;
         let style = diagnostic_style(diagnostic.severity, is_valid, theme);
         let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
@@ -6005,14 +5977,12 @@ mod tests {
 
     #[gpui::test]
     fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
+        populate_settings(cx);
         let mut now = Instant::now();
         let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
         let group_interval = buffer.read(cx).transaction_group_interval();
         let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
-        let settings = Settings::test(cx);
-        let (_, editor) = cx.add_window(Default::default(), |cx| {
-            build_editor(buffer.clone(), settings, cx)
-        });
+        let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
 
         editor.update(cx, |editor, cx| {
             editor.start_transaction_at(now, cx);
@@ -6076,10 +6046,9 @@ mod tests {
 
     #[gpui::test]
     fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
-        let settings = Settings::test(cx);
-        let (_, editor) =
-            cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
 
         editor.update(cx, |view, cx| {
             view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
@@ -6143,9 +6112,9 @@ mod tests {
 
     #[gpui::test]
     fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
-        let settings = Settings::test(cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
 
         view.update(cx, |view, cx| {
             view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
@@ -6175,12 +6144,13 @@ mod tests {
 
     #[gpui::test]
     fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
+        use workspace::ItemView;
+        let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
+        let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
+
         cx.add_window(Default::default(), |cx| {
-            use workspace::ItemView;
-            let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
-            let settings = Settings::test(&cx);
-            let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
-            let mut editor = build_editor(buffer.clone(), settings, cx);
+            let mut editor = build_editor(buffer.clone(), cx);
             editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
 
             // Move the cursor a small distance.
@@ -6232,9 +6202,9 @@ mod tests {
 
     #[gpui::test]
     fn test_cancel(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
-        let settings = Settings::test(cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
 
         view.update(cx, |view, cx| {
             view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
@@ -6272,6 +6242,7 @@ mod tests {
 
     #[gpui::test]
     fn test_fold(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple(
             &"
                 impl Foo {
@@ -6293,10 +6264,7 @@ mod tests {
             .unindent(),
             cx,
         );
-        let settings = Settings::test(&cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| {
-            build_editor(buffer.clone(), settings, cx)
-        });
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
 
         view.update(cx, |view, cx| {
             view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
@@ -6359,11 +6327,9 @@ mod tests {
 
     #[gpui::test]
     fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
-        let settings = Settings::test(&cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| {
-            build_editor(buffer.clone(), settings, cx)
-        });
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
 
         buffer.update(cx, |buffer, cx| {
             buffer.edit(
@@ -6435,11 +6401,9 @@ mod tests {
 
     #[gpui::test]
     fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
-        let settings = Settings::test(&cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| {
-            build_editor(buffer.clone(), settings, cx)
-        });
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
 
         assert_eq!('ⓐ'.len_utf8(), 3);
         assert_eq!('α'.len_utf8(), 2);
@@ -6538,11 +6502,9 @@ mod tests {
 
     #[gpui::test]
     fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
-        let settings = Settings::test(&cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| {
-            build_editor(buffer.clone(), settings, cx)
-        });
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
         view.update(cx, |view, cx| {
             view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
             view.move_down(&MoveDown, cx);
@@ -6585,9 +6547,9 @@ mod tests {
 
     #[gpui::test]
     fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("abc\n  def", cx);
-        let settings = Settings::test(&cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
         view.update(cx, |view, cx| {
             view.select_display_ranges(
                 &[
@@ -6726,9 +6688,9 @@ mod tests {
 
     #[gpui::test]
     fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n  {baz.qux()}", cx);
-        let settings = Settings::test(&cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
         view.update(cx, |view, cx| {
             view.select_display_ranges(
                 &[
@@ -6864,9 +6826,9 @@ mod tests {
 
     #[gpui::test]
     fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("use one::{\n    two::three::four::five\n};", cx);
-        let settings = Settings::test(&cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
 
         view.update(cx, |view, cx| {
             view.set_wrap_width(Some(140.), cx);
@@ -6917,11 +6879,9 @@ mod tests {
 
     #[gpui::test]
     fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("one two three four", cx);
-        let settings = Settings::test(&cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| {
-            build_editor(buffer.clone(), settings, cx)
-        });
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
 
         view.update(cx, |view, cx| {
             view.select_display_ranges(
@@ -6956,11 +6916,9 @@ mod tests {
 
     #[gpui::test]
     fn test_newline(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("aaaa\n    bbbb\n", cx);
-        let settings = Settings::test(&cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| {
-            build_editor(buffer.clone(), settings, cx)
-        });
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
 
         view.update(cx, |view, cx| {
             view.select_display_ranges(
@@ -6979,6 +6937,7 @@ mod tests {
 
     #[gpui::test]
     fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple(
             "
                 a
@@ -6994,9 +6953,8 @@ mod tests {
             cx,
         );
 
-        let settings = Settings::test(&cx);
         let (_, editor) = cx.add_window(Default::default(), |cx| {
-            let mut editor = build_editor(buffer.clone(), settings, cx);
+            let mut editor = build_editor(buffer.clone(), cx);
             editor.select_ranges(
                 [
                     Point::new(2, 4)..Point::new(2, 5),
@@ -7064,11 +7022,10 @@ mod tests {
 
     #[gpui::test]
     fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
-
-        let settings = Settings::test(&cx);
         let (_, editor) = cx.add_window(Default::default(), |cx| {
-            let mut editor = build_editor(buffer.clone(), settings, cx);
+            let mut editor = build_editor(buffer.clone(), cx);
             editor.select_ranges([3..4, 11..12, 19..20], None, cx);
             editor
         });
@@ -7092,11 +7049,9 @@ mod tests {
 
     #[gpui::test]
     fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("  one two\nthree\n four", cx);
-        let settings = Settings::test(&cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| {
-            build_editor(buffer.clone(), settings, cx)
-        });
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
 
         view.update(cx, |view, cx| {
             // two selections on the same line
@@ -7168,9 +7123,9 @@ mod tests {
 
     #[gpui::test]
     fn test_backspace(cx: &mut gpui::MutableAppContext) {
-        let settings = Settings::test(&cx);
+        populate_settings(cx);
         let (_, view) = cx.add_window(Default::default(), |cx| {
-            build_editor(MultiBuffer::build_simple("", cx), settings, cx)
+            build_editor(MultiBuffer::build_simple("", cx), cx)
         });
 
         view.update(cx, |view, cx| {
@@ -7213,12 +7168,10 @@ mod tests {
 
     #[gpui::test]
     fn test_delete(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer =
             MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
-        let settings = Settings::test(&cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| {
-            build_editor(buffer.clone(), settings, cx)
-        });
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
 
         view.update(cx, |view, cx| {
             view.select_display_ranges(
@@ -7243,9 +7196,9 @@ mod tests {
 
     #[gpui::test]
     fn test_delete_line(cx: &mut gpui::MutableAppContext) {
-        let settings = Settings::test(&cx);
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
         view.update(cx, |view, cx| {
             view.select_display_ranges(
                 &[
@@ -7266,9 +7219,9 @@ mod tests {
             );
         });
 
-        let settings = Settings::test(&cx);
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
         view.update(cx, |view, cx| {
             view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
             view.delete_line(&DeleteLine, cx);
@@ -7282,9 +7235,9 @@ mod tests {
 
     #[gpui::test]
     fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
-        let settings = Settings::test(&cx);
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
         view.update(cx, |view, cx| {
             view.select_display_ranges(
                 &[
@@ -7308,9 +7261,8 @@ mod tests {
             );
         });
 
-        let settings = Settings::test(&cx);
         let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
         view.update(cx, |view, cx| {
             view.select_display_ranges(
                 &[
@@ -7333,9 +7285,9 @@ mod tests {
 
     #[gpui::test]
     fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
-        let settings = Settings::test(&cx);
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
         view.update(cx, |view, cx| {
             view.fold_ranges(
                 vec![
@@ -7429,11 +7381,10 @@ mod tests {
 
     #[gpui::test]
     fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
-        let settings = Settings::test(&cx);
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
         let snapshot = buffer.read(cx).snapshot(cx);
-        let (_, editor) =
-            cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
         editor.update(cx, |editor, cx| {
             editor.insert_blocks(
                 [BlockProperties {
@@ -7451,12 +7402,10 @@ mod tests {
 
     #[gpui::test]
     fn test_clipboard(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
-        let settings = Settings::test(&cx);
         let view = cx
-            .add_window(Default::default(), |cx| {
-                build_editor(buffer.clone(), settings, cx)
-            })
+            .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
             .1;
 
         // Cut with three selections. Clipboard text is divided into three slices.
@@ -7582,9 +7531,9 @@ mod tests {
 
     #[gpui::test]
     fn test_select_all(cx: &mut gpui::MutableAppContext) {
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
-        let settings = Settings::test(&cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
         view.update(cx, |view, cx| {
             view.select_all(&SelectAll, cx);
             assert_eq!(
@@ -7596,9 +7545,9 @@ mod tests {
 
     #[gpui::test]
     fn test_select_line(cx: &mut gpui::MutableAppContext) {
-        let settings = Settings::test(&cx);
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
         view.update(cx, |view, cx| {
             view.select_display_ranges(
                 &[
@@ -7641,9 +7590,9 @@ mod tests {
 
     #[gpui::test]
     fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
-        let settings = Settings::test(&cx);
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
         view.update(cx, |view, cx| {
             view.fold_ranges(
                 vec![
@@ -7707,9 +7656,9 @@ mod tests {
 
     #[gpui::test]
     fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
-        let settings = Settings::test(&cx);
+        populate_settings(cx);
         let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
-        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
 
         view.update(cx, |view, cx| {
             view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
@@ -7876,7 +7825,7 @@ mod tests {
 
     #[gpui::test]
     async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
-        let settings = cx.read(Settings::test);
+        cx.update(populate_settings);
         let language = Arc::new(Language::new(
             LanguageConfig::default(),
             Some(tree_sitter_rust::language()),
@@ -7893,7 +7842,7 @@ mod tests {
 
         let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
         let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
-        let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
         view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
             .await;
 
@@ -8017,7 +7966,7 @@ mod tests {
 
     #[gpui::test]
     async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
-        let settings = cx.read(Settings::test);
+        cx.update(populate_settings);
         let language = Arc::new(
             Language::new(
                 LanguageConfig {
@@ -8052,7 +8001,7 @@ mod tests {
 
         let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
         let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
-        let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
+        let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
         editor
             .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
             .await;
@@ -8074,7 +8023,7 @@ mod tests {
 
     #[gpui::test]
     async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
-        let settings = cx.read(Settings::test);
+        cx.update(populate_settings);
         let language = Arc::new(Language::new(
             LanguageConfig {
                 brackets: vec![
@@ -8106,7 +8055,7 @@ mod tests {
 
         let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
         let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
-        let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
         view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
             .await;
 
@@ -8217,7 +8166,7 @@ mod tests {
 
     #[gpui::test]
     async fn test_snippets(cx: &mut gpui::TestAppContext) {
-        let settings = cx.read(Settings::test);
+        cx.update(populate_settings);
 
         let text = "
             a. b
@@ -8226,7 +8175,7 @@ mod tests {
         "
         .unindent();
         let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
-        let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
+        let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
 
         editor.update(cx, |editor, cx| {
             let buffer = &editor.snapshot(cx).buffer_snapshot;
@@ -8324,7 +8273,7 @@ mod tests {
 
     #[gpui::test]
     async fn test_completion(cx: &mut gpui::TestAppContext) {
-        let settings = cx.read(Settings::test);
+        cx.update(populate_settings);
 
         let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
         language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
@@ -8372,7 +8321,7 @@ mod tests {
         let mut fake_server = fake_servers.next().await.unwrap();
 
         let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
-        let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
+        let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
 
         editor.update(cx, |editor, cx| {
             editor.project = Some(project);
@@ -8558,7 +8507,7 @@ mod tests {
 
     #[gpui::test]
     async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
-        let settings = cx.read(Settings::test);
+        cx.update(populate_settings);
         let language = Arc::new(Language::new(
             LanguageConfig {
                 line_comment: Some("// ".to_string()),
@@ -8578,7 +8527,7 @@ mod tests {
 
         let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
         let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
-        let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
 
         view.update(cx, |editor, cx| {
             // If multiple selections intersect a line, the line is only
@@ -8638,7 +8587,7 @@ mod tests {
 
     #[gpui::test]
     fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
-        let settings = Settings::test(cx);
+        populate_settings(cx);
         let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
         let multibuffer = cx.add_model(|cx| {
             let mut multibuffer = MultiBuffer::new(0);
@@ -8655,9 +8604,7 @@ mod tests {
 
         assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
 
-        let (_, view) = cx.add_window(Default::default(), |cx| {
-            build_editor(multibuffer, settings, cx)
-        });
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
         view.update(cx, |view, cx| {
             assert_eq!(view.text(cx), "aaaa\nbbbb");
             view.select_ranges(
@@ -8683,7 +8630,7 @@ mod tests {
 
     #[gpui::test]
     fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
-        let settings = Settings::test(cx);
+        populate_settings(cx);
         let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
         let multibuffer = cx.add_model(|cx| {
             let mut multibuffer = MultiBuffer::new(0);
@@ -8703,9 +8650,7 @@ mod tests {
             "aaaa\nbbbb\nbbbb\ncccc"
         );
 
-        let (_, view) = cx.add_window(Default::default(), |cx| {
-            build_editor(multibuffer, settings, cx)
-        });
+        let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
         view.update(cx, |view, cx| {
             view.select_ranges(
                 [
@@ -8740,7 +8685,7 @@ mod tests {
 
     #[gpui::test]
     fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
-        let settings = Settings::test(cx);
+        populate_settings(cx);
         let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
         let mut excerpt1_id = None;
         let multibuffer = cx.add_model(|cx| {
@@ -8763,7 +8708,7 @@ mod tests {
             "aaaa\nbbbb\nbbbb\ncccc"
         );
         let (_, editor) = cx.add_window(Default::default(), |cx| {
-            let mut editor = build_editor(multibuffer.clone(), settings, cx);
+            let mut editor = build_editor(multibuffer.clone(), cx);
             editor.select_ranges(
                 [
                     Point::new(1, 3)..Point::new(1, 3),
@@ -8815,7 +8760,7 @@ mod tests {
 
     #[gpui::test]
     async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
-        let settings = cx.read(Settings::test);
+        cx.update(populate_settings);
         let language = Arc::new(Language::new(
             LanguageConfig {
                 brackets: vec![
@@ -8847,7 +8792,7 @@ mod tests {
 
         let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
         let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
-        let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
+        let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
         view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
             .await;
 
@@ -8883,10 +8828,8 @@ mod tests {
     #[gpui::test]
     fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
         let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
-        let settings = Settings::test(&cx);
-        let (_, editor) = cx.add_window(Default::default(), |cx| {
-            build_editor(buffer.clone(), settings, cx)
-        });
+        populate_settings(cx);
+        let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
 
         editor.update(cx, |editor, cx| {
             struct Type1;
@@ -9036,13 +8979,13 @@ mod tests {
         point..point
     }
 
-    fn build_editor(
-        buffer: ModelHandle<MultiBuffer>,
-        settings: Settings,
-        cx: &mut ViewContext<Editor>,
-    ) -> Editor {
-        let settings = watch::channel_with(settings);
-        Editor::new(EditorMode::Full, buffer, None, settings.1, None, cx)
+    fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
+        Editor::new(EditorMode::Full, buffer, None, None, cx)
+    }
+
+    fn populate_settings(cx: &mut gpui::MutableAppContext) {
+        let settings = Settings::test(cx);
+        cx.add_app_state(settings);
     }
 }
 
diff --git a/crates/editor/src/element.rs b/crates/editor/src/element.rs
index dcf716e0bb91b6fc55aba4bf4cc7db55ac81a031..9ea0b4bcda011f9879d434f4790d95bc9e471d07 100644
--- a/crates/editor/src/element.rs
+++ b/crates/editor/src/element.rs
@@ -1378,16 +1378,15 @@ fn scale_horizontal_mouse_autoscroll_delta(delta: f32) -> f32 {
 mod tests {
     use super::*;
     use crate::{Editor, MultiBuffer};
-    use postage::watch;
     use util::test::sample_text;
     use workspace::Settings;
 
     #[gpui::test]
     fn test_layout_line_numbers(cx: &mut gpui::MutableAppContext) {
-        let settings = watch::channel_with(Settings::test(cx));
+        cx.add_app_state(Settings::test(cx));
         let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
         let (window_id, editor) = cx.add_window(Default::default(), |cx| {
-            Editor::new(EditorMode::Full, buffer, None, settings.1, None, cx)
+            Editor::new(EditorMode::Full, buffer, None, None, cx)
         });
         let element = EditorElement::new(editor.downgrade(), editor.read(cx).style(cx));
 
diff --git a/crates/editor/src/items.rs b/crates/editor/src/items.rs
index 4e25a5a24b0dc3503056c60734319216d7d50970..647684fa4a1d46db7ca8008d8140b6f4e4902c75 100644
--- a/crates/editor/src/items.rs
+++ b/crates/editor/src/items.rs
@@ -5,7 +5,6 @@ use gpui::{
     Subscription, Task, View, ViewContext, ViewHandle, WeakModelHandle,
 };
 use language::{Bias, Buffer, Diagnostic, File as _};
-use postage::watch;
 use project::{File, Project, ProjectPath};
 use std::path::PathBuf;
 use std::rc::Rc;
@@ -57,12 +56,7 @@ impl ItemHandle for BufferItemHandle {
     ) -> Box<dyn ItemViewHandle> {
         let buffer = cx.add_model(|cx| MultiBuffer::singleton(self.0.clone(), cx));
         Box::new(cx.add_view(window_id, |cx| {
-            let mut editor = Editor::for_buffer(
-                buffer,
-                Some(workspace.project().clone()),
-                workspace.settings(),
-                cx,
-            );
+            let mut editor = Editor::for_buffer(buffer, Some(workspace.project().clone()), cx);
             editor.nav_history = Some(ItemNavHistory::new(nav_history, &cx.handle()));
             editor
         }))
@@ -101,12 +95,8 @@ impl ItemHandle for MultiBufferItemHandle {
         cx: &mut MutableAppContext,
     ) -> Box<dyn ItemViewHandle> {
         Box::new(cx.add_view(window_id, |cx| {
-            let mut editor = Editor::for_buffer(
-                self.0.clone(),
-                Some(workspace.project().clone()),
-                workspace.settings(),
-                cx,
-            );
+            let mut editor =
+                Editor::for_buffer(self.0.clone(), Some(workspace.project().clone()), cx);
             editor.nav_history = Some(ItemNavHistory::new(nav_history, &cx.handle()));
             editor
         }))
@@ -288,16 +278,14 @@ impl ItemView for Editor {
 pub struct CursorPosition {
     position: Option<Point>,
     selected_count: usize,
-    settings: watch::Receiver<Settings>,
     _observe_active_editor: Option<Subscription>,
 }
 
 impl CursorPosition {
-    pub fn new(settings: watch::Receiver<Settings>) -> Self {
+    pub fn new() -> Self {
         Self {
             position: None,
             selected_count: 0,
-            settings,
             _observe_active_editor: None,
         }
     }
@@ -332,9 +320,9 @@ impl View for CursorPosition {
         "CursorPosition"
     }
 
-    fn render(&mut self, _: &mut RenderContext<Self>) -> ElementBox {
+    fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
         if let Some(position) = self.position {
-            let theme = &self.settings.borrow().theme.workspace.status_bar;
+            let theme = &cx.app_state::<Settings>().theme.workspace.status_bar;
             let mut text = format!("{},{}", position.row + 1, position.column + 1);
             if self.selected_count > 0 {
                 write!(text, " ({} selected)", self.selected_count).unwrap();
@@ -365,16 +353,14 @@ impl StatusItemView for CursorPosition {
 }
 
 pub struct DiagnosticMessage {
-    settings: watch::Receiver<Settings>,
     diagnostic: Option<Diagnostic>,
     _observe_active_editor: Option<Subscription>,
 }
 
 impl DiagnosticMessage {
-    pub fn new(settings: watch::Receiver<Settings>) -> Self {
+    pub fn new() -> Self {
         Self {
             diagnostic: None,
-            settings,
             _observe_active_editor: None,
         }
     }
@@ -407,9 +393,9 @@ impl View for DiagnosticMessage {
         "DiagnosticMessage"
     }
 
-    fn render(&mut self, _: &mut RenderContext<Self>) -> ElementBox {
+    fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
         if let Some(diagnostic) = &self.diagnostic {
-            let theme = &self.settings.borrow().theme.workspace.status_bar;
+            let theme = &cx.app_state::<Settings>().theme.workspace.status_bar;
             Label::new(
                 diagnostic.message.split('\n').next().unwrap().to_string(),
                 theme.diagnostic_message.clone(),
diff --git a/crates/file_finder/src/file_finder.rs b/crates/file_finder/src/file_finder.rs
index 9e1a6d479c46e705ee5ed36c8689a80fe3f1f4cb..4340cd5a1b7bb30bf05e40c5e0bf6ab1de88a6b5 100644
--- a/crates/file_finder/src/file_finder.rs
+++ b/crates/file_finder/src/file_finder.rs
@@ -7,7 +7,6 @@ use gpui::{
     AppContext, Axis, Entity, ModelHandle, MutableAppContext, RenderContext, Task, View,
     ViewContext, ViewHandle, WeakViewHandle,
 };
-use postage::watch;
 use project::{Project, ProjectPath, WorktreeId};
 use std::{
     cmp,
@@ -25,7 +24,6 @@ use workspace::{
 
 pub struct FileFinder {
     handle: WeakViewHandle<Self>,
-    settings: watch::Receiver<Settings>,
     project: ModelHandle<Project>,
     query_editor: ViewHandle<Editor>,
     search_count: usize,
@@ -68,9 +66,8 @@ impl View for FileFinder {
         "FileFinder"
     }
 
-    fn render(&mut self, _: &mut RenderContext<Self>) -> ElementBox {
-        let settings = self.settings.borrow();
-
+    fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
+        let settings = cx.app_state::<Settings>();
         Align::new(
             ConstrainedBox::new(
                 Container::new(
@@ -81,7 +78,7 @@ impl View for FileFinder {
                                 .with_style(settings.theme.selector.input_editor.container)
                                 .boxed(),
                         )
-                        .with_child(Flexible::new(1.0, false, self.render_matches()).boxed())
+                        .with_child(Flexible::new(1.0, false, self.render_matches(cx)).boxed())
                         .boxed(),
                 )
                 .with_style(settings.theme.selector.container)
@@ -107,9 +104,9 @@ impl View for FileFinder {
 }
 
 impl FileFinder {
-    fn render_matches(&self) -> ElementBox {
+    fn render_matches(&self, cx: &AppContext) -> ElementBox {
         if self.matches.is_empty() {
-            let settings = self.settings.borrow();
+            let settings = cx.app_state::<Settings>();
             return Container::new(
                 Label::new(
                     "No matches".into(),
@@ -122,32 +119,30 @@ impl FileFinder {
         }
 
         let handle = self.handle.clone();
-        let list = UniformList::new(
-            self.list_state.clone(),
-            self.matches.len(),
-            move |mut range, items, cx| {
-                let cx = cx.as_ref();
-                let finder = handle.upgrade(cx).unwrap();
-                let finder = finder.read(cx);
-                let start = range.start;
-                range.end = cmp::min(range.end, finder.matches.len());
-                items.extend(
-                    finder.matches[range]
-                        .iter()
-                        .enumerate()
-                        .map(move |(i, path_match)| finder.render_match(path_match, start + i)),
-                );
-            },
-        );
+        let list =
+            UniformList::new(
+                self.list_state.clone(),
+                self.matches.len(),
+                move |mut range, items, cx| {
+                    let cx = cx.as_ref();
+                    let finder = handle.upgrade(cx).unwrap();
+                    let finder = finder.read(cx);
+                    let start = range.start;
+                    range.end = cmp::min(range.end, finder.matches.len());
+                    items.extend(finder.matches[range].iter().enumerate().map(
+                        move |(i, path_match)| finder.render_match(path_match, start + i, cx),
+                    ));
+                },
+            );
 
         Container::new(list.boxed())
             .with_margin_top(6.0)
             .named("matches")
     }
 
-    fn render_match(&self, path_match: &PathMatch, index: usize) -> ElementBox {
+    fn render_match(&self, path_match: &PathMatch, index: usize, cx: &AppContext) -> ElementBox {
         let selected_index = self.selected_index();
-        let settings = self.settings.borrow();
+        let settings = cx.app_state::<Settings>();
         let style = if index == selected_index {
             &settings.theme.selector.active_item
         } else {
@@ -233,7 +228,7 @@ impl FileFinder {
     fn toggle(workspace: &mut Workspace, _: &Toggle, cx: &mut ViewContext<Workspace>) {
         workspace.toggle_modal(cx, |cx, workspace| {
             let project = workspace.project().clone();
-            let finder = cx.add_view(|cx| Self::new(workspace.settings.clone(), project, cx));
+            let finder = cx.add_view(|cx| Self::new(project, cx));
             cx.subscribe(&finder, Self::on_event).detach();
             finder
         });
@@ -258,26 +253,17 @@ impl FileFinder {
         }
     }
 
-    pub fn new(
-        settings: watch::Receiver<Settings>,
-        project: ModelHandle<Project>,
-        cx: &mut ViewContext<Self>,
-    ) -> Self {
+    pub fn new(project: ModelHandle<Project>, cx: &mut ViewContext<Self>) -> Self {
         cx.observe(&project, Self::project_updated).detach();
 
         let query_editor = cx.add_view(|cx| {
-            Editor::single_line(
-                settings.clone(),
-                Some(|theme| theme.selector.input_editor.clone()),
-                cx,
-            )
+            Editor::single_line(Some(|theme| theme.selector.input_editor.clone()), cx)
         });
         cx.subscribe(&query_editor, Self::on_query_editor_event)
             .detach();
 
         Self {
             handle: cx.weak_handle(),
-            settings,
             project,
             query_editor,
             search_count: 0,
@@ -524,13 +510,8 @@ mod tests {
             .unwrap();
         cx.read(|cx| workspace.read(cx).worktree_scans_complete(cx))
             .await;
-        let (_, finder) = cx.add_window(|cx| {
-            FileFinder::new(
-                params.settings.clone(),
-                workspace.read(cx).project().clone(),
-                cx,
-            )
-        });
+        let (_, finder) =
+            cx.add_window(|cx| FileFinder::new(workspace.read(cx).project().clone(), cx));
 
         let query = "hi".to_string();
         finder
@@ -590,13 +571,8 @@ mod tests {
             .unwrap();
         cx.read(|cx| workspace.read(cx).worktree_scans_complete(cx))
             .await;
-        let (_, finder) = cx.add_window(|cx| {
-            FileFinder::new(
-                params.settings.clone(),
-                workspace.read(cx).project().clone(),
-                cx,
-            )
-        });
+        let (_, finder) =
+            cx.add_window(|cx| FileFinder::new(workspace.read(cx).project().clone(), cx));
 
         // Even though there is only one worktree, that worktree's filename
         // is included in the matching, because the worktree is a single file.
@@ -653,13 +629,8 @@ mod tests {
         cx.read(|cx| workspace.read(cx).worktree_scans_complete(cx))
             .await;
 
-        let (_, finder) = cx.add_window(|cx| {
-            FileFinder::new(
-                params.settings.clone(),
-                workspace.read(cx).project().clone(),
-                cx,
-            )
-        });
+        let (_, finder) =
+            cx.add_window(|cx| FileFinder::new(workspace.read(cx).project().clone(), cx));
 
         // Run a search that matches two files with the same relative path.
         finder
diff --git a/crates/go_to_line/src/go_to_line.rs b/crates/go_to_line/src/go_to_line.rs
index c3e9cdcbf257cc12aba8302d3865587bbdd167e6..5d416c0e56179c6fc7eae6be16343d6a967e2894 100644
--- a/crates/go_to_line/src/go_to_line.rs
+++ b/crates/go_to_line/src/go_to_line.rs
@@ -3,7 +3,6 @@ use gpui::{
     action, elements::*, geometry::vector::Vector2F, keymap::Binding, Axis, Entity,
     MutableAppContext, RenderContext, View, ViewContext, ViewHandle,
 };
-use postage::watch;
 use text::{Bias, Point};
 use workspace::{Settings, Workspace};
 
@@ -21,7 +20,6 @@ pub fn init(cx: &mut MutableAppContext) {
 }
 
 pub struct GoToLine {
-    settings: watch::Receiver<Settings>,
     line_editor: ViewHandle<Editor>,
     active_editor: ViewHandle<Editor>,
     prev_scroll_position: Option<Vector2F>,
@@ -34,17 +32,9 @@ pub enum Event {
 }
 
 impl GoToLine {
-    pub fn new(
-        active_editor: ViewHandle<Editor>,
-        settings: watch::Receiver<Settings>,
-        cx: &mut ViewContext<Self>,
-    ) -> Self {
+    pub fn new(active_editor: ViewHandle<Editor>, cx: &mut ViewContext<Self>) -> Self {
         let line_editor = cx.add_view(|cx| {
-            Editor::single_line(
-                settings.clone(),
-                Some(|theme| theme.selector.input_editor.clone()),
-                cx,
-            )
+            Editor::single_line(Some(|theme| theme.selector.input_editor.clone()), cx)
         });
         cx.subscribe(&line_editor, Self::on_line_editor_event)
             .detach();
@@ -60,7 +50,6 @@ impl GoToLine {
         });
 
         Self {
-            settings: settings.clone(),
             line_editor,
             active_editor,
             prev_scroll_position: scroll_position,
@@ -71,8 +60,8 @@ impl GoToLine {
 
     fn toggle(workspace: &mut Workspace, _: &Toggle, cx: &mut ViewContext<Workspace>) {
         if let Some(editor) = workspace.active_item(cx).unwrap().downcast::<Editor>() {
-            workspace.toggle_modal(cx, |cx, workspace| {
-                let view = cx.add_view(|cx| GoToLine::new(editor, workspace.settings.clone(), cx));
+            workspace.toggle_modal(cx, |cx, _| {
+                let view = cx.add_view(|cx| GoToLine::new(editor, cx));
                 cx.subscribe(&view, Self::on_event).detach();
                 view
             });
@@ -156,8 +145,8 @@ impl View for GoToLine {
         "GoToLine"
     }
 
-    fn render(&mut self, _: &mut RenderContext<Self>) -> ElementBox {
-        let theme = &self.settings.borrow().theme.selector;
+    fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
+        let theme = &cx.app_state::<Settings>().theme.selector;
 
         let label = format!(
             "{},{} of {} lines",
diff --git a/crates/outline/src/outline.rs b/crates/outline/src/outline.rs
index dc8ba002a38e9490e2e8980a42a24883277b92d3..89c3e41cbba1f781d7bf8af07183ff963ca3d342 100644
--- a/crates/outline/src/outline.rs
+++ b/crates/outline/src/outline.rs
@@ -13,7 +13,6 @@ use gpui::{
 };
 use language::Outline;
 use ordered_float::OrderedFloat;
-use postage::watch;
 use std::cmp::{self, Reverse};
 use workspace::{
     menu::{Confirm, SelectFirst, SelectLast, SelectNext, SelectPrev},
@@ -44,7 +43,6 @@ struct OutlineView {
     matches: Vec<StringMatch>,
     query_editor: ViewHandle<Editor>,
     list_state: UniformListState,
-    settings: watch::Receiver<Settings>,
 }
 
 pub enum Event {
@@ -70,8 +68,8 @@ impl View for OutlineView {
         cx
     }
 
-    fn render(&mut self, _: &mut RenderContext<Self>) -> ElementBox {
-        let settings = self.settings.borrow();
+    fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
+        let settings = cx.app_state::<Settings>();
 
         Flex::new(Axis::Vertical)
             .with_child(
@@ -79,7 +77,7 @@ impl View for OutlineView {
                     .with_style(settings.theme.selector.input_editor.container)
                     .boxed(),
             )
-            .with_child(Flexible::new(1.0, false, self.render_matches()).boxed())
+            .with_child(Flexible::new(1.0, false, self.render_matches(cx)).boxed())
             .contained()
             .with_style(settings.theme.selector.container)
             .constrained()
@@ -99,15 +97,10 @@ impl OutlineView {
     fn new(
         outline: Outline<Anchor>,
         editor: ViewHandle<Editor>,
-        settings: watch::Receiver<Settings>,
         cx: &mut ViewContext<Self>,
     ) -> Self {
         let query_editor = cx.add_view(|cx| {
-            Editor::single_line(
-                settings.clone(),
-                Some(|theme| theme.selector.input_editor.clone()),
-                cx,
-            )
+            Editor::single_line(Some(|theme| theme.selector.input_editor.clone()), cx)
         });
         cx.subscribe(&query_editor, Self::on_query_editor_event)
             .detach();
@@ -121,7 +114,6 @@ impl OutlineView {
             outline,
             query_editor,
             list_state: Default::default(),
-            settings,
         };
         this.update_matches(cx);
         this
@@ -132,16 +124,12 @@ impl OutlineView {
             .active_item(cx)
             .and_then(|item| item.downcast::<Editor>())
         {
-            let settings = workspace.settings();
-            let buffer = editor
-                .read(cx)
-                .buffer()
-                .read(cx)
-                .read(cx)
-                .outline(Some(settings.borrow().theme.editor.syntax.as_ref()));
+            let buffer = editor.read(cx).buffer().read(cx).read(cx).outline(Some(
+                cx.app_state::<Settings>().theme.editor.syntax.as_ref(),
+            ));
             if let Some(outline) = buffer {
                 workspace.toggle_modal(cx, |cx, _| {
-                    let view = cx.add_view(|cx| OutlineView::new(outline, editor, settings, cx));
+                    let view = cx.add_view(|cx| OutlineView::new(outline, editor, cx));
                     cx.subscribe(&view, Self::on_event).detach();
                     view
                 });
@@ -298,9 +286,9 @@ impl OutlineView {
         self.select(selected_index, navigate_to_selected_index, true, cx);
     }
 
-    fn render_matches(&self) -> ElementBox {
+    fn render_matches(&self, cx: &AppContext) -> ElementBox {
         if self.matches.is_empty() {
-            let settings = self.settings.borrow();
+            let settings = cx.app_state::<Settings>();
             return Container::new(
                 Label::new(
                     "No matches".into(),
@@ -326,7 +314,7 @@ impl OutlineView {
                     view.matches[range]
                         .iter()
                         .enumerate()
-                        .map(move |(ix, m)| view.render_match(m, start + ix)),
+                        .map(move |(ix, m)| view.render_match(m, start + ix, cx)),
                 );
             },
         );
@@ -336,8 +324,13 @@ impl OutlineView {
             .named("matches")
     }
 
-    fn render_match(&self, string_match: &StringMatch, index: usize) -> ElementBox {
-        let settings = self.settings.borrow();
+    fn render_match(
+        &self,
+        string_match: &StringMatch,
+        index: usize,
+        cx: &AppContext,
+    ) -> ElementBox {
+        let settings = cx.app_state::<Settings>();
         let style = if index == self.selected_match_index {
             &settings.theme.selector.active_item
         } else {
diff --git a/crates/project_panel/src/project_panel.rs b/crates/project_panel/src/project_panel.rs
index 76d320b89489c1890c5dc9b4f5c49d31818ff427..7f03005b80cc2d8eddab64f0c59a509cf2d6f12b 100644
--- a/crates/project_panel/src/project_panel.rs
+++ b/crates/project_panel/src/project_panel.rs
@@ -9,7 +9,6 @@ use gpui::{
     AppContext, Element, ElementBox, Entity, ModelHandle, MutableAppContext, View, ViewContext,
     ViewHandle, WeakViewHandle,
 };
-use postage::watch;
 use project::{Project, ProjectEntry, ProjectPath, Worktree, WorktreeId};
 use std::{
     collections::{hash_map, HashMap},
@@ -27,7 +26,6 @@ pub struct ProjectPanel {
     visible_entries: Vec<(WorktreeId, Vec<usize>)>,
     expanded_dir_ids: HashMap<WorktreeId, Vec<usize>>,
     selection: Option<Selection>,
-    settings: watch::Receiver<Settings>,
     handle: WeakViewHandle<Self>,
 }
 
@@ -73,11 +71,7 @@ pub enum Event {
 }
 
 impl ProjectPanel {
-    pub fn new(
-        project: ModelHandle<Project>,
-        settings: watch::Receiver<Settings>,
-        cx: &mut ViewContext<Workspace>,
-    ) -> ViewHandle<Self> {
+    pub fn new(project: ModelHandle<Project>, cx: &mut ViewContext<Workspace>) -> ViewHandle<Self> {
         let project_panel = cx.add_view(|cx: &mut ViewContext<Self>| {
             cx.observe(&project, |this, _, cx| {
                 this.update_visible_entries(None, cx);
@@ -105,7 +99,6 @@ impl ProjectPanel {
 
             let mut this = Self {
                 project: project.clone(),
-                settings,
                 list: Default::default(),
                 visible_entries: Default::default(),
                 expanded_dir_ids: Default::default(),
@@ -541,9 +534,9 @@ impl View for ProjectPanel {
         "ProjectPanel"
     }
 
-    fn render(&mut self, _: &mut gpui::RenderContext<'_, Self>) -> gpui::ElementBox {
-        let settings = self.settings.clone();
-        let mut container_style = settings.borrow().theme.project_panel.container;
+    fn render(&mut self, cx: &mut gpui::RenderContext<'_, Self>) -> gpui::ElementBox {
+        let theme = &cx.app_state::<Settings>().theme.project_panel;
+        let mut container_style = theme.container;
         let padding = std::mem::take(&mut container_style.padding);
         let handle = self.handle.clone();
         UniformList::new(
@@ -553,11 +546,11 @@ impl View for ProjectPanel {
                 .map(|(_, worktree_entries)| worktree_entries.len())
                 .sum(),
             move |range, items, cx| {
-                let theme = &settings.borrow().theme.project_panel;
+                let theme = cx.app_state::<Settings>().theme.clone();
                 let this = handle.upgrade(cx).unwrap();
                 this.update(cx.app, |this, cx| {
                     this.for_each_visible_entry(range.clone(), cx, |entry, details, cx| {
-                        items.push(Self::render_entry(entry, details, theme, cx));
+                        items.push(Self::render_entry(entry, details, &theme.project_panel, cx));
                     });
                 })
             },
@@ -593,7 +586,6 @@ mod tests {
         cx.foreground().forbid_parking();
 
         let params = cx.update(WorkspaceParams::test);
-        let settings = params.settings.clone();
         let fs = params.fs.as_fake();
         fs.insert_tree(
             "/root1",
@@ -660,7 +652,7 @@ mod tests {
             .await;
 
         let (_, workspace) = cx.add_window(|cx| Workspace::new(&params, cx));
-        let panel = workspace.update(cx, |_, cx| ProjectPanel::new(project, settings, cx));
+        let panel = workspace.update(cx, |_, cx| ProjectPanel::new(project, cx));
         assert_eq!(
             visible_entry_details(&panel, 0..50, cx),
             &[
diff --git a/crates/project_symbols/src/project_symbols.rs b/crates/project_symbols/src/project_symbols.rs
index 6de48143352109eab7366d8f07fbeb349d1e621e..dd253d886e3651610b4d44fd544e01d498690525 100644
--- a/crates/project_symbols/src/project_symbols.rs
+++ b/crates/project_symbols/src/project_symbols.rs
@@ -11,7 +11,6 @@ use gpui::{
     ViewContext, ViewHandle, WeakViewHandle,
 };
 use ordered_float::OrderedFloat;
-use postage::watch;
 use project::{Project, Symbol};
 use std::{
     borrow::Cow,
@@ -41,7 +40,6 @@ pub fn init(cx: &mut MutableAppContext) {
 pub struct ProjectSymbolsView {
     handle: WeakViewHandle<Self>,
     project: ModelHandle<Project>,
-    settings: watch::Receiver<Settings>,
     selected_match_index: usize,
     list_state: UniformListState,
     symbols: Vec<Symbol>,
@@ -71,16 +69,15 @@ impl View for ProjectSymbolsView {
         cx
     }
 
-    fn render(&mut self, _: &mut RenderContext<Self>) -> ElementBox {
-        let settings = self.settings.borrow();
-
+    fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
+        let settings = cx.app_state::<Settings>();
         Flex::new(Axis::Vertical)
             .with_child(
                 Container::new(ChildView::new(&self.query_editor).boxed())
                     .with_style(settings.theme.selector.input_editor.container)
                     .boxed(),
             )
-            .with_child(Flexible::new(1.0, false, self.render_matches()).boxed())
+            .with_child(Flexible::new(1.0, false, self.render_matches(cx)).boxed())
             .contained()
             .with_style(settings.theme.selector.container)
             .constrained()
@@ -97,24 +94,15 @@ impl View for ProjectSymbolsView {
 }
 
 impl ProjectSymbolsView {
-    fn new(
-        project: ModelHandle<Project>,
-        settings: watch::Receiver<Settings>,
-        cx: &mut ViewContext<Self>,
-    ) -> Self {
+    fn new(project: ModelHandle<Project>, cx: &mut ViewContext<Self>) -> Self {
         let query_editor = cx.add_view(|cx| {
-            Editor::single_line(
-                settings.clone(),
-                Some(|theme| theme.selector.input_editor.clone()),
-                cx,
-            )
+            Editor::single_line(Some(|theme| theme.selector.input_editor.clone()), cx)
         });
         cx.subscribe(&query_editor, Self::on_query_editor_event)
             .detach();
         let mut this = Self {
             handle: cx.weak_handle(),
             project,
-            settings,
             selected_match_index: 0,
             list_state: Default::default(),
             symbols: Default::default(),
@@ -130,7 +118,7 @@ impl ProjectSymbolsView {
     fn toggle(workspace: &mut Workspace, _: &Toggle, cx: &mut ViewContext<Workspace>) {
         workspace.toggle_modal(cx, |cx, workspace| {
             let project = workspace.project().clone();
-            let symbols = cx.add_view(|cx| Self::new(project, workspace.settings.clone(), cx));
+            let symbols = cx.add_view(|cx| Self::new(project, cx));
             cx.subscribe(&symbols, Self::on_event).detach();
             symbols
         });
@@ -244,9 +232,9 @@ impl ProjectSymbolsView {
         cx.notify();
     }
 
-    fn render_matches(&self) -> ElementBox {
+    fn render_matches(&self, cx: &AppContext) -> ElementBox {
         if self.matches.is_empty() {
-            let settings = self.settings.borrow();
+            let settings = cx.app_state::<Settings>();
             return Container::new(
                 Label::new(
                     "No matches".into(),
@@ -289,7 +277,7 @@ impl ProjectSymbolsView {
         show_worktree_root_name: bool,
         cx: &AppContext,
     ) -> ElementBox {
-        let settings = self.settings.borrow();
+        let settings = cx.app_state::<Settings>();
         let style = if index == self.selected_match_index {
             &settings.theme.selector.active_item
         } else {
diff --git a/crates/search/src/buffer_search.rs b/crates/search/src/buffer_search.rs
index a5184ea5f30d4221ab5a2524e5ee439f31da590f..b3269023c83cdbfe5b4c9e29332a46f82a099877 100644
--- a/crates/search/src/buffer_search.rs
+++ b/crates/search/src/buffer_search.rs
@@ -6,7 +6,6 @@ use gpui::{
     RenderContext, Subscription, Task, View, ViewContext, ViewHandle, WeakViewHandle,
 };
 use language::OffsetRangeExt;
-use postage::watch;
 use project::search::SearchQuery;
 use std::ops::Range;
 use workspace::{ItemViewHandle, Pane, Settings, Toolbar, Workspace};
@@ -40,7 +39,6 @@ pub fn init(cx: &mut MutableAppContext) {
 }
 
 struct SearchBar {
-    settings: watch::Receiver<Settings>,
     query_editor: ViewHandle<Editor>,
     active_editor: Option<ViewHandle<Editor>>,
     active_match_index: Option<usize>,
@@ -68,7 +66,7 @@ impl View for SearchBar {
     }
 
     fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
-        let theme = &self.settings.borrow().theme;
+        let theme = cx.app_state::<Settings>().theme.clone();
         let editor_container = if self.query_contains_error {
             theme.search.invalid_editor
         } else {
@@ -158,14 +156,9 @@ impl Toolbar for SearchBar {
 }
 
 impl SearchBar {
-    fn new(settings: watch::Receiver<Settings>, cx: &mut ViewContext<Self>) -> Self {
+    fn new(cx: &mut ViewContext<Self>) -> Self {
         let query_editor = cx.add_view(|cx| {
-            Editor::auto_height(
-                2,
-                settings.clone(),
-                Some(|theme| theme.search.editor.input.clone()),
-                cx,
-            )
+            Editor::auto_height(2, Some(|theme| theme.search.editor.input.clone()), cx)
         });
         cx.subscribe(&query_editor, Self::on_query_editor_event)
             .detach();
@@ -179,7 +172,6 @@ impl SearchBar {
             case_sensitive: false,
             whole_word: false,
             regex: false,
-            settings,
             pending_search: None,
             query_contains_error: false,
             dismissed: false,
@@ -201,9 +193,9 @@ impl SearchBar {
         search_option: SearchOption,
         cx: &mut RenderContext<Self>,
     ) -> ElementBox {
-        let theme = &self.settings.borrow().theme.search;
         let is_active = self.is_search_option_enabled(search_option);
-        MouseEventHandler::new::<Self, _, _>(search_option as usize, cx, |state, _| {
+        MouseEventHandler::new::<Self, _, _>(search_option as usize, cx, |state, cx| {
+            let theme = &cx.app_state::<Settings>().theme.search;
             let style = match (is_active, state.hovered) {
                 (false, false) => &theme.option_button,
                 (false, true) => &theme.hovered_option_button,
@@ -226,9 +218,9 @@ impl SearchBar {
         direction: Direction,
         cx: &mut RenderContext<Self>,
     ) -> ElementBox {
-        let theme = &self.settings.borrow().theme.search;
         enum NavButton {}
-        MouseEventHandler::new::<NavButton, _, _>(direction as usize, cx, |state, _| {
+        MouseEventHandler::new::<NavButton, _, _>(direction as usize, cx, |state, cx| {
+            let theme = &cx.app_state::<Settings>().theme.search;
             let style = if state.hovered {
                 &theme.hovered_option_button
             } else {
@@ -245,9 +237,8 @@ impl SearchBar {
     }
 
     fn deploy(workspace: &mut Workspace, Deploy(focus): &Deploy, cx: &mut ViewContext<Workspace>) {
-        let settings = workspace.settings();
         workspace.active_pane().update(cx, |pane, cx| {
-            pane.show_toolbar(cx, |cx| SearchBar::new(settings, cx));
+            pane.show_toolbar(cx, |cx| SearchBar::new(cx));
 
             if let Some(search_bar) = pane
                 .active_toolbar()
@@ -468,8 +459,6 @@ impl SearchBar {
                             this.update_match_index(cx);
                             if !this.dismissed {
                                 editor.update(cx, |editor, cx| {
-                                    let theme = &this.settings.borrow().theme.search;
-
                                     if select_closest_match {
                                         if let Some(match_ix) = this.active_match_index {
                                             editor.select_ranges(
@@ -480,6 +469,7 @@ impl SearchBar {
                                         }
                                     }
 
+                                    let theme = &cx.app_state::<Settings>().theme.search;
                                     editor.highlight_ranges::<Self>(
                                         ranges,
                                         theme.match_background,
@@ -525,7 +515,7 @@ mod tests {
         let mut theme = gpui::fonts::with_font_cache(fonts.clone(), || theme::Theme::default());
         theme.search.match_background = Color::red();
         let settings = Settings::new("Courier", &fonts, Arc::new(theme)).unwrap();
-        let settings = watch::channel_with(settings).1;
+        cx.update(|cx| cx.add_app_state(settings));
 
         let buffer = cx.update(|cx| {
             MultiBuffer::build_simple(
@@ -540,11 +530,11 @@ mod tests {
             )
         });
         let editor = cx.add_view(Default::default(), |cx| {
-            Editor::for_buffer(buffer.clone(), None, settings.clone(), cx)
+            Editor::for_buffer(buffer.clone(), None, cx)
         });
 
         let search_bar = cx.add_view(Default::default(), |cx| {
-            let mut search_bar = SearchBar::new(settings, cx);
+            let mut search_bar = SearchBar::new(cx);
             search_bar.active_item_changed(Some(Box::new(editor.clone())), cx);
             search_bar
         });
diff --git a/crates/search/src/project_search.rs b/crates/search/src/project_search.rs
index 3e649fa4dd547ec2fb4be7ebaced4be504a6fbf9..e0f02edbc8cbcccb6e462a74a91eb9fd17ce2605 100644
--- a/crates/search/src/project_search.rs
+++ b/crates/search/src/project_search.rs
@@ -9,7 +9,6 @@ use gpui::{
     ModelContext, ModelHandle, MutableAppContext, RenderContext, Task, View, ViewContext,
     ViewHandle, WeakModelHandle,
 };
-use postage::watch;
 use project::{search::SearchQuery, Project};
 use std::{
     any::{Any, TypeId},
@@ -74,7 +73,6 @@ struct ProjectSearchView {
     regex: bool,
     query_contains_error: bool,
     active_match_index: Option<usize>,
-    settings: watch::Receiver<Settings>,
 }
 
 impl Entity for ProjectSearch {
@@ -146,11 +144,11 @@ impl Item for ProjectSearch {
 
     fn build_view(
         model: ModelHandle<Self>,
-        workspace: &Workspace,
+        _: &Workspace,
         nav_history: ItemNavHistory,
         cx: &mut gpui::ViewContext<Self::View>,
     ) -> Self::View {
-        ProjectSearchView::new(model, Some(nav_history), workspace.settings(), cx)
+        ProjectSearchView::new(model, Some(nav_history), cx)
     }
 
     fn project_path(&self) -> Option<project::ProjectPath> {
@@ -174,7 +172,7 @@ impl View for ProjectSearchView {
     fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
         let model = &self.model.read(cx);
         let results = if model.match_ranges.is_empty() {
-            let theme = &self.settings.borrow().theme;
+            let theme = &cx.app_state::<Settings>().theme;
             let text = if self.query_editor.read(cx).text(cx).is_empty() {
                 ""
             } else if model.pending_search.is_some() {
@@ -242,7 +240,7 @@ impl ItemView for ProjectSearchView {
     }
 
     fn tab_content(&self, tab_theme: &theme::Tab, cx: &gpui::AppContext) -> ElementBox {
-        let settings = self.settings.borrow();
+        let settings = cx.app_state::<Settings>();
         let search_theme = &settings.theme.search;
         Flex::row()
             .with_child(
@@ -316,12 +314,7 @@ impl ItemView for ProjectSearchView {
         Self: Sized,
     {
         let model = self.model.update(cx, |model, cx| model.clone(cx));
-        Some(Self::new(
-            model,
-            Some(nav_history),
-            self.settings.clone(),
-            cx,
-        ))
+        Some(Self::new(model, Some(nav_history), cx))
     }
 
     fn navigate(&mut self, data: Box<dyn Any>, cx: &mut ViewContext<Self>) {
@@ -338,7 +331,6 @@ impl ProjectSearchView {
     fn new(
         model: ModelHandle<ProjectSearch>,
         nav_history: Option<ItemNavHistory>,
-        settings: watch::Receiver<Settings>,
         cx: &mut ViewContext<Self>,
     ) -> Self {
         let project;
@@ -363,17 +355,14 @@ impl ProjectSearchView {
             .detach();
 
         let query_editor = cx.add_view(|cx| {
-            let mut editor = Editor::single_line(
-                settings.clone(),
-                Some(|theme| theme.search.editor.input.clone()),
-                cx,
-            );
+            let mut editor =
+                Editor::single_line(Some(|theme| theme.search.editor.input.clone()), cx);
             editor.set_text(query_text, cx);
             editor
         });
 
         let results_editor = cx.add_view(|cx| {
-            let mut editor = Editor::for_buffer(excerpts, Some(project), settings.clone(), cx);
+            let mut editor = Editor::for_buffer(excerpts, Some(project), cx);
             editor.set_searchable(false);
             editor.set_nav_history(nav_history);
             editor
@@ -396,7 +385,6 @@ impl ProjectSearchView {
             regex,
             query_contains_error: false,
             active_match_index: None,
-            settings,
         };
         this.model_changed(false, cx);
         this
@@ -560,11 +548,11 @@ impl ProjectSearchView {
         if match_ranges.is_empty() {
             self.active_match_index = None;
         } else {
-            let theme = &self.settings.borrow().theme.search;
             self.results_editor.update(cx, |editor, cx| {
                 if reset_selections {
                     editor.select_ranges(match_ranges.first().cloned(), Some(Autoscroll::Fit), cx);
                 }
+                let theme = &cx.app_state::<Settings>().theme.search;
                 editor.highlight_ranges::<Self>(match_ranges, theme.match_background, cx);
             });
             if self.query_editor.is_focused(cx) {
@@ -590,7 +578,7 @@ impl ProjectSearchView {
     }
 
     fn render_query_editor(&self, cx: &mut RenderContext<Self>) -> ElementBox {
-        let theme = &self.settings.borrow().theme;
+        let theme = cx.app_state::<Settings>().theme.clone();
         let editor_container = if self.query_contains_error {
             theme.search.invalid_editor
         } else {
@@ -652,9 +640,9 @@ impl ProjectSearchView {
         option: SearchOption,
         cx: &mut RenderContext<Self>,
     ) -> ElementBox {
-        let theme = &self.settings.borrow().theme.search;
         let is_active = self.is_option_enabled(option);
-        MouseEventHandler::new::<Self, _, _>(option as usize, cx, |state, _| {
+        MouseEventHandler::new::<Self, _, _>(option as usize, cx, |state, cx| {
+            let theme = &cx.app_state::<Settings>().theme.search;
             let style = match (is_active, state.hovered) {
                 (false, false) => &theme.option_button,
                 (false, true) => &theme.hovered_option_button,
@@ -685,9 +673,9 @@ impl ProjectSearchView {
         direction: Direction,
         cx: &mut RenderContext<Self>,
     ) -> ElementBox {
-        let theme = &self.settings.borrow().theme.search;
         enum NavButton {}
-        MouseEventHandler::new::<NavButton, _, _>(direction as usize, cx, |state, _| {
+        MouseEventHandler::new::<NavButton, _, _>(direction as usize, cx, |state, cx| {
+            let theme = &cx.app_state::<Settings>().theme.search;
             let style = if state.hovered {
                 &theme.hovered_option_button
             } else {
@@ -719,7 +707,7 @@ mod tests {
         let mut theme = gpui::fonts::with_font_cache(fonts.clone(), || theme::Theme::default());
         theme.search.match_background = Color::red();
         let settings = Settings::new("Courier", &fonts, Arc::new(theme)).unwrap();
-        let settings = watch::channel_with(settings).1;
+        cx.update(|cx| cx.add_app_state(settings));
 
         let fs = FakeFs::new(cx.background());
         fs.insert_tree(
@@ -744,7 +732,7 @@ mod tests {
 
         let search = cx.add_model(|cx| ProjectSearch::new(project, cx));
         let search_view = cx.add_view(Default::default(), |cx| {
-            ProjectSearchView::new(search.clone(), None, settings, cx)
+            ProjectSearchView::new(search.clone(), None, cx)
         });
 
         search_view.update(cx, |search_view, cx| {
diff --git a/crates/server/src/rpc.rs b/crates/server/src/rpc.rs
index 393e54165f9b424958c713b00f17eab49827b89c..d1b5227287b7180b236f59159d25a8f56fe3663a 100644
--- a/crates/server/src/rpc.rs
+++ b/crates/server/src/rpc.rs
@@ -1023,7 +1023,7 @@ mod tests {
     };
     use lsp;
     use parking_lot::Mutex;
-    use postage::{barrier, watch};
+    use postage::barrier;
     use project::{
         fs::{FakeFs, Fs as _},
         search::SearchQuery,
@@ -1152,14 +1152,7 @@ mod tests {
             .await
             .unwrap();
 
-        let editor_b = cx_b.add_view(window_b, |cx| {
-            Editor::for_buffer(
-                buffer_b,
-                None,
-                watch::channel_with(Settings::test(cx)).1,
-                cx,
-            )
-        });
+        let editor_b = cx_b.add_view(window_b, |cx| Editor::for_buffer(buffer_b, None, cx));
 
         // TODO
         // // Create a selection set as client B and see that selection set as client A.
@@ -2186,7 +2179,6 @@ mod tests {
             Editor::for_buffer(
                 cx.add_model(|cx| MultiBuffer::singleton(buffer_b.clone(), cx)),
                 Some(project_b.clone()),
-                watch::channel_with(Settings::test(cx)).1,
                 cx,
             )
         });
@@ -4424,6 +4416,11 @@ mod tests {
         }
 
         async fn create_client(&mut self, cx: &mut TestAppContext, name: &str) -> TestClient {
+            cx.update(|cx| {
+                let settings = Settings::test(cx);
+                cx.add_app_state(settings);
+            });
+
             let http = FakeHttpClient::with_404_response();
             let user_id = self.app_state.db.create_user(name, false).await.unwrap();
             let client_name = name.to_string();
diff --git a/crates/theme_selector/src/theme_selector.rs b/crates/theme_selector/src/theme_selector.rs
index bbc4df50b550d33dc74864d2f7f3a9caf52f897f..c3199bc20bf24153de96ef98f24da8b97d6874ed 100644
--- a/crates/theme_selector/src/theme_selector.rs
+++ b/crates/theme_selector/src/theme_selector.rs
@@ -7,25 +7,14 @@ use gpui::{
     AppContext, Axis, Element, ElementBox, Entity, MutableAppContext, RenderContext, View,
     ViewContext, ViewHandle,
 };
-use parking_lot::Mutex;
-use postage::watch;
 use std::{cmp, sync::Arc};
 use theme::{Theme, ThemeRegistry};
 use workspace::{
     menu::{Confirm, SelectNext, SelectPrev},
-    AppState, Settings, Workspace,
+    Settings, Workspace,
 };
 
-#[derive(Clone)]
-pub struct ThemeSelectorParams {
-    pub settings_tx: Arc<Mutex<watch::Sender<Settings>>>,
-    pub settings: watch::Receiver<Settings>,
-    pub themes: Arc<ThemeRegistry>,
-}
-
 pub struct ThemeSelector {
-    settings_tx: Arc<Mutex<watch::Sender<Settings>>>,
-    settings: watch::Receiver<Settings>,
     themes: Arc<ThemeRegistry>,
     matches: Vec<StringMatch>,
     query_editor: ViewHandle<Editor>,
@@ -35,10 +24,10 @@ pub struct ThemeSelector {
     selection_completed: bool,
 }
 
-action!(Toggle, ThemeSelectorParams);
-action!(Reload, ThemeSelectorParams);
+action!(Toggle, Arc<ThemeRegistry>);
+action!(Reload, Arc<ThemeRegistry>);
 
-pub fn init(params: ThemeSelectorParams, cx: &mut MutableAppContext) {
+pub fn init(themes: Arc<ThemeRegistry>, cx: &mut MutableAppContext) {
     cx.add_action(ThemeSelector::confirm);
     cx.add_action(ThemeSelector::select_prev);
     cx.add_action(ThemeSelector::select_next);
@@ -46,9 +35,9 @@ pub fn init(params: ThemeSelectorParams, cx: &mut MutableAppContext) {
     cx.add_action(ThemeSelector::reload);
 
     cx.add_bindings(vec![
-        Binding::new("cmd-k cmd-t", Toggle(params.clone()), None),
-        Binding::new("cmd-k t", Reload(params.clone()), None),
-        Binding::new("escape", Toggle(params.clone()), Some("ThemeSelector")),
+        Binding::new("cmd-k cmd-t", Toggle(themes.clone()), None),
+        Binding::new("cmd-k t", Reload(themes.clone()), None),
+        Binding::new("escape", Toggle(themes.clone()), Some("ThemeSelector")),
     ]);
 }
 
@@ -57,28 +46,17 @@ pub enum Event {
 }
 
 impl ThemeSelector {
-    fn new(
-        settings_tx: Arc<Mutex<watch::Sender<Settings>>>,
-        settings: watch::Receiver<Settings>,
-        registry: Arc<ThemeRegistry>,
-        cx: &mut ViewContext<Self>,
-    ) -> Self {
+    fn new(registry: Arc<ThemeRegistry>, cx: &mut ViewContext<Self>) -> Self {
         let query_editor = cx.add_view(|cx| {
-            Editor::single_line(
-                settings.clone(),
-                Some(|theme| theme.selector.input_editor.clone()),
-                cx,
-            )
+            Editor::single_line(Some(|theme| theme.selector.input_editor.clone()), cx)
         });
 
         cx.subscribe(&query_editor, Self::on_query_editor_event)
             .detach();
 
-        let original_theme = settings.borrow().theme.clone();
+        let original_theme = cx.app_state::<Settings>().theme.clone();
 
         let mut this = Self {
-            settings,
-            settings_tx,
             themes: registry,
             query_editor,
             matches: Vec::new(),
@@ -97,25 +75,18 @@ impl ThemeSelector {
 
     fn toggle(workspace: &mut Workspace, action: &Toggle, cx: &mut ViewContext<Workspace>) {
         workspace.toggle_modal(cx, |cx, _| {
-            let selector = cx.add_view(|cx| {
-                Self::new(
-                    action.0.settings_tx.clone(),
-                    action.0.settings.clone(),
-                    action.0.themes.clone(),
-                    cx,
-                )
-            });
+            let selector = cx.add_view(|cx| Self::new(action.0.clone(), cx));
             cx.subscribe(&selector, Self::on_event).detach();
             selector
         });
     }
 
-    fn reload(_: &mut Workspace, action: &Reload, _: &mut ViewContext<Workspace>) {
-        let current_theme_name = action.0.settings.borrow().theme.name.clone();
-        action.0.themes.clear();
-        match action.0.themes.get(&current_theme_name) {
+    fn reload(_: &mut Workspace, action: &Reload, cx: &mut ViewContext<Workspace>) {
+        let current_theme_name = cx.app_state::<Settings>().theme.name.clone();
+        action.0.clear();
+        match action.0.get(&current_theme_name) {
             Ok(theme) => {
-                action.0.settings_tx.lock().borrow_mut().theme = theme;
+                Self::set_theme(theme, cx);
                 log::info!("reloaded theme {}", current_theme_name);
             }
             Err(error) => {
@@ -136,7 +107,7 @@ impl ThemeSelector {
         self.list_state
             .scroll_to(ScrollTarget::Show(self.selected_index));
 
-        self.show_selected_theme();
+        self.show_selected_theme(cx);
         cx.notify();
     }
 
@@ -147,14 +118,14 @@ impl ThemeSelector {
         self.list_state
             .scroll_to(ScrollTarget::Show(self.selected_index));
 
-        self.show_selected_theme();
+        self.show_selected_theme(cx);
         cx.notify();
     }
 
-    fn show_selected_theme(&mut self) {
+    fn show_selected_theme(&mut self, cx: &mut ViewContext<Self>) {
         if let Some(mat) = self.matches.get(self.selected_index) {
             match self.themes.get(&mat.string) {
-                Ok(theme) => self.set_theme(theme),
+                Ok(theme) => Self::set_theme(theme, cx),
                 Err(error) => {
                     log::error!("error loading theme {}: {}", mat.string, error)
                 }
@@ -170,14 +141,6 @@ impl ThemeSelector {
             .unwrap_or(self.selected_index);
     }
 
-    fn current_theme(&self) -> Arc<Theme> {
-        self.settings_tx.lock().borrow().theme.clone()
-    }
-
-    fn set_theme(&self, theme: Arc<Theme>) {
-        self.settings_tx.lock().borrow_mut().theme = theme;
-    }
-
     fn update_matches(&mut self, cx: &mut ViewContext<Self>) {
         let background = cx.background().clone();
         let candidates = self
@@ -243,8 +206,8 @@ impl ThemeSelector {
         match event {
             editor::Event::Edited => {
                 self.update_matches(cx);
-                self.select_if_matching(&self.current_theme().name);
-                self.show_selected_theme();
+                self.select_if_matching(&cx.app_state::<Settings>().theme.name);
+                self.show_selected_theme(cx);
             }
             editor::Event::Blurred => cx.emit(Event::Dismissed),
             _ => {}
@@ -253,7 +216,7 @@ impl ThemeSelector {
 
     fn render_matches(&self, cx: &mut RenderContext<Self>) -> ElementBox {
         if self.matches.is_empty() {
-            let settings = self.settings.borrow();
+            let settings = cx.app_state::<Settings>();
             return Container::new(
                 Label::new(
                     "No matches".into(),
@@ -266,31 +229,29 @@ impl ThemeSelector {
         }
 
         let handle = cx.handle();
-        let list = UniformList::new(
-            self.list_state.clone(),
-            self.matches.len(),
-            move |mut range, items, cx| {
-                let cx = cx.as_ref();
-                let selector = handle.upgrade(cx).unwrap();
-                let selector = selector.read(cx);
-                let start = range.start;
-                range.end = cmp::min(range.end, selector.matches.len());
-                items.extend(
-                    selector.matches[range]
-                        .iter()
-                        .enumerate()
-                        .map(move |(i, path_match)| selector.render_match(path_match, start + i)),
-                );
-            },
-        );
+        let list =
+            UniformList::new(
+                self.list_state.clone(),
+                self.matches.len(),
+                move |mut range, items, cx| {
+                    let cx = cx.as_ref();
+                    let selector = handle.upgrade(cx).unwrap();
+                    let selector = selector.read(cx);
+                    let start = range.start;
+                    range.end = cmp::min(range.end, selector.matches.len());
+                    items.extend(selector.matches[range].iter().enumerate().map(
+                        move |(i, path_match)| selector.render_match(path_match, start + i, cx),
+                    ));
+                },
+            );
 
         Container::new(list.boxed())
             .with_margin_top(6.0)
             .named("matches")
     }
 
-    fn render_match(&self, theme_match: &StringMatch, index: usize) -> ElementBox {
-        let settings = self.settings.borrow();
+    fn render_match(&self, theme_match: &StringMatch, index: usize, cx: &AppContext) -> ElementBox {
+        let settings = cx.app_state::<Settings>();
         let theme = &settings.theme;
 
         let container = Container::new(
@@ -313,14 +274,21 @@ impl ThemeSelector {
 
         container.boxed()
     }
+
+    fn set_theme(theme: Arc<Theme>, cx: &mut MutableAppContext) {
+        cx.update_app_state::<Settings, _, _>(|settings, cx| {
+            settings.theme = theme;
+            cx.refresh_windows();
+        });
+    }
 }
 
 impl Entity for ThemeSelector {
     type Event = Event;
 
-    fn release(&mut self, _: &mut MutableAppContext) {
+    fn release(&mut self, cx: &mut MutableAppContext) {
         if !self.selection_completed {
-            self.set_theme(self.original_theme.clone());
+            Self::set_theme(self.original_theme.clone(), cx);
         }
     }
 }
@@ -331,8 +299,7 @@ impl View for ThemeSelector {
     }
 
     fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
-        let settings = self.settings.borrow();
-
+        let theme = cx.app_state::<Settings>().theme.clone();
         Align::new(
             ConstrainedBox::new(
                 Container::new(
@@ -340,13 +307,13 @@ impl View for ThemeSelector {
                         .with_child(
                             ChildView::new(&self.query_editor)
                                 .contained()
-                                .with_style(settings.theme.selector.input_editor.container)
+                                .with_style(theme.selector.input_editor.container)
                                 .boxed(),
                         )
                         .with_child(Flexible::new(1.0, false, self.render_matches(cx)).boxed())
                         .boxed(),
                 )
-                .with_style(settings.theme.selector.container)
+                .with_style(theme.selector.container)
                 .boxed(),
             )
             .with_max_width(600.0)
@@ -367,13 +334,3 @@ impl View for ThemeSelector {
         cx
     }
 }
-
-impl<'a> From<&'a AppState> for ThemeSelectorParams {
-    fn from(state: &'a AppState) -> Self {
-        Self {
-            settings_tx: state.settings_tx.clone(),
-            settings: state.settings.clone(),
-            themes: state.themes.clone(),
-        }
-    }
-}
diff --git a/crates/workspace/src/lsp_status.rs b/crates/workspace/src/lsp_status.rs
index 43b58bd02b2c59881c252924ed88c0b7d0073ad6..db160ab06fed41d4974d7fd83721f58acb415a19 100644
--- a/crates/workspace/src/lsp_status.rs
+++ b/crates/workspace/src/lsp_status.rs
@@ -6,7 +6,6 @@ use gpui::{
     RenderContext, View, ViewContext,
 };
 use language::{LanguageRegistry, LanguageServerBinaryStatus};
-use postage::watch;
 use project::{LanguageServerProgress, Project};
 use smallvec::SmallVec;
 use std::cmp::Reverse;
@@ -16,7 +15,6 @@ use std::sync::Arc;
 action!(DismissErrorMessage);
 
 pub struct LspStatus {
-    settings_rx: watch::Receiver<Settings>,
     checking_for_update: Vec<String>,
     downloading: Vec<String>,
     failed: Vec<String>,
@@ -31,7 +29,6 @@ impl LspStatus {
     pub fn new(
         project: &ModelHandle<Project>,
         languages: Arc<LanguageRegistry>,
-        settings_rx: watch::Receiver<Settings>,
         cx: &mut ViewContext<Self>,
     ) -> Self {
         let mut status_events = languages.language_server_binary_statuses();
@@ -72,7 +69,6 @@ impl LspStatus {
         cx.observe(project, |_, _, cx| cx.notify()).detach();
 
         Self {
-            settings_rx,
             checking_for_update: Default::default(),
             downloading: Default::default(),
             failed: Default::default(),
@@ -120,7 +116,7 @@ impl View for LspStatus {
     }
 
     fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
-        let theme = &self.settings_rx.borrow().theme;
+        let theme = &cx.app_state::<Settings>().theme;
 
         let mut pending_work = self.pending_language_server_work(cx);
         if let Some((lang_server_name, progress_token, progress)) = pending_work.next() {
@@ -169,7 +165,8 @@ impl View for LspStatus {
             .boxed()
         } else if !self.failed.is_empty() {
             drop(pending_work);
-            MouseEventHandler::new::<Self, _, _>(0, cx, |_, _| {
+            MouseEventHandler::new::<Self, _, _>(0, cx, |_, cx| {
+                let theme = &cx.app_state::<Settings>().theme;
                 Label::new(
                     format!(
                         "Failed to download {} language server{}. Click to dismiss.",
diff --git a/crates/workspace/src/pane.rs b/crates/workspace/src/pane.rs
index 15195f24341e6c7a321323ac58eac711dfe9b64d..c54a1b050b341cb75f1768269579f25c43fa64cb 100644
--- a/crates/workspace/src/pane.rs
+++ b/crates/workspace/src/pane.rs
@@ -10,7 +10,6 @@ use gpui::{
     AnyViewHandle, Entity, MutableAppContext, Quad, RenderContext, Task, View, ViewContext,
     ViewHandle, WeakViewHandle,
 };
-use postage::watch;
 use project::ProjectPath;
 use std::{
     any::{Any, TypeId},
@@ -100,7 +99,6 @@ pub enum Event {
 pub struct Pane {
     item_views: Vec<(usize, Box<dyn ItemViewHandle>)>,
     active_item_index: usize,
-    settings: watch::Receiver<Settings>,
     nav_history: Rc<RefCell<NavHistory>>,
     toolbars: HashMap<TypeId, Box<dyn ToolbarHandle>>,
     active_toolbar_type: Option<TypeId>,
@@ -159,11 +157,10 @@ pub struct NavigationEntry {
 }
 
 impl Pane {
-    pub fn new(settings: watch::Receiver<Settings>) -> Self {
+    pub fn new() -> Self {
         Self {
             item_views: Vec::new(),
             active_item_index: 0,
-            settings,
             nav_history: Default::default(),
             toolbars: Default::default(),
             active_toolbar_type: Default::default(),
@@ -513,8 +510,7 @@ impl Pane {
     }
 
     fn render_tabs(&self, cx: &mut RenderContext<Self>) -> ElementBox {
-        let settings = self.settings.borrow();
-        let theme = &settings.theme;
+        let theme = cx.app_state::<Settings>().theme.clone();
 
         enum Tabs {}
         let tabs = MouseEventHandler::new::<Tabs, _, _>(0, cx, |mouse_state, cx| {
diff --git a/crates/workspace/src/settings.rs b/crates/workspace/src/settings.rs
index fbda0e2b714b844a460d84f1827dfcf3d2db928c..9e11002acd713103a9703e4422feaf5aaadbd493 100644
--- a/crates/workspace/src/settings.rs
+++ b/crates/workspace/src/settings.rs
@@ -5,7 +5,6 @@ use gpui::{
     font_cache::{FamilyId, FontCache},
 };
 use language::Language;
-use parking_lot::Mutex;
 use postage::{prelude::Stream, watch};
 use project::Fs;
 use schemars::{schema_for, JsonSchema};
@@ -66,8 +65,7 @@ impl SettingsFile {
         let path = path.into();
         let settings = Self::load(fs.clone(), &path).await.unwrap_or_default();
         let mut events = fs.watch(&path, Duration::from_millis(500)).await;
-        let (mut tx, mut rx) = watch::channel_with(settings);
-        rx.recv().await;
+        let (mut tx, rx) = watch::channel_with(settings);
         executor
             .spawn(async move {
                 while events.next().await.is_some() {
@@ -103,30 +101,26 @@ impl Settings {
     pub fn from_files(
         defaults: Self,
         sources: Vec<SettingsFile>,
-        executor: Arc<executor::Background>,
         theme_registry: Arc<ThemeRegistry>,
         font_cache: Arc<FontCache>,
-    ) -> (Arc<Mutex<watch::Sender<Self>>>, watch::Receiver<Self>) {
-        let (tx, mut rx) = watch::channel_with(defaults.clone());
-        let tx = Arc::new(Mutex::new(tx));
-        executor
-            .spawn({
-                let tx = tx.clone();
-                async move {
-                    let mut stream =
-                        stream::select_all(sources.iter().map(|source| source.0.clone()));
-                    while stream.next().await.is_some() {
-                        let mut settings = defaults.clone();
-                        for source in &sources {
-                            settings.merge(&*source.0.borrow(), &theme_registry, &font_cache);
-                        }
-                        *tx.lock().borrow_mut() = settings;
-                    }
-                }
-            })
-            .detach();
-        rx.try_recv().ok();
-        (tx, rx)
+    ) -> impl futures::stream::Stream<Item = Self> {
+        stream::select_all(sources.iter().enumerate().map(|(i, source)| {
+            let mut rx = source.0.clone();
+            // Consume the initial item from all of the constituent file watches but one.
+            // This way, the stream will yield exactly one item for the files' initial
+            // state, and won't return any more items until the files change.
+            if i > 0 {
+                rx.try_recv().ok();
+            }
+            rx
+        }))
+        .map(move |_| {
+            let mut settings = defaults.clone();
+            for source in &sources {
+                settings.merge(&*source.0.borrow(), &theme_registry, &font_cache);
+            }
+            settings
+        })
     }
 
     pub fn new(
@@ -245,7 +239,6 @@ fn merge_option<T: Copy>(target: &mut Option<T>, value: Option<T>) {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use postage::prelude::Stream;
     use project::FakeFs;
 
     #[gpui::test]
@@ -276,15 +269,14 @@ mod tests {
         let source2 = SettingsFile::new(fs.clone(), &executor, "/settings2.json".as_ref()).await;
         let source3 = SettingsFile::new(fs.clone(), &executor, "/settings3.json".as_ref()).await;
 
-        let (_, mut settings_rx) = Settings::from_files(
+        let mut settings_rx = Settings::from_files(
             cx.read(Settings::test),
             vec![source1, source2, source3],
-            cx.background(),
             ThemeRegistry::new((), cx.font_cache()),
             cx.font_cache(),
         );
 
-        let settings = settings_rx.recv().await.unwrap();
+        let settings = settings_rx.next().await.unwrap();
         let md_settings = settings.language_overrides.get("Markdown").unwrap();
         assert_eq!(settings.soft_wrap, SoftWrap::EditorWidth);
         assert_eq!(settings.buffer_font_size, 24.0);
@@ -310,7 +302,7 @@ mod tests {
         .await
         .unwrap();
 
-        let settings = settings_rx.recv().await.unwrap();
+        let settings = settings_rx.next().await.unwrap();
         let md_settings = settings.language_overrides.get("Markdown").unwrap();
         assert_eq!(settings.soft_wrap, SoftWrap::None);
         assert_eq!(settings.buffer_font_size, 24.0);
@@ -322,7 +314,7 @@ mod tests {
             .await
             .unwrap();
 
-        let settings = settings_rx.recv().await.unwrap();
+        let settings = settings_rx.next().await.unwrap();
         assert_eq!(settings.tab_size, 4);
     }
 }
diff --git a/crates/workspace/src/sidebar.rs b/crates/workspace/src/sidebar.rs
index 9de355c303c265de229fef1cd70d4af0fa32369a..46713424e64413fb0ef0eea89b18d45e78d66597 100644
--- a/crates/workspace/src/sidebar.rs
+++ b/crates/workspace/src/sidebar.rs
@@ -1,7 +1,7 @@
 use super::Workspace;
-use crate::Settings;
 use gpui::{action, elements::*, platform::CursorStyle, AnyViewHandle, RenderContext};
 use std::{cell::RefCell, rc::Rc};
+use theme::Theme;
 
 pub struct Sidebar {
     side: Side,
@@ -62,16 +62,16 @@ impl Sidebar {
             .map(|item| &item.view)
     }
 
-    fn theme<'a>(&self, settings: &'a Settings) -> &'a theme::Sidebar {
+    fn theme<'a>(&self, theme: &'a Theme) -> &'a theme::Sidebar {
         match self.side {
-            Side::Left => &settings.theme.workspace.left_sidebar,
-            Side::Right => &settings.theme.workspace.right_sidebar,
+            Side::Left => &theme.workspace.left_sidebar,
+            Side::Right => &theme.workspace.right_sidebar,
         }
     }
 
-    pub fn render(&self, settings: &Settings, cx: &mut RenderContext<Workspace>) -> ElementBox {
+    pub fn render(&self, theme: &Theme, cx: &mut RenderContext<Workspace>) -> ElementBox {
         let side = self.side;
-        let theme = self.theme(settings);
+        let theme = self.theme(theme);
 
         ConstrainedBox::new(
             Container::new(
@@ -119,13 +119,13 @@ impl Sidebar {
 
     pub fn render_active_item(
         &self,
-        settings: &Settings,
+        theme: &Theme,
         cx: &mut RenderContext<Workspace>,
     ) -> Option<ElementBox> {
         if let Some(active_item) = self.active_item() {
             let mut container = Flex::row();
             if matches!(self.side, Side::Right) {
-                container.add_child(self.render_resize_handle(settings, cx));
+                container.add_child(self.render_resize_handle(theme, cx));
             }
 
             container.add_child(
@@ -142,7 +142,7 @@ impl Sidebar {
                 .boxed(),
             );
             if matches!(self.side, Side::Left) {
-                container.add_child(self.render_resize_handle(settings, cx));
+                container.add_child(self.render_resize_handle(theme, cx));
             }
             Some(container.boxed())
         } else {
@@ -150,16 +150,12 @@ impl Sidebar {
         }
     }
 
-    fn render_resize_handle(
-        &self,
-        settings: &Settings,
-        cx: &mut RenderContext<Workspace>,
-    ) -> ElementBox {
+    fn render_resize_handle(&self, theme: &Theme, cx: &mut RenderContext<Workspace>) -> ElementBox {
         let width = self.width.clone();
         let side = self.side;
         MouseEventHandler::new::<Self, _, _>(side as usize, cx, |_, _| {
             Container::new(Empty::new().boxed())
-                .with_style(self.theme(settings).resize_handle)
+                .with_style(self.theme(theme).resize_handle)
                 .boxed()
         })
         .with_padding(Padding {
diff --git a/crates/workspace/src/status_bar.rs b/crates/workspace/src/status_bar.rs
index d4cd939cb8afc08a38b0c0f3399035d905187978..c387fbe07064ccc136e839f4d8c07a57b1962d84 100644
--- a/crates/workspace/src/status_bar.rs
+++ b/crates/workspace/src/status_bar.rs
@@ -3,7 +3,6 @@ use gpui::{
     elements::*, AnyViewHandle, ElementBox, Entity, MutableAppContext, RenderContext, Subscription,
     View, ViewContext, ViewHandle,
 };
-use postage::watch;
 
 pub trait StatusItemView: View {
     fn set_active_pane_item(
@@ -27,7 +26,6 @@ pub struct StatusBar {
     right_items: Vec<Box<dyn StatusItemViewHandle>>,
     active_pane: ViewHandle<Pane>,
     _observe_active_pane: Subscription,
-    settings: watch::Receiver<Settings>,
 }
 
 impl Entity for StatusBar {
@@ -39,8 +37,8 @@ impl View for StatusBar {
         "StatusBar"
     }
 
-    fn render(&mut self, _: &mut RenderContext<Self>) -> ElementBox {
-        let theme = &self.settings.borrow().theme.workspace.status_bar;
+    fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
+        let theme = &cx.app_state::<Settings>().theme.workspace.status_bar;
         Flex::row()
             .with_children(self.left_items.iter().map(|i| {
                 ChildView::new(i.as_ref())
@@ -66,18 +64,13 @@ impl View for StatusBar {
 }
 
 impl StatusBar {
-    pub fn new(
-        active_pane: &ViewHandle<Pane>,
-        settings: watch::Receiver<Settings>,
-        cx: &mut ViewContext<Self>,
-    ) -> Self {
+    pub fn new(active_pane: &ViewHandle<Pane>, cx: &mut ViewContext<Self>) -> Self {
         let mut this = Self {
             left_items: Default::default(),
             right_items: Default::default(),
             active_pane: active_pane.clone(),
             _observe_active_pane: cx
                 .observe(active_pane, |this, _, cx| this.update_active_pane_item(cx)),
-            settings,
         };
         this.update_active_pane_item(cx);
         this
diff --git a/crates/workspace/src/workspace.rs b/crates/workspace/src/workspace.rs
index f06a244c0580fe9bf31ad2a387e9622322308daa..69b6ae643ff524a8244017642a6cc28d8100da2e 100644
--- a/crates/workspace/src/workspace.rs
+++ b/crates/workspace/src/workspace.rs
@@ -26,8 +26,7 @@ use language::LanguageRegistry;
 use log::error;
 pub use pane::*;
 pub use pane_group::*;
-use parking_lot::Mutex;
-use postage::{prelude::Stream, watch};
+use postage::prelude::Stream;
 use project::{fs, Fs, Project, ProjectPath, Worktree};
 pub use settings::Settings;
 use sidebar::{Side, Sidebar, SidebarItemId, ToggleSidebarItem, ToggleSidebarItemFocus};
@@ -100,8 +99,6 @@ pub fn init(cx: &mut MutableAppContext) {
 }
 
 pub struct AppState {
-    pub settings_tx: Arc<Mutex<watch::Sender<Settings>>>,
-    pub settings: watch::Receiver<Settings>,
     pub languages: Arc<LanguageRegistry>,
     pub themes: Arc<ThemeRegistry>,
     pub client: Arc<client::Client>,
@@ -495,7 +492,6 @@ pub struct WorkspaceParams {
     pub client: Arc<Client>,
     pub fs: Arc<dyn Fs>,
     pub languages: Arc<LanguageRegistry>,
-    pub settings: watch::Receiver<Settings>,
     pub user_store: ModelHandle<UserStore>,
     pub channel_list: ModelHandle<ChannelList>,
     pub path_openers: Arc<[Box<dyn PathOpener>]>,
@@ -504,15 +500,15 @@ pub struct WorkspaceParams {
 impl WorkspaceParams {
     #[cfg(any(test, feature = "test-support"))]
     pub fn test(cx: &mut MutableAppContext) -> Self {
+        let settings = Settings::test(cx);
+        cx.add_app_state(settings);
+
         let fs = project::FakeFs::new(cx.background().clone());
         let languages = Arc::new(LanguageRegistry::test());
         let http_client = client::test::FakeHttpClient::new(|_| async move {
             Ok(client::http::ServerResponse::new(404))
         });
         let client = Client::new(http_client.clone());
-        let theme =
-            gpui::fonts::with_font_cache(cx.font_cache().clone(), || theme::Theme::default());
-        let settings = Settings::new("Courier", cx.font_cache(), Arc::new(theme)).unwrap();
         let user_store = cx.add_model(|cx| UserStore::new(client.clone(), http_client, cx));
         let project = Project::local(
             client.clone(),
@@ -528,7 +524,6 @@ impl WorkspaceParams {
             client,
             fs,
             languages,
-            settings: watch::channel_with(settings).1,
             user_store,
             path_openers: Arc::from([]),
         }
@@ -547,7 +542,6 @@ impl WorkspaceParams {
             client: app_state.client.clone(),
             fs: app_state.fs.clone(),
             languages: app_state.languages.clone(),
-            settings: app_state.settings.clone(),
             user_store: app_state.user_store.clone(),
             channel_list: app_state.channel_list.clone(),
             path_openers: app_state.path_openers.clone(),
@@ -556,7 +550,6 @@ impl WorkspaceParams {
 }
 
 pub struct Workspace {
-    pub settings: watch::Receiver<Settings>,
     weak_self: WeakViewHandle<Self>,
     client: Arc<Client>,
     user_store: ModelHandle<client::UserStore>,
@@ -584,7 +577,7 @@ impl Workspace {
         })
         .detach();
 
-        let pane = cx.add_view(|_| Pane::new(params.settings.clone()));
+        let pane = cx.add_view(|_| Pane::new());
         let pane_id = pane.id();
         cx.observe(&pane, move |me, _, cx| {
             let active_entry = me.active_project_path(cx);
@@ -598,7 +591,7 @@ impl Workspace {
         .detach();
         cx.focus(&pane);
 
-        let status_bar = cx.add_view(|cx| StatusBar::new(&pane, params.settings.clone(), cx));
+        let status_bar = cx.add_view(|cx| StatusBar::new(&pane, cx));
         let mut current_user = params.user_store.read(cx).watch_current_user().clone();
         let mut connection_status = params.client.status().clone();
         let _observe_current_user = cx.spawn_weak(|this, mut cx| async move {
@@ -623,7 +616,6 @@ impl Workspace {
             panes: vec![pane.clone()],
             active_pane: pane.clone(),
             status_bar,
-            settings: params.settings.clone(),
             client: params.client.clone(),
             user_store: params.user_store.clone(),
             fs: params.fs.clone(),
@@ -640,10 +632,6 @@ impl Workspace {
         self.weak_self.clone()
     }
 
-    pub fn settings(&self) -> watch::Receiver<Settings> {
-        self.settings.clone()
-    }
-
     pub fn left_sidebar_mut(&mut self) -> &mut Sidebar {
         &mut self.left_sidebar
     }
@@ -953,7 +941,7 @@ impl Workspace {
     }
 
     fn add_pane(&mut self, cx: &mut ViewContext<Self>) -> ViewHandle<Pane> {
-        let pane = cx.add_view(|_| Pane::new(self.settings.clone()));
+        let pane = cx.add_view(|_| Pane::new());
         let pane_id = pane.id();
         cx.observe(&pane, move |me, _, cx| {
             let active_entry = me.active_project_path(cx);
@@ -1128,8 +1116,8 @@ impl Workspace {
         });
     }
 
-    fn render_connection_status(&self) -> Option<ElementBox> {
-        let theme = &self.settings.borrow().theme;
+    fn render_connection_status(&self, cx: &mut RenderContext<Self>) -> Option<ElementBox> {
+        let theme = &cx.app_state::<Settings>().theme;
         match &*self.client.status().borrow() {
             client::Status::ConnectionError
             | client::Status::ConnectionLost
@@ -1187,7 +1175,7 @@ impl Workspace {
                                     theme,
                                     cx,
                                 ))
-                                .with_children(self.render_connection_status())
+                                .with_children(self.render_connection_status(cx))
                                 .boxed(),
                         )
                         .right()
@@ -1315,7 +1303,7 @@ impl Workspace {
 
     fn render_disconnected_overlay(&self, cx: &AppContext) -> Option<ElementBox> {
         if self.project.read(cx).is_read_only() {
-            let theme = &self.settings.borrow().theme;
+            let theme = &cx.app_state::<Settings>().theme;
             Some(
                 EventHandler::new(
                     Label::new(
@@ -1346,8 +1334,7 @@ impl View for Workspace {
     }
 
     fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
-        let settings = self.settings.borrow();
-        let theme = &settings.theme;
+        let theme = cx.app_state::<Settings>().theme.clone();
         Stack::new()
             .with_child(
                 Flex::column()
@@ -1356,32 +1343,28 @@ impl View for Workspace {
                         Stack::new()
                             .with_child({
                                 let mut content = Flex::row();
-                                content.add_child(self.left_sidebar.render(&settings, cx));
+                                content.add_child(self.left_sidebar.render(&theme, cx));
                                 if let Some(element) =
-                                    self.left_sidebar.render_active_item(&settings, cx)
+                                    self.left_sidebar.render_active_item(&theme, cx)
                                 {
                                     content.add_child(Flexible::new(0.8, false, element).boxed());
                                 }
                                 content.add_child(
                                     Flex::column()
                                         .with_child(
-                                            Flexible::new(
-                                                1.,
-                                                true,
-                                                self.center.render(&settings.theme),
-                                            )
-                                            .boxed(),
+                                            Flexible::new(1., true, self.center.render(&theme))
+                                                .boxed(),
                                         )
                                         .with_child(ChildView::new(&self.status_bar).boxed())
                                         .flexible(1., true)
                                         .boxed(),
                                 );
                                 if let Some(element) =
-                                    self.right_sidebar.render_active_item(&settings, cx)
+                                    self.right_sidebar.render_active_item(&theme, cx)
                                 {
                                     content.add_child(Flexible::new(0.8, false, element).boxed());
                                 }
-                                content.add_child(self.right_sidebar.render(&settings, cx));
+                                content.add_child(self.right_sidebar.render(&theme, cx));
                                 content.boxed()
                             })
                             .with_children(self.modal.as_ref().map(|m| ChildView::new(m).boxed()))
@@ -1389,7 +1372,7 @@ impl View for Workspace {
                             .boxed(),
                     )
                     .contained()
-                    .with_background_color(settings.theme.workspace.background)
+                    .with_background_color(theme.workspace.background)
                     .boxed(),
             )
             .with_children(self.render_disconnected_overlay(cx))
diff --git a/crates/zed/src/main.rs b/crates/zed/src/main.rs
index da1186d5bfaeb5357d297342fdfac2ae8a989de2..85960002469249d94503954f4775d4e4e7a23851 100644
--- a/crates/zed/src/main.rs
+++ b/crates/zed/src/main.rs
@@ -8,7 +8,6 @@ use futures::{channel::oneshot, StreamExt};
 use gpui::{App, AssetSource, Task};
 use log::LevelFilter;
 use parking_lot::Mutex;
-use postage::{prelude::Stream, watch};
 use project::Fs;
 use simplelog::SimpleLogger;
 use smol::process::Command;
@@ -93,23 +92,29 @@ fn main() {
         .detach_and_log_err(cx);
 
         let settings_file = cx.background().block(settings_file).unwrap();
-        let (settings_tx, settings) = Settings::from_files(
+        let mut settings_rx = Settings::from_files(
             default_settings,
             vec![settings_file],
-            cx.background().clone(),
             themes.clone(),
             cx.font_cache().clone(),
         );
-
-        refresh_window_on_settings_change(settings.clone(), cx);
+        let settings = cx.background().block(settings_rx.next()).unwrap();
+        cx.spawn(|mut cx| async move {
+            while let Some(settings) = settings_rx.next().await {
+                cx.update(|cx| {
+                    cx.update_app_state(|s, _| *s = settings);
+                    cx.refresh_windows();
+                });
+            }
+        })
+        .detach();
 
         languages.set_language_server_download_dir(zed::ROOT_PATH.clone());
-        languages.set_theme(&settings.borrow().theme.editor.syntax);
+        languages.set_theme(&settings.theme.editor.syntax);
+        cx.add_app_state(settings);
 
         let app_state = Arc::new(AppState {
             languages: Arc::new(languages),
-            settings_tx,
-            settings,
             themes,
             channel_list,
             client,
@@ -121,7 +126,7 @@ fn main() {
         });
         journal::init(app_state.clone(), cx);
         zed::init(&app_state, cx);
-        theme_selector::init(app_state.as_ref().into(), cx);
+        theme_selector::init(app_state.themes.clone(), cx);
 
         cx.set_menus(menus::menus(&app_state.clone()));
 
@@ -242,16 +247,3 @@ fn load_settings_file(app: &App, fs: Arc<dyn Fs>) -> oneshot::Receiver<SettingsF
         .detach();
     rx
 }
-
-fn refresh_window_on_settings_change(
-    mut settings_rx: watch::Receiver<Settings>,
-    cx: &mut gpui::MutableAppContext,
-) {
-    settings_rx.try_recv().ok();
-    cx.spawn(|mut cx| async move {
-        while settings_rx.next().await.is_some() {
-            cx.update(|cx| cx.refresh_windows());
-        }
-    })
-    .detach();
-}
diff --git a/crates/zed/src/test.rs b/crates/zed/src/test.rs
index 7504bc05c1728e1662d6cbedf91e5b8bcb26f640..35610854f30fd272a8763f6ecc8d016381e12baf 100644
--- a/crates/zed/src/test.rs
+++ b/crates/zed/src/test.rs
@@ -2,8 +2,6 @@ use crate::{assets::Assets, build_window_options, build_workspace, AppState};
 use client::{test::FakeHttpClient, ChannelList, Client, UserStore};
 use gpui::MutableAppContext;
 use language::LanguageRegistry;
-use parking_lot::Mutex;
-use postage::watch;
 use project::fs::FakeFs;
 use std::sync::Arc;
 use theme::ThemeRegistry;
@@ -18,9 +16,10 @@ fn init_logger() {
 }
 
 pub fn test_app_state(cx: &mut MutableAppContext) -> Arc<AppState> {
+    let settings = Settings::test(cx);
     let mut path_openers = Vec::new();
     editor::init(cx, &mut path_openers);
-    let (settings_tx, settings) = watch::channel_with(Settings::test(cx));
+    cx.add_app_state(settings);
     let themes = ThemeRegistry::new(Assets, cx.font_cache().clone());
     let http = FakeHttpClient::with_404_response();
     let client = Client::new(http.clone());
@@ -35,8 +34,6 @@ pub fn test_app_state(cx: &mut MutableAppContext) -> Arc<AppState> {
         Some(tree_sitter_rust::language()),
     )));
     Arc::new(AppState {
-        settings_tx: Arc::new(Mutex::new(settings_tx)),
-        settings,
         themes,
         languages: Arc::new(languages),
         channel_list: cx.add_model(|cx| ChannelList::new(user_store.clone(), client.clone(), cx)),
diff --git a/crates/zed/src/zed.rs b/crates/zed/src/zed.rs
index acf480a21d76af25309336e94c917ef666c4e375..6734464f79207eed7cb7c27c36f56e2d14a3a123 100644
--- a/crates/zed/src/zed.rs
+++ b/crates/zed/src/zed.rs
@@ -23,7 +23,7 @@ pub use project::{self, fs};
 use project_panel::ProjectPanel;
 use std::{path::PathBuf, sync::Arc};
 pub use workspace;
-use workspace::{AppState, Workspace, WorkspaceParams};
+use workspace::{AppState, Settings, Workspace, WorkspaceParams};
 
 action!(About);
 action!(Quit);
@@ -42,11 +42,12 @@ lazy_static! {
 pub fn init(app_state: &Arc<AppState>, cx: &mut gpui::MutableAppContext) {
     cx.add_global_action(quit);
     cx.add_global_action({
-        let settings_tx = app_state.settings_tx.clone();
-        move |action: &AdjustBufferFontSize, _| {
-            let mut settings_tx = settings_tx.lock();
-            let new_size = (settings_tx.borrow().buffer_font_size + action.0).max(MIN_FONT_SIZE);
-            settings_tx.borrow_mut().buffer_font_size = new_size;
+        move |action: &AdjustBufferFontSize, cx| {
+            cx.update_app_state::<Settings, _, _>(|settings, cx| {
+                settings.buffer_font_size =
+                    (settings.buffer_font_size + action.0).max(MIN_FONT_SIZE);
+                cx.refresh_windows();
+            });
         }
     });
 
@@ -89,7 +90,6 @@ pub fn build_workspace(
         client: app_state.client.clone(),
         fs: app_state.fs.clone(),
         languages: app_state.languages.clone(),
-        settings: app_state.settings.clone(),
         user_store: app_state.user_store.clone(),
         channel_list: app_state.channel_list.clone(),
         path_openers: app_state.path_openers.clone(),
@@ -98,7 +98,7 @@ pub fn build_workspace(
     let project = workspace.project().clone();
     workspace.left_sidebar_mut().add_item(
         "icons/folder-tree-16.svg",
-        ProjectPanel::new(project, app_state.settings.clone(), cx).into(),
+        ProjectPanel::new(project, cx).into(),
     );
     workspace.right_sidebar_mut().add_item(
         "icons/user-16.svg",
@@ -108,35 +108,18 @@ pub fn build_workspace(
     workspace.right_sidebar_mut().add_item(
         "icons/comment-16.svg",
         cx.add_view(|cx| {
-            ChatPanel::new(
-                app_state.client.clone(),
-                app_state.channel_list.clone(),
-                app_state.settings.clone(),
-                cx,
-            )
+            ChatPanel::new(app_state.client.clone(), app_state.channel_list.clone(), cx)
         })
         .into(),
     );
 
-    let diagnostic_message =
-        cx.add_view(|_| editor::items::DiagnosticMessage::new(app_state.settings.clone()));
-    let diagnostic_summary = cx.add_view(|cx| {
-        diagnostics::items::DiagnosticSummary::new(
-            workspace.project(),
-            app_state.settings.clone(),
-            cx,
-        )
-    });
+    let diagnostic_message = cx.add_view(|_| editor::items::DiagnosticMessage::new());
+    let diagnostic_summary =
+        cx.add_view(|cx| diagnostics::items::DiagnosticSummary::new(workspace.project(), cx));
     let lsp_status = cx.add_view(|cx| {
-        workspace::lsp_status::LspStatus::new(
-            workspace.project(),
-            app_state.languages.clone(),
-            app_state.settings.clone(),
-            cx,
-        )
+        workspace::lsp_status::LspStatus::new(workspace.project(), app_state.languages.clone(), cx)
     });
-    let cursor_position =
-        cx.add_view(|_| editor::items::CursorPosition::new(app_state.settings.clone()));
+    let cursor_position = cx.add_view(|_| editor::items::CursorPosition::new());
     workspace.status_bar().update(cx, |status_bar, cx| {
         status_bar.add_left_item(diagnostic_summary, cx);
         status_bar.add_left_item(diagnostic_message, cx);