Instruct macOS users to run `xcodebuild -downloadComponent MetalToolchain` (#37411)

chris and Conrad Irwin created 

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

Closes #ISSUE

Release Notes:

- N/A

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

Change summary

docs/src/development/macos.md | 2 ++
1 file changed, 2 insertions(+)

Detailed changes

docs/src/development/macos.md 🔗 

@@ -69,6 +69,8 @@ xcrun: error: unable to find utility "metal", not a developer tool or in PATH
 
 Try `sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer`
 
+If you're on macOS 26, try `xcodebuild -downloadComponent MetalToolchain`
+
 ### Cargo errors claiming that a dependency is using unstable features
 
 Try `cargo clean` and `cargo build`.