Put tracy dependency behind feature tracy (#44277)

It broke CI, now it no longer does 🎉 Proper fix followes after the
weekend.

Release Notes:

- N/A

Cargo.toml

@@ -699,7 +699,6 @@ tree-sitter-rust = "0.24"
 tree-sitter-typescript = { git = "https://github.com/zed-industries/tree-sitter-typescript", rev = "e2c53597d6a5d9cf7bbe8dccde576fe1e46c5899" } # https://github.com/tree-sitter/tree-sitter-typescript/pull/347
 tree-sitter-yaml = { git = "https://github.com/zed-industries/tree-sitter-yaml", rev = "baff0b51c64ef6a1fb1f8390f3ad6015b83ec13a" }
 tracing = "0.1.40"
-tracing-tracy = "0.11.4"
 unicase = "2.6"
 unicode-script = "0.5.7"
 unicode-segmentation = "1.10"

crates/zed/Cargo.toml

@@ -10,6 +10,9 @@ authors = ["Zed Team <hi@zed.dev>"]
 [lints]
 workspace = true
 
+[features]
+tracy = ["ztracing/tracy"]
+
 [[bin]]
 name = "zed"
 path = "src/zed-main.rs"

crates/ztracing/Cargo.toml

@@ -8,10 +8,13 @@ license = "GPL-3.0-or-later"
 [lints]
 workspace = true
 
+[features]
+tracy = ["tracing-tracy"]
+
 [dependencies]
 tracing.workspace = true
 
 tracing-subscriber = "0.3.22"
-tracing-tracy = { workspace = true, features = ["enable", "ondemand"] }
+tracing-tracy = { version = "0.11.4", optional = true, features = ["enable", "ondemand"] }
 
 ztracing_macro.workspace = true

docs/src/performance.md

@@ -28,7 +28,7 @@ fn should_appear_in_profile(kitty: Cat) {
 }
 ```
 
-Then either compile Zed with `ZTRACING=1 cargo r --release`. The release build is optional but highly recommended as like every program Zeds performance characteristics change dramatically with optimizations. You do not want to chase slowdowns that do not exist in release.
+Then either compile Zed with `ZTRACING=1 cargo r --features tracy --release`. The release build is optional but highly recommended as like every program Zeds performance characteristics change dramatically with optimizations. You do not want to chase slowdowns that do not exist in release.
 
 ## One time Setup/Building the profiler: