Use default allocator as a default (#11293)

crates/zed/Cargo.toml

@@ -61,7 +61,7 @@ languages.workspace = true
 log.workspace = true
 markdown_preview.workspace = true
 menu.workspace = true
-mimalloc = "0.1"
+mimalloc = { version = "0.1", optional = true }
 nix = {workspace = true, features = ["pthread"] }
 node_runtime.workspace = true
 notifications.workspace = true

crates/zed/src/main.rs

@@ -24,7 +24,6 @@ use language::LanguageRegistry;
 use log::LevelFilter;
 
 use assets::Assets;
-use mimalloc::MiMalloc;
 use node_runtime::RealNodeRuntime;
 use parking_lot::Mutex;
 use release_channel::AppCommitSha;
@@ -56,8 +55,9 @@ use zed::{
     OpenListener, OpenRequest,
 };
 
+#[cfg(feature = "mimalloc")]
 #[global_allocator]
-static GLOBAL: MiMalloc = MiMalloc;
+static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
 
 fn fail_to_launch(e: anyhow::Error) {
     App::new().run(move |cx| {