feature: use posix_spawn on macos (ocaml#8090)

Signed-off-by: Rudi Grinberg <me@rgrinberg.com>
Alizter · Aug 8, 2023 · be9aa28 · be9aa28
1 parent d997dbe
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diff --git a/doc/changes/8090.md b/doc/changes/8090.md
@@ -0,0 +1,2 @@
+- Use `posix_spawn` instead of `fork` on MacOS. This gives us a performance
+  boost and allows us to re-enable thread. (#8090, @rgrinberg)
diff --git a/src/dune_config/config.ml b/src/dune_config/config.ml
@@ -99,7 +99,7 @@ let copy_file =
 
 let background_default =
   match Platform.OS.value with
-  | Linux | Windows -> `Enabled
+  | Linux | Windows | Darwin -> `Enabled
   | _ -> `Disabled
 ;;