buildRustCrate: Set target_os to "macos" on darwin

The rust compiler uses "macos" as "target_os" conditional on Mac OS[1] [1] https://github.com/rust-lang/rust/blob/8e7a609e635b728eba65d471c985ab462dc4cfc7/src/librustc_back/target/x86_64_apple_darwin.rs#L29
NixOS · Feb 23, 2018 · bdf031d · bdf031d
1 parent eb05f92
commit bdf031d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pkgs/build-support/rust/build-rust-crate.nix b/pkgs/build-support/rust/build-rust-crate.nix
@@ -98,7 +98,7 @@ let makeDeps = dependencies:
       export CARGO_PKG_AUTHORS="${authors}"
 
       export CARGO_CFG_TARGET_ARCH=${buildPlatform.parsed.cpu.name}
-      export CARGO_CFG_TARGET_OS=${buildPlatform.parsed.kernel.name}
+      export CARGO_CFG_TARGET_OS=${if buildPlatform.isDarwin then "macos" else buildPlatform.parsed.kernel.name}
       export CARGO_CFG_TARGET_FAMILY="unix"
       export CARGO_CFG_UNIX=1
       export CARGO_CFG_TARGET_ENV="gnu"