Merge pull request #10164 from hercules-ci/objc-workaround

package.nix: Apply OBJC_DISABLE_INITIALIZE_FORK_SAFETY workaround

package.nix

@@ -349,9 +349,15 @@ in {
 
  # Needed for tests if we are not doing a build, but testing existing
  # built Nix.
- preInstallCheck = lib.optionalString (! doBuild) ''
- mkdir -p src/nix-channel
- '';
+ preInstallCheck =
+ lib.optionalString (! doBuild) ''
+ mkdir -p src/nix-channel
+ ''
+ # See https://github.com/NixOS/nix/issues/2523
+ # Occurs often in tests since https://github.com/NixOS/nix/pull/9900
+ + lib.optionalString stdenv.hostPlatform.isDarwin ''
+ export OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES
+ '';
 
  separateDebugInfo = !stdenv.hostPlatform.isStatic;