diff --git a/pkgs/os-specific/darwin/ios-cross/default.nix b/pkgs/os-specific/darwin/ios-cross/default.nix
index 01753a5300b7..7de7d291289f 100644
--- a/pkgs/os-specific/darwin/ios-cross/default.nix
+++ b/pkgs/os-specific/darwin/ios-cross/default.nix
@@ -45,7 +45,7 @@
     '';
   };
 in {
-  cc = runCommand "${prefix}-cc" {} ''
+  cc = runCommand "${prefix}-cc" { passthru = { inherit sdkType sdkVer sdk; }; } ''
     mkdir -p $out/bin
     ln -sv ${wrapper}/bin/clang $out/bin/${prefix}-cc
     mkdir -p $out/nix-support