diff --git a/pkgs/build-support/buildenv/default.nix b/pkgs/build-support/buildenv/default.nix
index 5261e9b5a264..5bcc1708e7fd 100644
--- a/pkgs/build-support/buildenv/default.nix
+++ b/pkgs/build-support/buildenv/default.nix
@@ -38,7 +38,7 @@
 }:
 
 runCommand name
-  { inherit manifest ignoreCollisions passthru pathsToLink extraPrefix postBuild buildInputs;
+  rec { inherit manifest ignoreCollisions passthru pathsToLink extraPrefix postBuild buildInputs;
     pkgs = builtins.toJSON (map (drv: {
       paths =
         [ drv ]