diff --git a/pkgs/build-support/src-only/default.nix b/pkgs/build-support/src-only/default.nix
index 143166cfadd7..b4e373cd058e 100644
--- a/pkgs/build-support/src-only/default.nix
+++ b/pkgs/build-support/src-only/default.nix
@@ -15,5 +15,7 @@ in
 stdenv.mkDerivation (args // {
   name = "${name}-source";
   installPhase = "cp -r . $out";
+  outputs = [ "out" ];
+  separateDebugInfo = false;
   phases = ["unpackPhase" "patchPhase" "installPhase"];
 })