diff --git a/pkgs/by-name/rc/rcu/package.nix b/pkgs/by-name/rc/rcu/package.nix
index ea319d0d8b19..d792eee00af3 100644
--- a/pkgs/by-name/rc/rcu/package.nix
+++ b/pkgs/by-name/rc/rcu/package.nix
@@ -27,6 +27,7 @@ python3Packages.buildPythonApplication rec {
   in runCommand "${src-tarball.name}-unpacked" {} ''
     gunzip -ck ${src-tarball} | tar -xvf-
     mv rcu $out
+    ln -s ${src-tarball} $out/src
   '';
 
   patches = [