diff --git a/pkgs/games/steam/update-runtime-shell.nix b/pkgs/games/steam/update-runtime-shell.nix
new file mode 100644
index 00000000000..bb9362b9bf0
--- /dev/null
+++ b/pkgs/games/steam/update-runtime-shell.nix
@@ -0,0 +1,13 @@
+with import <nixpkgs> {};
+
+(python2.buildEnv.override {
+  extraLibs = with python2Packages;
+    [ debian
+    ];
+  postBuild = ''
+    mkdir -p $out/bin
+    for i in ${nixUnstable}/bin/*; do
+      ln -s $i $out/bin/$(basename $i)
+    done
+  '';
+}).env