Make Screeps work

overlays/steam.nix

@@ -0,0 +1,20 @@
+# Needed for screeps
+# https://github.com/NixOS/nixpkgs/issues/32881
+self: super:
+{
+  steam = super.steam.override {
+    extraPkgs = super: with super; [
+      gnome3.gtk
+      zlib
+      dbus
+      freetype
+      glib
+      atk
+      cairo
+      gdk_pixbuf
+      pango
+      fontconfig
+      xorg.libxcb
+    ];
+  };
+}