diff --git a/pkgs/misc/emulators/cdemu/gui.nix b/pkgs/misc/emulators/cdemu/gui.nix
index 13ca367734c..04930a5e573 100644
--- a/pkgs/misc/emulators/cdemu/gui.nix
+++ b/pkgs/misc/emulators/cdemu/gui.nix
@@ -1,9 +1,11 @@
-{ callPackage, python, pygobject3, gtk3, glib, libnotify, intltool, makeWrapper, gobjectIntrospection, gnome3, gdk_pixbuf, librsvg }:
-let pkg = import ./base.nix {
-  version = "3.0.1";
-  pkgName = "gcdemu";
-  pkgSha256 = "1dlng1bvhns7f0ff5p89npsm2nznfqnaspr0alfh4fl0f11cvnfr";
-};
+{ callPackage, pythonPackages, gtk3, glib, libnotify, intltool, makeWrapper, gobjectIntrospection, gnome3, gdk_pixbuf, librsvg }:
+let
+  pkg = import ./base.nix {
+    version = "3.0.1";
+    pkgName = "gcdemu";
+    pkgSha256 = "1dlng1bvhns7f0ff5p89npsm2nznfqnaspr0alfh4fl0f11cvnfr";
+  };
+  inherit (pythonPackages) python pygobject3;
 in callPackage pkg {
   buildInputs = [ python pygobject3 gtk3 glib libnotify intltool makeWrapper
                   gnome3.defaultIconTheme gdk_pixbuf librsvg ];