pythonPackages.xdot: move expression

pkgs/development/python-modules/xdot/default.nix

@@ -0,0 +1,21 @@
+{ lib, buildPythonPackage, fetchPypi
+, wrapGAppsHook, gobjectIntrospection, pygobject3, graphviz, gnome3 }:
+
+buildPythonPackage rec {
+  pname = "xdot";
+  version = "0.9";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "01v9vmgdxz1q2m2vq2b4aqx4ycw7grc0l4is673ygvyg9rk02dx3";
+  };
+
+  nativeBuildInputs = [ wrapGAppsHook ];
+  propagatedBuildInputs = [ gobjectIntrospection pygobject3 graphviz gnome3.gtk ];
+
+  meta = with lib; {
+    description = "xdot.py is an interactive viewer for graphs written in Graphviz's dot";
+    homepage = https://github.com/jrfonseca/xdot.py;
+    license = licenses.lgpl3Plus;
+  };
+}

pkgs/top-level/python-packages.nix

@@ -18320,23 +18320,7 @@ EOF
 
   persistent = callPackage ../development/python-modules/persistent {};
 
-  xdot = buildPythonPackage rec {
-    name = "xdot-0.9";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/x/xdot/${name}.tar.gz";
-      sha256 = "01v9vmgdxz1q2m2vq2b4aqx4ycw7grc0l4is673ygvyg9rk02dx3";
-    };
-
-    nativeBuildInputs = with pkgs; [ wrapGAppsHook ];
-    propagatedBuildInputs = with self; [ pkgs.gobjectIntrospection pygobject3 pkgs.graphviz pkgs.gnome3.gtk ];
-
-    meta = {
-      description = "xdot.py is an interactive viewer for graphs written in Graphviz's dot";
-      homepage = https://github.com/jrfonseca/xdot.py;
-      license = licenses.lgpl3Plus;
-    };
-  };
+  xdot = callPackage ../development/python-modules/xdot { };
 
   zetup = callPackage ../development/python-modules/zetup { };