logilab-constraint: move to python-modules

pkgs/development/python-modules/logilab/constraint.nix

···
+{ stdenv, buildPythonPackage, fetchPypi, logilab_common, six }:
+
+buildPythonPackage rec {
+  pname = "logilab-constraint";
+  version = "0.6.0";
+  name = "${pname}-${version}";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1n0xim4ij1n4yvyqqvyc0wllhjs22szglsd5av0j8k2qmck4njcg";
+  };
+
+  propagatedBuildInputs = [
+    logilab_common six
+  ];
+
+
+  meta = with stdenv.lib; {
+    description = "logilab-database provides some classes to make unified access to different";
+    homepage = "http://www.logilab.org/project/logilab-database";
+  };
+}
+

pkgs/top-level/python-packages.nix

···
     propagatedBuildInputs = with self; [ unittest2 six ];
   };
 
-  logilab-constraint = buildPythonPackage rec {
-    name = "logilab-constraint-${version}";
-    version = "0.6.0";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/l/logilab-constraint/${name}.tar.gz";
-      sha256 = "1n0xim4ij1n4yvyqqvyc0wllhjs22szglsd5av0j8k2qmck4njcg";
-    };
-
-    propagatedBuildInputs = with self; [
-      logilab_common six
-    ];
-
-    meta = with stdenv.lib; {
-      description = "logilab-database provides some classes to make unified access to different";
-      homepage = "http://www.logilab.org/project/logilab-database";
-    };
-  };
-
+  logilab-constraint = callPackage ../development/python-modules/logilab/constraint.nix {};
 
   lxml = buildPythonPackage ( rec {
     name = "lxml-3.8.0";