python.pkgs.greenlet: move expression

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

@@ -0,0 +1,31 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, six
+, isPyPy
+}:
+
+
+buildPythonPackage rec {
+  pname = "greenlet";
+  version = "0.4.10";
+  disabled = isPyPy;  # builtin for pypy
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "c4417624aa88380cdf0fe110a8a6e0dbcc26f80887197fe5df0427dfa348ae62";
+  };
+
+  propagatedBuildInputs = [ six ];
+
+  # see https://github.com/python-greenlet/greenlet/issues/85
+  preCheck = ''
+    rm tests/test_leaks.py
+  '';
+
+  meta = {
+    homepage = https://pypi.python.org/pypi/greenlet;
+    description = "Module for lightweight in-process concurrent programming";
+    license = lib.licenses.lgpl2;
+  };
+}

pkgs/top-level/python-packages.nix

@@ -6236,30 +6236,7 @@ in {
 
   grammalecte = callPackage ../development/python-modules/grammalecte { };
 
-  greenlet = buildPythonPackage rec {
+  greenlet = callPackage ../development/python-modules/greenlet { };
-    name = "greenlet-${version}";
-    version = "0.4.10";
-    disabled = isPyPy;  # builtin for pypy
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/g/greenlet/${name}.tar.gz";
-      sha256 = "c4417624aa88380cdf0fe110a8a6e0dbcc26f80887197fe5df0427dfa348ae62";
-    };
-
-    propagatedBuildInputs = with self; [ six ];
-
-    # see https://github.com/python-greenlet/greenlet/issues/85
-    preCheck = ''
-      rm tests/test_leaks.py
-    '';
-
-    meta = {
-      homepage = https://pypi.python.org/pypi/greenlet;
-      description = "Module for lightweight in-process concurrent programming";
-      license     = licenses.lgpl2;
-      platforms   = platforms.all;
-    };
-  };
 
   grib-api = disabledIf (!isPy27) (toPythonModule
     (pkgs.grib-api.override {