python.pkgs.cycler: move expression

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

@@ -0,0 +1,37 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, coverage
+, nose
+, six
+, python
+}:
+
+buildPythonPackage rec {
+  pname = "cycler";
+  name = "${pname}-${version}";
+  version = "0.10.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "cd7b2d1018258d7247a71425e9f26463dfb444d411c39569972f4ce586b0c9d8";
+  };
+
+  checkInputs = [ coverage nose ];
+  propagatedBuildInputs = [ six ];
+
+  checkPhase = ''
+    ${python.interpreter} run_tests.py
+  '';
+
+  # Tests were not included in release.
+  # https://github.com/matplotlib/cycler/issues/31
+  doCheck = false;
+
+  meta = {
+    description = "Composable style cycles";
+    homepage = http://github.com/matplotlib/cycler;
+    license = lib.licenses.bsd3;
+    maintainers = with lib.maintainers; [ fridh ];
+  };
+}

pkgs/top-level/python-packages.nix

@@ -1865,33 +1865,7 @@ in {
     };
   };
 
-  cycler = buildPythonPackage rec {
+  cycler = callPackage ../development/python-modules/cycler { };
-    name = "cycler-${version}";
-    version = "0.10.0";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/C/Cycler/${name}.tar.gz";
-      sha256 = "cd7b2d1018258d7247a71425e9f26463dfb444d411c39569972f4ce586b0c9d8";
-    };
-
-    buildInputs = with self; [ coverage nose ];
-    propagatedBuildInputs = with self; [ six ];
-
-    checkPhase = ''
-      ${python.interpreter} run_tests.py
-    '';
-
-    # Tests were not included in release.
-    # https://github.com/matplotlib/cycler/issues/31
-    doCheck = false;
-
-    meta = {
-      description = "Composable style cycles";
-      homepage = http://github.com/matplotlib/cycler;
-      license = licenses.bsd3;
-      maintainers = with maintainers; [ fridh ];
-    };
-  };
 
   datadog = buildPythonPackage rec {
     name = "${pname}-${version}";