python.pkgs.passlib: move to own file

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

@@ -0,0 +1,25 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, nose
+, bcrypt
+}:
+
+buildPythonPackage rec {
+  pname = "passlib";
+  version = "1.6.5";
+  name    = "${pname}-${version}";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1z27wdxs5rj5xhhqfzvzn3yg682irkxw6dcs5jj7mcf97psk8gd8";
+  };
+
+  checkInputs = [ nose ];
+  propagatedBuildInputs = [ bcrypt ];
+
+  meta = {
+    description = "A password hashing library for Python";
+    homepage    = https://code.google.com/p/passlib/;
+  };
+}

pkgs/top-level/python-packages.nix

@@ -7195,23 +7195,7 @@ in {
     };
   };
 
-  passlib = buildPythonPackage rec {
+  passlib = callPackage ../development/python-modules/passlib { };
-    version = "1.6.5";
-    name    = "passlib-${version}";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/p/passlib/passlib-${version}.tar.gz";
-      sha256 = "1z27wdxs5rj5xhhqfzvzn3yg682irkxw6dcs5jj7mcf97psk8gd8";
-    };
-
-    buildInputs = with self; [ nose ];
-    propagatedBuildInputs = with self; [ bcrypt ];
-
-    meta = {
-      description = "A password hashing library for Python";
-      homepage    = https://code.google.com/p/passlib/;
-    };
-  };
 
   path-and-address = buildPythonPackage rec {
     version = "2.0.1";