Python: move expressions in python-modules to their own folders

pkgs/development/python-modules/flask-testing/default.nix

@@ -0,0 +1,29 @@
+{ stdenv, fetchPypi, buildPythonPackage, pythonOlder
+, flask, blinker, twill }:
+
+with stdenv.lib;
+
+buildPythonPackage rec {
+  name = "${pname}-${version}";
+  pname = "Flask-Testing";
+  version = "0.6.2";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1w0dpwvrcpffm8ychyxpm8s5blm7slik9kplh9jb3sgwcv9gyppj";
+  };
+
+  postPatch = ''
+    sed -i -e 's/twill==0.9.1/twill/' setup.py
+  '';
+
+  buildInputs = optionals (pythonOlder "3.0") [ twill ];
+  propagatedBuildInputs = [ flask blinker ];
+
+  meta = {
+    description = "Flask unittest integration.";
+    homepage = https://pythonhosted.org/Flask-Testing/;
+    license = licenses.bsd3;
+    maintainers = [ maintainers.mic92 ];
+  };
+}