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

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

@@ -0,0 +1,30 @@
+{ stdenv, buildPythonPackage, fetchFromGitHub, pythonAtLeast
+, flask, nose, mock, blinker}:
+
+buildPythonPackage rec {
+  pname = "Flask-Login";
+  name = "${pname}-${version}";
+  version = "0.4.0";
+
+  src = fetchFromGitHub {
+    owner = "maxcountryman";
+    repo = "flask-login";
+    rev = version;
+    sha256 = "0sjbmk8m4mmd9g99n6c6lx9nv2jwwqp6qsqhl945w2m0f1sknwdh";
+  };
+
+  buildInputs = [ nose mock ];
+  propagatedBuildInputs = [ flask blinker ];
+
+  checkPhase = "nosetests -d";
+
+  doCheck = pythonAtLeast "3.3";
+
+  meta = with stdenv.lib; {
+    homepage = https://github.com/maxcountryman/flask-login;
+    description = "User session management for Flask";
+    license = licenses.mit;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ abbradar ];
+  };
+}