pythonPackages.icalendar: refactor move to python-modules

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

@@ -0,0 +1,28 @@
+{ stdenv
+, buildPythonPackage
+, fetchPypi
+, setuptools
+, dateutil
+, pytz
+}:
+
+buildPythonPackage rec {
+  version = "3.9.0";
+  pname = "icalendar";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "93d0b94eab23d08f62962542309916a9681f16de3d5eca1c75497f30f1b07792";
+  };
+
+  buildInputs = [ setuptools ];
+  propagatedBuildInputs = [ dateutil pytz ];
+
+  meta = with stdenv.lib; {
+    description = "A parser/generator of iCalendar files";
+    homepage = "http://icalendar.readthedocs.org/";
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ olcai ];
+  };
+
+}