pythonPackages.pycallgraph: refactor move to python-modules

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

@@ -0,0 +1,28 @@
+{ stdenv
+, buildPythonPackage
+, fetchPypi
+, pytest
+}:
+
+buildPythonPackage rec {
+  pname = "pycallgraph";
+  version = "1.0.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0w8yr43scnckqcv5nbyd2dq4kpv74ai856lsdsf8iniik07jn9mi";
+  };
+
+  buildInputs = [ pytest ];
+
+  # Tests do not work due to this bug: https://github.com/gak/pycallgraph/issues/118
+  doCheck = false;
+
+  meta = with stdenv.lib; {
+    homepage = http://pycallgraph.slowchop.com;
+    description = "Call graph visualizations for Python applications";
+    maintainers = with maintainers; [ auntie ];
+    license = licenses.gpl2;
+  };
+
+}