pyprof2calltree: move to python-packages

pyprof2calltree is hard-coded to pythonPackages and fails for Python 3 profile results. See #66511.
Since it can also be used as a library it makes sense to move it into pythonPackages.

pkgs/development/python-modules/pyprof2calltree/default.nix

@@ -0,0 +1,22 @@
+{ lib, buildPythonPackage, fetchFromGitHub }:
+
+buildPythonPackage rec {
+  pname = "pyprof2calltree";
+  version = "1.4.4";
+
+  # Fetch from GitHub because the PyPi packaged version does not
+  # include all test files.
+  src = fetchFromGitHub {
+    owner = "pwaller";
+    repo = "pyprof2calltree";
+    rev = "v" + version;
+    sha256 = "1vrip41ib7nmkwa8rjny1na1wyp7nvvgvm0h9bd21i262kbm4nqx";
+  };
+
+  meta = with lib; {
+    description = "Help visualize profiling data from cProfile with kcachegrind and qcachegrind";
+    homepage = https://pypi.python.org/pypi/pyprof2calltree/;
+    license = licenses.mit;
+    maintainers = with maintainers; [ sfrijters ];
+  };
+}