pythonPackages.mathics: refactor move to python-modules

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

@@ -0,0 +1,50 @@
+{ stdenv
+, buildPythonPackage
+, fetchFromGitHub
+, django
+, python
+, cython
+, sympy
+, ply
+, mpmath
+, dateutil
+, colorama
+, six
+, pexpect
+}:
+
+if (stdenv.lib.versionOlder django.version "1.8") ||
+   (stdenv.lib.versionAtLeast django.version "1.9")
+   then throw "mathics only supports django-1.8.x"
+   else buildPythonPackage rec {
+  pname = "mathics";
+  version = "0.9";
+
+  src = fetchFromGitHub {
+    owner = "mathics";
+    repo = "Mathics";
+    rev = "v${version}";
+    sha256 = "0xzz7j8xskj5y6as178mjmm0i2xbhd4q4mwmdnvghpd2aqq3qx1c";
+  };
+
+  buildInputs = [ pexpect ];
+
+  prePatch = ''
+    substituteInPlace setup.py --replace "sympy==0.7.6" "sympy"
+  '';
+
+  postFixup = ''
+    wrapPythonProgramsIn $out/bin $out
+    patchPythonScript $out/${python.sitePackages}/mathics/manage.py
+  '';
+
+  propagatedBuildInputs = [ cython sympy django ply mpmath dateutil colorama six ];
+
+  meta = with stdenv.lib; {
+    description = "A general-purpose computer algebra system";
+    homepage = http://www.mathics.org;
+    license = licenses.gpl3;
+    maintainers = [ maintainers.benley ];
+  };
+
+}