pythonPackages.pynac: refactor move to python-modules

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

···
+{ stdenv
+, buildPythonPackage
+, fetchurl
+}:
+
+buildPythonPackage rec {
+  pname = "pynac";
+  version = "0.2";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/project/pynac/pynac/pynac-0.2/pynac-0.2.tar.gz";
+    sha256 = "0avzqqcxl54karjmla9jbsyid98mva36lxahwmrsx5h40ys2ggxp";
+  };
+
+  meta = with stdenv.lib; {
+    homepage = https://github.com/se-esss-litterbox/Pynac;
+    description = "A Python wrapper around the Dynac charged particle simulator";
+    license = licenses.gpl3;
+  };
+
+}

pkgs/top-level/python-packages.nix

···
 
   pydenticon = callPackage ../development/python-modules/pydenticon { };
 
-  pynac = buildPythonPackage rec {
-    name = "pynac-${version}";
-    version = "0.2";
-
-    src = pkgs.fetchurl {
-      url = "mirror://sourceforge/project/pynac/pynac/pynac-0.2/pynac-0.2.tar.gz";
-      sha256 = "0avzqqcxl54karjmla9jbsyid98mva36lxahwmrsx5h40ys2ggxp";
-    };
-
-    propagatedBuildInputs = with self; [];
-  };
+  pynac = callPackage ../development/python-modules/pynac { };
 
   pybindgen = callPackage ../development/python-modules/pybindgen {};