python.pkgs.pyobjc: init at 4.0b1

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

···
+{ stdenv, fetchPypi, isPy3k, buildPythonPackage }:
+
+buildPythonPackage rec {
+  name = "${pname}-${version}";
+  pname = "pyobjc";
+  version = "4.0b1";
+
+  # Gives "No matching distribution found for
+  # pyobjc-framework-Collaboration==4.0b1 (from pyobjc==4.0b1)"
+  disabled = isPy3k;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "16bng6960c1m57nnh1l09ycnyimrqzw9mx9pnyjxn5zzm5kalr37";
+  };
+
+  meta = {
+    description = "A bridge between the Python and Objective-C programming languages";
+    license = stdenv.lib.licenses.mit;
+    maintainers = with stdenv.lib.maintainers; [ sauyon ];
+    homepage = https://pythonhosted.org/pyobjc/;
+  };
+}

pkgs/top-level/python-packages.nix

···
     };
   };
 
+  pyobjc = if stdenv.isDarwin
+    then callPackage ../development/python-modules/pyobjc {}
+    else throw "pyobjc can only be built on Mac OS";
+
   pyodbc = callPackage ../development/python-modules/pyodbc { };
 
   pyocr = callPackage ../development/python-modules/pyocr { };