pythonPackages.visitor: init at 0.1.3

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

@@ -0,0 +1,18 @@
+{ lib, buildPythonPackage, fetchPypi }:
+
+buildPythonPackage rec {
+  pname = "visitor";
+  version = "0.1.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "02j87v93c50gz68gbgclmbqjcwcr7g7zgvk7c6y4x1mnn81pjwrc";
+  };
+
+  meta = with lib; {
+    homepage = https://github.com/mbr/visitor;
+    description = "A tiny pythonic visitor implementation";
+    license = licenses.mit;
+    maintainers = with maintainers; [ ];
+  };
+}