python3Packages.krb5: init at 0.6.0

This causes pyspnego to get this krb5 package instead of the top-level
system krb5 package. That's actually intentional because pyspnego's
current dependency on the system package is incorrect.

pkgs/development/python-modules/krb5/default.nix

@@ -0,0 +1,46 @@
+{
+  lib,
+  buildPythonPackage,
+  cython,
+  fetchPypi,
+  k5test,
+  krb5-c, # C krb5 library
+  pytestCheckHook,
+  pythonOlder,
+  setuptools,
+}:
+
+buildPythonPackage rec {
+  pname = "krb5";
+  version = "0.6.0";
+  pyproject = true;
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-cSugkvvjoo7BiCC7Gx7SzBA3t1xccDP5cMaoyXu9Egk=";
+  };
+
+  build-system = [
+    cython
+    setuptools
+  ];
+
+  nativeBuildInputs = [ krb5-c ];
+
+  nativeCheckInputs = [
+    k5test
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "krb5" ];
+
+  meta = with lib; {
+    changelog = "https://github.com/jborean93/pykrb5/blob/v${version}/CHANGELOG.md";
+    description = "Kerberos API bindings for Python";
+    homepage = "https://github.com/jborean93/pykrb5";
+    license = licenses.mit;
+    maintainers = teams.deshaw.members;
+  };
+}

pkgs/top-level/python-packages.nix

@@ -6686,6 +6686,10 @@ self: super: with self; {
 
   krakenex = callPackage ../development/python-modules/krakenex { };
 
+  krb5 = callPackage ../development/python-modules/krb5 {
+    krb5-c = pkgs.krb5;
+  };
+
   krfzf-py = callPackage ../development/python-modules/krfzf-py { };
 
   kserve = callPackage ../development/python-modules/kserve { };