[
  (final: prev: {
    python3 = prev.python3.override {
      packageOverrides = self: _: {
        loadcredential = self.callPackage ./loadcredential { };
        authens = self.callPackage ./authens { };
        python-cas = self.callPackage ./python-cas { };

        django-autoslug = self.callPackage ./django-autoslug { };
        markdown-icons = self.callPackage ./markdown-icons { };
      };
    };
  })
]