{ ... }:

{
  nixpkgs = {
    overlays = [
      (self: super: {
        kitty = super.kitty.overrideAttrs (old: {
          preCheck = ''
            # skip failing tests due to darwin sandbox
            substituteInPlace kitty_tests/file_transmission.py \
              --replace test_file_get dont_test_file_get \
              --replace test_path_mapping_receive dont_test_path_mapping_receive \
              --replace test_transfer_send dont_test_transfer_send
            substituteInPlace kitty_tests/shell_integration.py \
              --replace test_fish_integration dont_test_fish_integration
            substituteInPlace kitty_tests/shell_integration.py \
              --replace test_bash_integration dont_test_bash_integration
            substituteInPlace kitty_tests/open_actions.py \
              --replace test_parsing_of_open_actions dont_test_parsing_of_open_actions
            substituteInPlace kitty_tests/ssh.py \
              --replace test_ssh_connection_data dont_test_ssh_connection_data
            substituteInPlace kitty_tests/fonts.py \
              --replace 'class Rendering(BaseTest)' 'class Rendering'

            # TODO(emile): figure out why this test is failing and activate it
            # again.
            substituteInPlace kittens/hyperlinked_grep/main_test.go \
              --replace TestRgArgParsing DontTestRgArgParsing \

            # theme collection test starts an http server
            rm tools/themes/collection_test.go
            # passwd_test tries to exec /usr/bin/dscl
            rm tools/utils/passwd_test.go
          '';
        });

        # helix-2303 = self.callPackage ../../pkgs/helix-2303 { };
        # r2 = self.callPackage ../../pkgs/radare2-5.8.4 { };
        # ansel = self.callPackage ../../pkgs/ansel { };
        # typst = self.callPackage ../pkgs/radare2-5.8.4 { };
      })
    ];
    config = {
      allowUnfree = true;
      allowBroken = true;
    };
  };
}