alistral: Add shell completions (#474218)

  nix-update-script,

  pkg-config,

  openssl,

  installShellFiles,

  writableTmpDirAsHomeHook,

}:

rustPlatform.buildRustPackage (finalAttrs: {

  nativeBuildInputs = [

    pkg-config

  ]

  ++ lib.optionals (stdenv.buildPlatform.canExecute stdenv.hostPlatform) [

    installShellFiles

    # When invoked in postInstall, alistral tries to write logfiles to its config dir on invocation, and fails if it can't find a writable one.

    # The config dir falls back to a directory relative to $HOME on both Darwin and Linux, so setting a writable $HOME is enough.

    writableTmpDirAsHomeHook

  ];

  buildInputs = [

  passthru.updateScript = nix-update-script { };

  postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''

    installShellCompletion --cmd alistral \

      --bash <($out/bin/alistral --generate bash) \

      --fish <($out/bin/alistral --generate fish) \

      --zsh <($out/bin/alistral --generate zsh)

  '';

  meta = {

    homepage = "https://rustynova016.github.io/Alistral/";

    changelog = "https://github.com/RustyNova016/Alistral/blob/${finalAttrs.src.tag}/CHANGELOG.md";