nix-community.nixvim/plugins/by-name/gitgutter/default.nix

{
  lib,
  pkgs,
  ...
}:
let
  inherit (lib.nixvim) defaultNullOpts;
  inherit (lib) types;
in
lib.nixvim.plugins.mkVimPlugin {
  name = "gitgutter";
  packPathName = "vim-gitgutter";
  package = "vim-gitgutter";
  globalPrefix = "gitgutter_";

  maintainers = [ lib.maintainers.GaetanLepage ];

  # TODO introduced 2024-12-16: remove after 25.05
  optionsRenamedToSettings = import ./renamed-options.nix lib;
  imports =
    let
      basePluginPath = [
        "plugins"
        "gitgutter"
      ];
    in
    [
      (lib.mkRemovedOptionModule (
        basePluginPath ++ [ "grep" ]
      ) "Please, use `plugins.gitgutter.grepPackage` and/or `plugins.gitgutter.settings.grep`.")
      (lib.mkRemovedOptionModule (
        basePluginPath
        ++ [
          "signs"
          "modifiedAbove"
        ]
      ) "This option has been removed from upstream")

      # TODO: added 2025-04-06, remove after 25.05
      (lib.nixvim.mkRemovedPackageOptionModule {
        plugin = "gitgutter";
        packageName = "git";
      })
    ];

  extraOptions = {
    recommendedSettings = lib.mkOption {
      type = types.bool;
      default = true;
      description = ''
        Set recommended neovim option.
      '';
    };

    grepPackage = lib.mkPackageOption pkgs "gnugrep" {
      nullable = true;
    };
  };

  extraConfig = cfg: {
    opts = lib.optionalAttrs cfg.recommendedSettings {
      updatetime = 100;
      foldtext = "gitgutter#fold#foldtext";
    };

    dependencies.git.enable = lib.mkDefault true;

    extraPackages = [
      cfg.grepPackage
    ];
  };

  settingsOptions =
    {
      preview_win_location = defaultNullOpts.mkEnumFirstDefault [ "bo" "to" "bel" "abo" ] ''
        This option determines where the preview window pops up as a result of the
        `:GitGutterPreviewHunk` command.

        See the end of the `|opening-window|` docs.
      '';

      git_executable = defaultNullOpts.mkStr' {
        pluginDefault = "git";
        example = lib.literalExpression "lib.getExe pkgs.git";
        description = ''
          This option determines what `git` binary to use.
          Set this if git is not on your path.
        '';
      };

      git_args = defaultNullOpts.mkStr' {
        pluginDefault = "";
        example = ''--gitdir=""'';
        description = ''
          Use this option to pass any extra arguments to `git` when running `git-diff`.
        '';
      };

      diff_args = defaultNullOpts.mkStr' {
        pluginDefault = "";
        example = "-w";
        description = ''
          Use this option to pass any extra arguments to `git-diff`.
        '';
      };

      diff_relative_to = defaultNullOpts.mkStr' {
        pluginDefault = "index";
        example = "working_tree";
        description = ''
          By default buffers are diffed against the index.
          Use this option to diff against the working tree.
        '';
      };

      diff_base = defaultNullOpts.mkStr' {
        pluginDefault = "";
        example = "";
        description = ''
          By default buffers are diffed against the index.
          Use this option to diff against a revision instead.

          If you are looking at a previous version of a file with _Fugitive_ (e.g. via `:0Gclog`),
          gitgutter sets the diff base to the parent of the current revision.

          This setting is ignore when the diff is relative to the working tree (`diff_relative_to`).
        '';
      };

      grep = defaultNullOpts.mkStr' {
        pluginDefault = "grep";
        example = "grep --color=never";
        description = ''
          The plugin pipes the output of `git-diff` into `grep` to minimise the amount of data vim has
          to process.
          Set this option if `grep` is not on your path.

          `grep` must produce plain-text output without any ANSI escape codes or colours.
          Use this option to turn off colours if necessary (`grep --color=never` for example).

          If you do not want to use `grep` at all (perhaps to debug why signs are not showing), set
          this option to an empty string.
        '';
      };

      signs = defaultNullOpts.mkBool true ''
        Determines whether or not to show signs.
      '';

      highlight_lines = defaultNullOpts.mkBool false ''
        Determines whether or not to show line highlights.
      '';

      highlight_linenrs = defaultNullOpts.mkBool false ''
        Determines whether or not to show line number highlights.
      '';

      max_signs = defaultNullOpts.mkInt (-1) ''
        Sets the maximum number of signs to show in a buffer.

        To avoid slowing down the GUI the number of signs can be capped.
        When the number of changed lines exceeds this value, the plugin removes all signs and displays
        a warning message.

        When set to `-1` the limit is not applied.
      '';

      sign_priority = defaultNullOpts.mkUnsignedInt 10 ''
        Sets the `|sign-priority|` gitgutter assigns to its signs.
      '';

      sign_allow_clobber = defaultNullOpts.mkBool true ''
        Determines whether gitgutter preserves non-gitgutter signs.
        When `true`, gitgutter will not preserve non-gitgutter signs.
      '';
    }
    // (lib.mapAttrs'
      (n: default: {
        name = "sign_${n}";
        value = defaultNullOpts.mkStr default ''
          Icon for the _${n}_ sign.

          You can use unicode characters but not images.
          Signs must not take up more than 2 columns.
        '';
      })
      {
        added = "+";
        modified = "~";
        removed = "_";
        removed_first_line = "‾";
        removed_above_and_below = "_¯";
        modified_removed = "~_";
      }
    )
    // {
      set_sign_backgrounds = defaultNullOpts.mkBool false ''
        Only applies to existing `GitGutter*` highlight groups.
        See `|gitgutter-highlights|`.

        Controls whether to override the signs' background colours to match the `|hl-SignColumn|`.
      '';

      preview_win_floating = defaultNullOpts.mkBool true ''
        Whether to use floating/popup windows for hunk previews.

        Note that if you use popup windows on Vim you will not be able to stage partial hunks via
        the preview window.
      '';

      floating_window_options =
        defaultNullOpts.mkAttrsOf types.anything
          {
            relative = "cursor";
            row = 1;
            col = 0;
            width = 42;
            height = "&previewheight";
            style = "minimal";
          }
          ''
            This dictionary is passed directly to `|nvim_open_win()|`.
          '';

      close_preview_on_escape = defaultNullOpts.mkBool false ''
        Whether pressing <Esc> in a preview window closes it.
      '';

      terminal_reports_focus = defaultNullOpts.mkBool true ''
        Normally the plugin uses `|FocusGained|` to force-update all buffers when Vim receives
        focus.
        However some terminals do not report focus events and so the `|FocusGained|` autocommand
        never fires.

        If this applies to you, either install something like
        [Terminus](https://github.com/wincent/terminus) to make `|FocusGained|` work or set this
        option to `false`.

        If you use `tmux`, try this in your tmux.conf:
        ```
        set -g focus-events on
        ```

        When this option is `false`, the plugin force-updates the buffer on `|BufEnter|` (instead of
        only updating if the buffer's contents has changed since the last update).

      '';

      enabled = defaultNullOpts.mkBool true ''
        Controls whether or not the plugin is on at startup.
      '';

      map_keys = defaultNullOpts.mkBool true ''
        Controls whether or not the plugin provides mappings.
        See `|gitgutter-mappings|`.
      '';

      async = defaultNullOpts.mkBool true ''
        Controls whether or not diffs are run in the background.
      '';

      log = defaultNullOpts.mkBool false ''
        When switched on, the plugin logs to `gitgutter.log` in the directory where it is installed.
        Additionally it logs channel activity to `channel.log`.
      '';

      use_location_list = defaultNullOpts.mkBool false ''
        When switched on, the `:GitGutterQuickFix` command populates the location list of the
        current window instead of the global quickfix list.
      '';

      show_msg_on_hunk_jumping = defaultNullOpts.mkBool true ''
        When switched on, a message like "Hunk 4 of 11" is shown on hunk jumping.
      '';
    };

  settingsExample = {
    set_sign_backgrounds = true;
    sign_modified_removed = "*";
    sign_priority = 20;
    preview_win_floating = true;
  };
}