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{
  config,
  lib,
  shell_library,
  system,
  ...
}: let
  cfg = config.soispha.programs.zsh;
  homeConfig = config.home-manager.users.soispha;

  sourceFile = path: "source ${path}\n";
in {
  options.soispha.programs.zsh = {
    enable = lib.mkEnableOption "zsh";
  };

  config.home-manager.users.soispha = lib.mkIf cfg.enable {
    home.sessionPath = [];

    programs.zsh = {
      enable = true;
      enableCompletion = true;
      autosuggestion = {
        enable = true;
        strategy = [];
      };
      syntaxHighlighting.enable = true;

      autocd = true;

      # Must be relative to the users home directory (for whatever reason)
      # Thus no `${homeConfig.xdg.configHome}`
      dotDir = ".config/zsh";

      # TODO: Remove the whole history and replace it completely with `atuin` <2024-10-21>
      history = {
        path = "/dev/null";
        # save = 0; # number of lines to save
        # size = 0; # number of lines to keep
        # share = false; # share between sessions
      };

      loginExtra =
        # bash
        ''
          setopt AUTO_CD
          setopt AUTO_PUSHD
          setopt CHASE_DOTS

          setopt ALWAYS_TO_END

          setopt EXTENDED_HISTORY
          setopt HIST_ALLOW_CLOBBER
          setopt HIST_VERIFY
          setopt HIST_FCNTL_LOCK
          setopt APPEND_HISTORY

          setopt DVORAK
          setopt CORRECT

          setopt PROMPT_SUBST
          setopt TRANSIENT_RPROMPT # maybe?

          setopt COMBINING_CHARS
          setopt VI
        '';

      initExtraFirst =
        sourceFile ./config/zsh-init.zsh
        + ''
          SHELL_LIBRARY_VERSION="2.1.2" source ${shell_library.rawLib.${system}}
        '';

      initExtra = let
        start = lib.modules.mkBefore (
          # NOTE: This must be before the insult, as we otherwise override the previous handler <2024-02-28>
          sourceFile ./config/command_not_found/command_not_found.sh
          + sourceFile ./config/command_not_found/command_not_found_insult.sh
          + sourceFile ./config/custom_cursor.zsh
          + sourceFile ./config/edit_command_line.zsh
          + sourceFile ./plugins/zsh-history-substring-search.zsh
        );
        end = lib.modules.mkAfter (
          sourceFile ./config/keymaps_start.zsh
          + sourceFile ./config/keymaps/command.zsh
          + sourceFile ./config/keymaps/emacs.zsh
          + sourceFile ./config/keymaps/isearch.zsh
          + sourceFile ./config/keymaps/vicmd.zsh
          + sourceFile ./config/keymaps/viins.zsh
          + sourceFile ./config/keymaps/viopp.zsh
          + sourceFile ./config/keymaps/visual.zsh
          + sourceFile ./config/keymaps_end.zsh
        );
      in
        lib.modules.mkMerge
        [
          start
          end
        ];

      localVariables = {
        HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND = "bg=cyan,fg=white";
        HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND = "fg=red,underline,standout,bold";
      };

      shellAliases = {
        ll = ". ll";
        lm = ". lm";
      };
    };
  };
}