{ config, pkgs, lib, ... }:
let cfg = config.my.home.zsh;
in {
  options.my.home.zsh = with lib; {
    enable = mkEnableOption "zsh configuration";
  };

  config = lib.mkIf cfg.enable {
    home.packages = with pkgs; [ zsh-completions ];

    programs.zsh = {
      enable = true;
      dotDir = ".config/zsh";
      enableCompletion = true;

      history = {
        size = 500000;
        save = 500000;
        extended = false;
        ignoreSpace = true;
        ignoreDups = true;
        share = false;
        path = "${config.xdg.dataHome}/zsh/zsh_history";
      };

      localVariables = {
        # Print timing statistics for everything which takes longer than 5 seconds of
        # user + system time.
        REPORTTIME = 5;
      };

      defaultKeymap = "emacs";
      initExtra = lib.concatMapStrings builtins.readFile [
        ./completion-style.zsh
        ./options.zsh
        ./prompt.zsh
      ];

    };
    programs.dircolors = { enable = true; };
  };
}