{ lib, pkgs, config, ...}: let
  inherit (lib) mkIf mkEnableOption mkOption;
  cfg = config.chuj.stuff.vim;
  user = config.chuj.system.user;
in {
  options.chuj.stuff.vim = {
    enable = mkEnableOption "vim";
  };
  
  config = mkIf cfg.enable {
    environment.systemPackages = [ pkgs.vim ];

    home-manager.users.${user} = {
      home.sessionVariables = { "EDITOR" = "vim"; };
      # fixme: not .vim
      home.file = { ".vim/colors/darcula.vim".source = ../../files/darcula.vim; };
      programs.vim = {
        enable = true;
        defaultEditor = true;
        plugins = [
          pkgs.vimPlugins.indentLine
          pkgs.vimPlugins.vim-gitgutter
        ];
        settings = let
          vimCache = "${config.home-manager.users.${user}.xdg.cacheHome}/vim";
        in {
          background = "dark";
          backupdir = [ "${vimCache}/backup/" ];
          copyindent = false;
          directory = [ "${vimCache}/swap/" ];
          expandtab = true;
          hidden = false;
          history = 420;
          ignorecase = false;
          modeline = true;
          mouse = "a";
          mousefocus = false;
          mousehide = false;
          mousemodel = "popup_setpos";
          number = true;
          relativenumber = true;
          shiftwidth = 4;
          smartcase = false;
          tabstop = 4;
          undodir = [ "${vimCache}/undo/" ];
          undofile = false;
        };
        extraConfig = ''
          set updatetime=100
          set signcolumn=yes
          set termguicolors
          set cursorline
          colorscheme darcula
          let g:indentLine_char = '▏'
          let g:c_no_ansi = 1
          let g:c_functions = 1
          let g:c_no_c99 = 1
          let g:c_no_bsd = 1
          let g:c_no_c11 = 1
          let g:c_gnu = 1
        '';
      };
    };

    programs.nano.enable = false;
  };
}