users/seth/programs/vim.nix


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{
  config,
  lib,
  pkgs,
  ...
}:
let
  cfg = config.seth.programs.vim;
  inherit (config.xdg) configHome dataHome stateHome;
in
{
  options.seth.programs.vim = {
    enable = lib.mkEnableOption "Vim configuration" // {
      default = config.seth.enable;
    };
  };

  config = lib.mkIf cfg.enable {
    programs.vim = {
      enable = true;
      packageConfigurable = pkgs.vim;

      settings = {
        expandtab = false;
        shiftwidth = 2;
        tabstop = 2;
      };

      extraConfig = ''
        " https://wiki.archlinux.org/title/XDG_Base_Directory
        set runtimepath^=${configHome}/vim
        set runtimepath+=${dataHome}/vim
        set runtimepath+=${configHome}/vim/after

        set packpath^=${dataHome}/vim,${configHome}/vim
        set packpath+=${configHome}/vim/after,${dataHome}/vim/after
        set packpath^=${dataHome}/vim,${configHome}/vim
        set packpath+=${configHome}/vim/after,${dataHome}/vim/after

        let g:netrw_home = "${dataHome}/vim"
        call mkdir("${dataHome}/vim/spell", 'p')

        set backupdir=${stateHome}/vim/backup | call mkdir(&backupdir, 'p')
        set directory=${stateHome}/vim/swap   | call mkdir(&directory, 'p')
        set undodir=${stateHome}/vim/undo     | call mkdir(&undodir,   'p')
        set viewdir=${stateHome}/vim/view     | call mkdir(&viewdir,   'p')
        set viminfofile=${stateHome}/vim/viminfo
      '';
    };
  };
}