anchor.diff: -{pkgs, config, ...}:
  +{ config, pkgs, ... }:
  +
  +with pkgs.lib;
   
   ###### interface
  +
   let
  -  inherit (pkgs.lib) mkOption;
   
     options = {
   
  
positive.code:           pkgs.xorg.fontmiscmisc
            pkgs.xorg.fontcursormisc
          ]
          ++ pkgs.lib.optional config.fonts.enableCoreFonts pkgs.corefonts
          ++ pkgs.lib.optional config.fonts.enableGhostscriptFonts "${pkgs.ghostscript}/share/ghostscript/fonts"
          ++ config.fonts.extraFonts;
        };
  
  
negative.code:         ";
        };
  
        # Should be moved elsewhere.
        enableGhostscriptFonts = mkOption {
          default = false;
          description = "
  