anchor.diff:  
     services.khd.enable = true;
     services.kwm.enable = true;
  +  services.skhd.enable = true;
   
     launchd.user.agents.fetch-nixpkgs = {
       command = "${pkgs.git}/bin/git -C ~/.nix-defexpr/nixpkgs fetch origin master";
  
positive.code:     kwmc config split-ratio 0.5
      kwmc config spawn left
  
  
      kwmc config padding 28 0 2 0
      kwmc config gap 4 4
      kwmc config display 1 padding 40 20 20 20
      kwmc config display 1 gap 10 10
      kwmc config display 2 padding 40 20 20 20
      kwmc config display 2 gap 10 10
  
      kwmc config space 0 1 name main
      kwmc config space 0 2 name rnd
      kwmc config space 0 2 mode monocle
      kwmc config space 0 3 name web
      kwmc config space 1 1 name dev
      kwmc config space 1 1 mode monocle
      kwmc config space 2 1 name var
  
  
      kwmc config focus-follows-mouse on
      kwmc config mouse-follows-focus on
      kwmc config standby-on-float on
      kwmc config center-on-float on
      kwmc config float-non-resizable on
      kwmc config lock-to-container on
      kwmc config cycle-focus on
      kwmc config optimal-ratio 1.605
  
      kwmc config border focused on
      kwmc config border focused size 2
      kwmc config border focused color 0x00000000
      kwmc config border focused radius 6
  
      kwmc config border marked on
      kwmc config border marked size 2
      kwmc config border marked color 0xDD7f7f7f
      kwmc config border marked radius 6
  
      kwmc rule owner="Airmail" properties={float="true"}
      kwmc rule owner="Apple Store" properties={float="true"}
      kwmc rule owner="Info" properties={float="true"}
      kwmc rule owner="System Preferences" properties={float="true"}
      kwmc rule owner="iTerm2" properties={role="AXDialog"}
      kwmc rule owner="iTunes" properties={float="true"}
    '';
  
    # You should generally set this to the total number of logical cores in your system.
    # $ sysctl -n hw.ncpu
    nix.maxJobs = 1;
  
negative.code:   '';
  
    services.khd.khdConfig = ''
      # modifier only mappings
      khd mod_trigger_timeout 0.2
      lctrl  : qes -k "escape"
      lshift : qes -t "("
      rshift : qes -t ")"
    '';
  
    services.kwm.kwmConfig = ''
  