anchor.diff:  
     services.khd.khdConfig = ''
       # remap left-control h/j/k/l -> arrow keys
  -    lctrl - h         [Safari]      :   khd -p "- left"
  -    lctrl - j         [Safari]      :   khd -p "- down"
  -    lctrl - k         [Safari]      :   khd -p "- up"
  -    lctrl - l         [Safari]      :   khd -p "- right"
  -
  -    shift + lctrl - h [Safari]      :   khd -p "shift - left"
  -    shift + lctrl - j [Safari]      :   khd -p "shift - down"
  -    shift + lctrl - k [Safari]      :   khd -p "shift - up"
  -    shift + lctrl - l [Safari]      :   khd -p "shift - right"
  +    lctrl - h         [Safari]      :   qes -k "- left"
  +    lctrl - j         [Safari]      :   qes -k "- down"
  +    lctrl - k         [Safari]      :   qes -k "- up"
  +    lctrl - l         [Safari]      :   qes -k "- right"
  +
  +    shift + lctrl - h [Safari]      :   qes -k "shift - left"
  +    shift + lctrl - j [Safari]      :   qes -k "shift - down"
  +    shift + lctrl - k [Safari]      :   qes -k "shift - up"
  +    shift + lctrl - l [Safari]      :   qes -k "shift - right"
   
       # remap left-control a / e   -> start / end of line
  -    lctrl - a         [Safari]      :   khd -p "cmd - left"
  -    lctrl - e         [Safari]      :   khd -p "cmd - right"
  -
  -    shift + lctrl - e [Safari]      :   khd -p "shift + cmd - left"
  -    shift + lctrl - e [Safari]      :   khd -p "shift + cmd - right"
  +    lctrl - a         [Safari]      :   qes -k "cmd - left"
  +    lctrl - e         [Safari]      :   qes -k "cmd - right"
  +
  +    shift + lctrl - e [Safari]      :   qes -k "shift + cmd - left"
  +    shift + lctrl - e [Safari]      :   qes -k "shift + cmd - right"
   
       # remap left-control b / w   -> start / end of word
  -    lctrl - b         [Safari]      :   khd -p "alt - left"
  -    lctrl - w         [Safari]      :   khd -p "alt - right"
  -
  -    shift + lctrl - b [Safari]      :   khd -p "shift + alt - left"
  -    shift + lctrl - w [Safari]      :   khd -p "shift + alt - right"
  +    lctrl - b         [Safari]      :   qes -k "alt - left"
  +    lctrl - w         [Safari]      :   qes -k "alt - right"
  +
  +    shift + lctrl - b [Safari]      :   qes -k "shift + alt - left"
  +    shift + lctrl - w [Safari]      :   qes -k "shift + alt - right"
   
       # remap left-control u / d   -> page up / page down
  -    lctrl - u         [Safari]      :   khd -p "alt - up"
  -    lctrl - d         [Safari]      :   khd -p "alt - down"
  -
  -    shift + lctrl - u [Safari]      :   khd -p "shift + alt - up"
  -    shift + lctrl - d [Safari]      :   khd -p "shift + alt - down"
  +    lctrl - u         [Safari]      :   qes -k "alt - up"
  +    lctrl - d         [Safari]      :   qes -k "alt - down"
  +
  +    shift + lctrl - u [Safari]      :   qes -k "shift + alt - up"
  +    shift + lctrl - d [Safari]      :   qes -k "shift + alt - down"
   
       # remap left-control x       -> forward delete
  -    lctrl - x         [Safari]      :   khd -p "- delete"
  +    lctrl - x         [Safari]      :   qes -k "- delete"
   
       # remap left-control g       -> escape
  -    lctrl - g         [Safari]      :   khd -p "0x35"
  +    lctrl - g         [Safari]      :   qes -k "0x35"
   
   
       # modifier only mappings
       khd mod_trigger_timeout 0.2
  -    lctrl    :   khd -p "0x35"
  -    lshift   :   khd -p "shift - 9"
  -    rshift   :   khd -p "shift - 0"
  +    lctrl    :   qes -k "escape"
  +    lshift   :   qes -k "shift - 9"
  +    rshift   :   qes -k "shift - 0"
   
   
       # set border color for different modes
  
positive.code:   '';
  
    programs.zsh.loginShellInit = ''
      n() {
          nix-repl '<nixpkgs/lib>' ''${@:-<nixpkgs>}
      }
  
      hydra-job-revision() {
  
negative.code: 
    programs.zsh.variables.cfg = "$HOME/.config/nixpkgs/darwin/configuration.nix";
    programs.zsh.variables.darwin = "$HOME/.nix-defexpr/darwin";
    programs.zsh.variables.nixpkgs = "$HOME/.nix-defexpr/nixpkgs";
  
  
    programs.zsh.promptInit = ''
  