anchor.diff:  
     programs.zsh.variables.cfg = "$HOME/.config/nixpkgs/darwin/configuration.nix";
     programs.zsh.variables.darwin = "$HOME/.nix-defexpr/darwin";
  -  programs.zsh.variables.pkgs = "$HOME/.nix-defexpr/nixpkgs";
  +  programs.zsh.variables.nixpkgs = "$HOME/.nix-defexpr/nixpkgs";
   
   
     programs.zsh.promptInit = ''
  
positive.code: 
    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"
  
      # 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"
  
      # 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"
  
      # 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"
  
      # remap left-control x       -> forward delete
      lctrl - x         [Safari]      :   khd -p "- delete"
  
      # remap left-control g       -> escape
      lctrl - g         [Safari]      :   khd -p "0x35"
  
  
      # modifier only mappings
      khd mod_trigger_timeout 0.2
      lctrl    :   khd -p "0x35"
      lshift   :   khd -p "shift - 9"
      rshift   :   khd -p "shift - 0"
  
  
      # set border color for different modes
  
negative.code: 
    environment.variables.FZF_DEFAULT_COMMAND = "ag -l -f -g ''";
    environment.variables.SHELLCHECK_OPTS = "-e SC1008";
    environment.variables.LC_CTYPE = "UTF-8";
  
    environment.shellAliases.g = "git log --pretty=color -32";
    environment.shellAliases.gb = "git branch";
  