anchor.diff:        pkgs.jq
         pkgs.fd
         pkgs.rustup
  +      pkgs.fasd
         my-neovim
       ];
   
  
positive.code: 
        # vim undo dir
        mkdir -p $HOME/.vim/undodir
      '';
    };
    programs.nix-index.enable = true;
  
negative.code:     "$HOME/.npm/bin"
    ];
  
    environment.variables = {
      EDITOR = "nvim";
      FZFZ_RECENT_DIRS_TOOL = "fasd";
    };
  
    environment.postBuild = ''
    '';
  