anchor.diff:  
           setopt HIST_IGNORE_DUPS SHARE_HISTORY HIST_FCNTL_LOCK
   
  +        export PATH=${config.environment.systemPath}''${PATH:+:$PATH}
  +        typeset -U PATH
  +
           ${config.system.build.setEnvironment}
           ${config.system.build.setAliases}
   
  
positive.code: 
        environment.shellAliases.l = "ls -lh";
        environment.shellAliases.ls = "ls -G";
        environment.shellAliases.tmux = "${pkgs.tmux}/bin/tmux";
        environment.shellAliases.zsh = "${pkgs.zsh}/bin/zsh";
  
        environment.etc."tmux.conf".text = ''
          ${config.programs.tmux.config}
  
negative.code:           serviceConfig.ProcessType = "Background";
          };
  
        programs.tmux.loginShell = "${pkgs.lnl.zsh}/bin/zsh -l";
        programs.tmux.enableSensible = true;
        programs.tmux.enableMouse = true;
        programs.tmux.enableVim = true;
  