anchor.diff:    (if a.lib.attrByPath ["ckSched"] false a then ''
       killOption CONFIG_CPU_CFS
       setOptionYes CONFIG_CPU_BFS
  +    killOption CONFIG_NO_HZ
  +    killOption CONFIG_HZ_1000
  +    setOptionYes CONFIG_HZ_250
  +    setOptionVal CONFIG_HZ 250
     ''else "") +
     ''
       cp .config ${config}
  
positive.code:     setOptionYes () {
        sed -re 's/^# ('"$1"') is not set/\1=y/' -i .config
        sed -re "1i$1=y" -i .config
      }
  
      make allmodconfig
  
negative.code:   features = {
      iwlwifi = true;
      zen = true;
      fbConDecor = true;
    };
  
    extraMeta = {
  