anchor.diff:      zlib
       zstd
     ];
  +
  +  postPatch = ''
  +    grep -q 'attr/xattr.h' cmd_migrate.c
  +    sed -i 's,attr/xattr.h,sys/xattr.h,' cmd_migrate.c
  +  '';
   
     preBuild = ''
       makeFlagsArray+=(
  
positive.code:   };
  
    buildInputs = [
      attr
      keyutils
      libaio
      libnih
  
negative.code: { stdenv
  , fetchzip
  
  , keyutils
  , libaio
  , libnih
  