anchor.diff:      noCC = false;
       dontBuild = false;
       buildInputs = with self; [ headers ];
  -    extraPaths = with self; [ common.src libc.src sys.src ];
  +    extraPaths = with self; [ common libc.src sys.src ];
     };
   
     libresolv = mkDerivation {
  
positive.code:     '';
  
      meta.platforms = lib.platforms.netbsd;
      extraPaths = with self; [ common.src ];
  
      installPhase = "includesPhase";
      dontBuild = true;
  
negative.code:     version = "8.0";
      sha256 = "078qsi4mg1hyyxr1awvjs9b0c2gicg3zw4vl603g1m9vm8gfxw9l";
      meta.platforms = lib.platforms.netbsd;
      extraPaths = with self; [ common libc.src ];
      postPatch = ''
        sed -i 's,/usr\(/include/sys/syscall.h\),${self.headers}\1,g' \
          $BSDSRCDIR/lib/{libc,librt}/sys/Makefile.inc
  