anchor.diff:      chmod 0755 $out/bin/nss-config
     '';
   
  -  postFixup = ''
  +  postFixup = let
  +    isCross = stdenv.hostPlatform != stdenv.buildPlatform;
  +    nss = if isCross then buildPackages.nss.tools else "$out";
  +  in ''
       for libname in freebl3 nssdbm3 softokn3
       do '' +
       (if stdenv.isDarwin
  
positive.code:     "NSS_ENABLE_ECC=1"
      "USE_SYSTEM_ZLIB=1"
      "NSS_USE_SYSTEM_SQLITE=1"
    ] ++ stdenv.lib.optional stdenv.is64bit "USE_64=1"
      ++ stdenv.lib.optional stdenv.isDarwin "CCC=clang++";
  
  
negative.code: { stdenv, fetchurl, nspr, perl, zlib, sqlite, fixDarwinDylibNames, buildPackages }:
  
  let
    nssPEM = fetchurl {
  