anchor.diff:  
       srcVerification = fetchurl {
         failEarly = true;
  -      sha256Url = "${baseUrl}/SHA256SUMS";
  -      inherit (src) urls outputHash outputHashAlgo;
  +      inherit (src)
  +        urls
  +        outputHash
  +        outputHashAlgo;
  +      fullOpts = {
  +        sha256Url = "${baseUrl}/SHA256SUMS";
  +      };
       };
     };
   
  
positive.code: }:
  
  let
    version = "3.38";
  
    baseUrl = "https://ftp.mozilla.org/pub/mozilla.org/security/nss/releases"
      + "/NSS_${stdenv.lib.replaceStrings ["."] ["_"] version}_RTM/src";
  
negative.code:   src = fetchurl {
      url = "${baseUrl}/${name}.tar.gz";
      hashOutput = false;
      sha256 = "6be64dd76f212415cc8bc34343ac1e7389048db4db9a023a84873c411dc5864b";
    };
  
    buildInputs = [
  