anchor.diff:  
   let
     inherit (stdenv.lib)
  -    enFlag
  -    wtFlag;
  +    boolString
  +    boolWt
  +    optionalString;
  +
  +  # Use stable patch releases, e.g. -9 or -10
  +  version = "7.0.2-10";
   in
   
   assert xorg != null ->
  
positive.code:       "mirror://imagemagick"
      ];
      allowHashOutput = false;
      sha256 = "4a17e54cd6b5f5fd0cea462dbe0cc1b74a91730d08e1d8edc4f539066feac8b8";
    };
  
    buildInputs = [
  
negative.code: 
    passthru = {
      srcVerification = fetchurl {
        inherit (src)
          outputHash
          outputHashAlgo
          urls;
        failEarly = true;
        pgpsigUrls = map (n: "${n}.asc") src.urls;
        pgpKeyFingerprint = "D827 2EF5 1DA2 23E4 D05B  4669 89AB 63D4 8277 377A";
      };
    };
  
  