anchor.diff:  }:
   
   let
  -  version = "2.0.13";
  +  version = "2.0.14";
   
     tarballUrls = version: [
       "mirror://gnu/guile/guile-${version}.tar.xz"
  
positive.code:   src = fetchurl {
      urls = tarballUrls version;
      hashOutput = false;
      sha256 = "3744f2addc282a0de627aaef048f062982b44564d54ac31ff5217972529ed88b";
    };
  
    nativeBuildInputs = [
  
negative.code:   passthru = {
      srcVerification = fetchurl rec {
        failEarly = true;
        urls = tarballUrls "2.0.14";
        pgpsigUrls = map (n: "${n}.sig") urls;
        pgpKeyFingerprints = [
          "FF47 8FB2 64DE 32EC 2967  25A3 DDC0 F535 8812 F8F2"
          "3CE4 6455 8A84 FDC6 9DB4  0CFB 090B 1199 3D9A EBB5"
        ];
        inherit (src) outputHashAlgo;
        outputHash = "e8442566256e1be14e51fc18839cd799b966bc5b16c6a1d7a7c35155a8619d82";
      };
    };
  
  