anchor.diff:  }:
   
   let
  -  version = "2.2.2";
  +  version = "2.2.3";
   
     tarballUrls = version: [
       "mirror://gnu/guile/guile-${version}.tar.xz"
  
positive.code:   src = fetchurl {
      urls = tarballUrls version;
      hashOutput = false;
      sha256 = "1c91a46197fb1adeba4fd62a25efcf3621c6450be166d7a7062ef6ca7e11f5ab";
    };
  
    nativeBuildInputs = [
  
negative.code:   passthru = {
      srcVerification = fetchurl rec {
        failEarly = true;
        urls = tarballUrls "2.2.3";
        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"
          "4FD4 D288 D445 934E 0A14  F9A5 A880 3732 E443 6885"
        ];
        inherit (src) outputHashAlgo;
        outputHash = "8353a8849cd7aa77be66af04bd6bf7a6207440d2f8722e46672232bb9f0a4086";
      };
    };
  
  