anchor.diff:      gnused
     ];
   
  -  version = "2.18.0";
  +  version = "2.19.0";
   
     tarballUrls = [
       "mirror://kernel/software/scm/git/git-${version}.tar"
  
positive.code:   src = fetchurl {
      urls = map (n: "${n}.xz") tarballUrls;
      hashOutput = false;
      sha256 = "8b40be383a603147ae29337136c00d1c634bdfdc169a30924a024596a7e30e92";
    };
  
    nativeBuildInputs = [
  
negative.code:   passthru = {
      srcVerification = fetchurl {
        failEarly = true;
        inherit (src)
          urls
          outputHash
          outputHashAlgo;
        fullOpts = {
          pgpDecompress = true;
          pgpsigUrls = map (n: "${n}.sign") tarballUrls;
          pgpKeyFingerprint = "96E0 7AF2 5771 9559 80DA  D100 20D0 4E5A 7136 60A7";
        };
      };
    };
  
  