anchor.diff:      curl
       expat
       openssl
  -    pcre
  +    pcre2
       zlib
     ];
   
  
positive.code:   src = fetchurl {
      urls = map (n: "${n}.xz") tarballUrls;
      hashOutput = false;
      sha256 = "371a592a52d240a6350d4ec6b63cd8301e1fab6dd03388a339a8c7429305afda";
    };
  
    patches = [
  
negative.code:     gnused
    ];
  
    version = "2.14.0";
  
    tarballUrls = [
      "mirror://kernel/software/scm/git/git-${version}.tar"
  