anchor.diff:  }:
   
   let
  -  version = "4.24";
  +  version = "4.25";
   in
   stdenv.mkDerivation rec {
     name = "strace-${version}";
  
positive.code:   passthru = {
      srcVerification = fetchurl {
        failEarly = true;
        pgpsigUrls = map (n: "${n}.asc") src.urls;
        pgpKeyFingerprint = "296D 6F29 A020 808E 8717  A884 2DB5 BD89 A340 AEB7";
        inherit (src) urls outputHash outputHashAlgo;
      };
    };
  
  
negative.code:   src = fetchurl {
      url = "https://github.com/strace/strace/releases/download/v${version}/${name}.tar.xz";
      hashOutput = false;
      sha256 = "d685f8e65470b7832c3aff60c57ab4459f26ff89f07c10f92bd70ee89efac701";
    };
  
    nativeBuildInputs = [
  