anchor.diff: -{ stdenv, fetchFromGitHub, zfs, mbuffer, perl, perlPackages, wget, autoconf, automake }:
  +{ stdenv, fetchFromGitHub, fetchurl, zfs, mbuffer, perl, perlPackages, wget, autoconf, automake }:
   
   let
  +  Mojolicious-6-46 = perlPackages.buildPerlPackage rec {
  +    name = "Mojolicious-6.46";
  +    src = fetchurl {
  +      url = "mirror://cpan/authors/id/S/SR/SRI/${name}.tar.gz";
  +      sha256 = "0i3axmx4506fx5gms148pj65x6ys7flaz1aqjd8hd9zfkd8pzdfr";
  +    };
  +  };
  +  MojoIOLoopForkCall-0-17 = perlPackages.buildPerlModule rec {
  +    name = "Mojo-IOLoop-ForkCall-0.17";
  +    src = fetchurl {
  +      url = "mirror://cpan/authors/id/J/JB/JBERGER/${name}.tar.gz";
  +      sha256 = "090qxz1nbah2qxvfg4whl6yp6q03qkx7a42751iai521nk1yavc8";
  +    };
  +    propagatedBuildInputs = [ perlPackages.IOPipely Mojolicious-6-46 ];
  +  };
  +
     version = "0.18.0";
     checksum = "1nlvw56viwgafma506slywfg54z6009jmzc9q6wljgr6mqfmmchd";
   in
  
positive.code:     substituteInPlace $out/bin/znapzend --replace "${perl}/bin/perl" \
        "${perl}/bin/perl \
        -I${perlPackages.TestHarness}/${perl.libPrefix} \
        -I${perlPackages.Mojolicious}/${perl.libPrefix} \
        -I${perlPackages.TAPParserSourceHandlerpgTAP}/${perl.libPrefix} \
        -I${perlPackages.MojoIOLoopForkCall}/${perl.libPrefix} \
        -I${perlPackages.IOPipely}/${perl.libPrefix} \
        "
      substituteInPlace $out/bin/znapzendzetup --replace "${perl}/bin/perl" \
        "${perl}/bin/perl \
        -I${perlPackages.TestHarness}/${perl.libPrefix} \
        -I${perlPackages.Mojolicious}/${perl.libPrefix} \
        -I${perlPackages.TAPParserSourceHandlerpgTAP}/${perl.libPrefix} \
        -I${perlPackages.MojoIOLoopForkCall}/${perl.libPrefix} \
        -I${perlPackages.IOPipely}/${perl.libPrefix} \
        "
      substituteInPlace $out/bin/znapzendztatz --replace "${perl}/bin/perl" \
        "${perl}/bin/perl \
        -I${perlPackages.TestHarness}/${perl.libPrefix} \
        -I${perlPackages.Mojolicious}/${perl.libPrefix} \
        -I${perlPackages.TAPParserSourceHandlerpgTAP}/${perl.libPrefix} \
        -I${perlPackages.MojoIOLoopForkCall}/${perl.libPrefix} \
        -I${perlPackages.IOPipely}/${perl.libPrefix} \
        "
    '';
  
negative.code:     sha256 = checksum;
    };
  
    buildInputs = [ wget perl perlPackages.TestHarness MojoIOLoopForkCall-0-17 perlPackages.TAPParserSourceHandlerpgTAP ];
  
    nativeBuildInputs = [ autoconf automake ];
  
  