anchor.diff: -{ stdenv, fetchFromGitHub, libxslt, libaio, systemd, perl, perlPackages }:
  +{ stdenv, fetchFromGitHub, libxslt, libaio, systemd, perl, perlPackages
  +, docbook_xsl }:
   
   let
     version = "1.0.60";
  
positive.code:     license = stdenv.lib.licenses.gpl2;
      platforms = stdenv.lib.platforms.linux;
    };
  }
negative.code:     sha256 = "1bf8rn3mavjrzkp5k23akqn5ilw43g8mpfr68z1bi8s9lr2gkf37";
    };
  
    buildInputs = [ libxslt systemd libaio docbook_xsl ];
  
    DESTDIR = "$(out)";
    PREFIX = "/";
  