anchor.diff:    '';
   
     meta = with stdenv.lib; {
  -    homepage = https://pgp-tools.alioth.debian.org/;
  +    homepage = https://salsa.debian.org/debian/signing-party;
       description = "A collection of several projects relating to OpenPGP";
       longDescription = ''
         This is a collection of several projects relating to OpenPGP.
  
positive.code:   # Perl is required for it's pod2man.
    # Python and Perl are required for patching the script interpreter paths.
    nativeBuildInputs = [ autoconf automake makeWrapper ];
    buildInputs = [ python perl perlPackages.GnuPGInterface libmd gnupg1 ];
  
    postInstall = ''
      # Install all tools which aren't handled by 'make install'.
  
negative.code: { stdenv, fetchurl, autoconf, automake, makeWrapper
  , python3, perl, perlPackages
  , libmd, gnupg1, which, getopt, libpaper, nettools, qprint
  , sendmailPath ? "/run/wrappers/bin/sendmail" }:
  
  let
    # All runtime dependencies from the CPAN graph:
    # https://widgets.stratopan.com/wheel?q=GnuPG-Interface-0.52&runtime=1&fs=1
    GnuPGInterfaceRuntimeDependencies = with perlPackages; [
      strictures ClassMethodModifiers DataPerl DevelGlobalDestruction ExporterTiny
      GnuPGInterface ListMoreUtils ModuleRuntime Moo MooXHandlesVia MooXlate
  