anchor.diff: -{ stdenv, perl, fetchFromGitHub, autoreconfHook
  -}:
  +{ stdenv, perl, fetchFromGitHub, autoreconfHook, nixosTests }:
   
   let
     dataDir = "/var/lib/sympa";
  
positive.code:     rm -rf "$TMP/bin"
    '';
  
    meta = with stdenv.lib; {
      description = "Open source mailing list manager";
      homepage = "https://www.sympa.org";
  
negative.code: in
  stdenv.mkDerivation rec {
    pname = "sympa";
    version = "6.2.54";
  
    src = fetchFromGitHub {
      owner = "sympa-community";
      repo = pname;
      rev = version;
      sha256 = "07wfvr8rrg7pwkl2zglrdri7n42rl9gwrjbaffb8m37wq67s7fca";
    };
  
    configureFlags = [
  