anchor.diff:      rm -rf "$TMP/bin"
     '';
   
  +  passthru.tests = {
  +    inherit (nixosTests) sympa;
  +  };
  +
     meta = with stdenv.lib; {
       description = "Open source mailing list manager";
       homepage = "https://www.sympa.org";
  
positive.code: in
  stdenv.mkDerivation rec {
    pname = "sympa";
    version = "6.2.52";
  
    src = fetchFromGitHub {
      owner = "sympa-community";
      repo = pname;
      rev = version;
      sha256 = "071kx6ryifs2f6fhfky9g297frzp5584kn444af1vb2imzydsbnh";
    };
  
    configureFlags = [
  
negative.code: { stdenv, perl, fetchFromGitHub, autoreconfHook, nixosTests }:
  
  let
    dataDir = "/var/lib/sympa";
  