anchor.diff:        ocamlPackages.xmlm ocamlPackages.ocaml_pcre
         ocamlPackages.camomile
         ocamlPackages.fdkaac
  -      ocamlPackages.srt ocamlPackages.sedlex menhir menhirLib
  +      srt ocamlPackages.sedlex menhir menhirLib
       ];
   
     hardeningDisable = [ "format" "fortify" ];
  
positive.code: 
  # Liquidsoap 1.4.2 is not compatible with menhir ≥ 20220210
  # Locally override menhir to an earlier version
  let menhirLib = ocamlPackages.menhirLib.overrideAttrs (o: rec {
      version = "20211128";
      src = fetchFromGitLab {
        domain = "gitlab.inria.fr";
  
negative.code: { lib, stdenv, makeWrapper, fetchurl, which, pkg-config
  , fetchFromGitLab
  , fetchFromGitHub
  , ocamlPackages
  , libao, portaudio, alsa-lib, libpulseaudio, libjack2
  , libsamplerate, libmad, taglib, lame, libogg
  