anchor.diff:      inherit menhirLib menhirSdk;
     };
   
  +  srt = ocamlPackages.srt.overrideAttrs (old: rec {
  +    version = "0.1.1";
  +    src = fetchFromGitHub {
  +      owner = "savonet";
  +      repo = "ocaml-srt";
  +      rev = "v${version}";
  +      sha256 = "0xh89w4j7lljvpy2n08x6m9kw88f82snmzf23kp0gw637sjnrj6f";
  +    };
  +  });
   in
   
   stdenv.mkDerivation {
  
positive.code:       ocamlPackages.xmlm ocamlPackages.ocaml_pcre
        ocamlPackages.camomile
        ocamlPackages.fdkaac
        ocamlPackages.srt ocamlPackages.sedlex menhir menhirLib
      ];
  
    hardeningDisable = [ "format" "fortify" ];
  
negative.code: { lib, stdenv, makeWrapper, fetchurl, which, pkg-config
  , fetchFromGitLab
  , fetchFromGitHub
  , ocamlPackages
  , libao, portaudio, alsa-lib, libpulseaudio, libjack2
  , libsamplerate, libmad, taglib, lame, libogg
  