anchor.diff:  { stdenv
  -, fetchFromGitHub
  +, fetchFromGitLab
   , meson
   , ninja
   , pkgconfig
  
positive.code:   buildInputs = [
      SDL2
      alsaLib
      dbus
      ffmpeg
      glib
      gst_all_1.gst-plugins-base
      gst_all_1.gstreamer
      libjack2
      libva
      sbc
      udev
      xorg.libX11
    ];
  
    mesonFlags = [
      "-Ddocs=true"
      "-Dgstreamer=enabled"
    ];
  
    PKG_CONFIG_SYSTEMD_SYSTEMDUSERUNITDIR = "${placeholder "out"}/lib/systemd/user";
  
    FONTCONFIG_FILE = fontsConf; # Fontconfig error: Cannot load default config file
  
  
negative.code: in
  stdenv.mkDerivation rec {
    pname = "pipewire";
    version = "0.3.1";
  
    outputs = [ "out" "lib" "dev" "doc" ];
  
    src = fetchFromGitLab {
      domain = "gitlab.freedesktop.org";
      owner = "pipewire";
      repo = "pipewire";
      rev = version;
      sha256 = "DfUgXTSSCl+JszFEKwBha67nauQi4noR25m00auXDnA=";
    };
  
    nativeBuildInputs = [
  