anchor.diff:    buildInputs = [
       SDL2
       alsaLib
  +    bluez
       dbus
       ffmpeg
       glib
       gst_all_1.gst-plugins-base
       gst_all_1.gstreamer
       libjack2
  +    libpulseaudio
  +    libsndfile
       libva
       sbc
       udev
  +    vulkan-headers
  +    vulkan-loader
       xorg.libX11
     ];
   
     mesonFlags = [
       "-Ddocs=true"
  -    "-Dgstreamer=enabled"
  +    "-Dman=false" # we don't have xmltoman
  +    "-Dgstreamer=true"
     ];
  -
  -  PKG_CONFIG_SYSTEMD_SYSTEMDUSERUNITDIR = "${placeholder "out"}/lib/systemd/user";
   
     FONTCONFIG_FILE = fontsConf; # Fontconfig error: Cannot load default config file
   
  
positive.code: , xorg
  , sbc
  , SDL2
  , makeFontsConf
  }:
  
  
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 = [
  