anchor.diff:  , yasm, libGLU, libGL, sqlite, unzip, makeWrapper
   , hunspell, libevent, libstartup_notification
   , libvpx_1_8
  -, icu69, libpng, jemalloc, glib, pciutils
  +, icu69, libpng, glib, pciutils
   , autoconf213, which, gnused, rustPackages, rustPackages_1_45
   , rust-cbindgen, nodejs, nasm, fetchpatch
   , gnum4
  
positive.code:   ++ lib.optional  gssSupport libkrb5
    ++ lib.optionals waylandSupport [ libxkbcommon libdrm ]
    ++ lib.optional  pipewireSupport pipewire
    ++ lib.optional  (lib.versionAtLeast version "82") gnum4
    ++ lib.optionals buildStdenv.isDarwin [ CoreMedia ExceptionHandling Kerberos
                                            AVFoundation MediaToolbox CoreLocation
  
negative.code:   ++ flag alsaSupport "alsa"
    ++ flag pulseaudioSupport "pulseaudio"
    ++ flag ffmpegSupport "ffmpeg"
    ++ flag jemallocSupport "jemalloc"
    ++ flag gssSupport "negotiateauth"
    ++ flag webrtcSupport "webrtc"
    ++ flag crashreporterSupport "crashreporter"
  