anchor.diff:      "-Dwasapi2=disabled" # not packaged in nixpkgs as of writing / no Windows support
       "-Dwpe=disabled" # required `wpe-webkit` library not packaged in nixpkgs as of writing
       "-Dzxing=disabled" # required `zxing-cpp` library not packaged in nixpkgs as of writing
  +    "-Dgs=disabled" # depends on `google-cloud-cpp`
  +    "-Disac=disabled" # depends on `webrtc-audio-coding-1` not packaged in nixpkgs as of writing
  +    "-Donnx=disabled" # depends on `libonnxruntime` not packaged in nixpkgs as of writing
  +    "-Dopenaptx=disabled" # depends on older version of `libopenaptx` due to licensing conflict https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2235
     ]
     ++ lib.optionals (!stdenv.isLinux) [
       "-Dva=disabled" # see comment on `libva` in `buildInputs`
  
positive.code:     "-Ddts=disabled" # required `libdca` library not packaged in nixpkgs as of writing, and marked as "BIG FAT WARNING: libdca is still in early development"
      "-Dzbar=${if enableZbar then "enabled" else "disabled"}"
      "-Dfaac=${if faacSupport then "enabled" else "disabled"}"
      "-Diqa=disabled" # required `dssim` library not packaging in nixpkgs as of writing
      "-Dmagicleap=disabled" # required `ml_audio` library not packaged in nixpkgs as of writing
      "-Dmsdk=disabled" # not packaged in nixpkgs as of writing / no Windows support
      # As of writing, with `libmpcdec` in `buildInputs` we get
  
negative.code:     libGLU
      libgme
      openssl
      libxml2
      libintl
      srt
  