anchor.diff:      srt
       vo-aacenc
       libfreeaptx
  +    zxing-cpp
     ] ++ lib.optionals enableZbar [
       zbar
     ] ++ lib.optionals faacSupport [
  
positive.code: , srt
  , vo-aacenc
  , libfreeaptx
  , VideoToolbox
  , AudioToolbox
  , AVFoundation
  
negative.code:     "-Dwasapi=disabled" # not packaged in nixpkgs as of writing / no Windows support
      "-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
      "-Disac=disabled" # depends on `webrtc-audio-coding-1` not compatible with 0.3
      "-Dgs=disabled" # depends on `google-cloud-cpp`
      "-Donnx=disabled" # depends on `libonnxruntime` not packaged in nixpkgs as of writing
  