anchor.diff:      # is needed, and then patching upstream to find it (though it probably
       # already works on Arch?).
       "-Dmusepack=disabled"
  -    "-Dopenmpt=disabled" # `libopenmpt` not packaged in nixpkgs as of writing
       "-Dopenni2=disabled" # not packaged in nixpkgs as of writing
       "-Dopensles=disabled" # not packaged in nixpkgs as of writing
       "-Dsctp=disabled" # required `usrsctp` library not packaged in nixpkgs as of writing
  
positive.code: , opencv4
  , openexr
  , openh264
  , pango
  , rtmpdump
  , sbc
  
negative.code:     mpeg2dec
      libmicrodns
      openjpeg
      libopenmpt
      libopus
      librsvg
      curl.dev
  