[arch-general] Wavpack support in Sox

Having recently migrated from Ubuntu, I notice that while Ubuntu's Sox package didn't support encoding to mp3, it did support Wavpack encoding and decoding, whereas in Arch, it supports mp3 encoding, but Wavpack seems to be unsupported. Am I missing an add-on that will make Sox support Wavpack, or do I need to rebuild the package with Wavpack support? ~Kyle