While updating world, sox-14.4.2_p20210509-r2 wants to install pulseaudio because "pulseaudio" flag is set. The flag has the following description "pulseaudio : Add sound server support via media-libs/libpulse (may be PulseAudio or PipeWire)". I use pipewire and not pulseaudio, an I have media-libs/libpulse installed so I should be ok, however the package depends on media-sound/pulseaudio. Can the dependency be changed to not use media-libs/pulseaudio and use media-libs/libpulse, or am I stuck with having to install pulseaudio?
media-sound/pulseaudio is a metapackage so media-sound/pulseaudio[-daemon] should be fine with pipewire. But yes, it should be updated. It's slowly being phased out.