Description
libpulse without any sound daemons over pure ALSA.
apulse (https://github.com/i-rinat/apulse) implements most of libpulse API over pure ALSA in 5% LOC of the original PulseAudio.
But apulse is made to be used as a wrapper that substitutes its replacement libs into LD_LIBRARY_PATH. The problem with that is that you still have to link against the original libpulse.
pressureaudio (http://git.r-36.net/pressureaudio/) wraps apulse with everything you need to replace libpulse completely.
This derivation is a reimplementation of pressureaudio in pure nix.
You can simply override libpulse with this and most packages would just work.