@grawity actually i tell people usually to just implement the proto on their own, its trivial and documented. In particular non-C projects really should use something native rather than wrap libsystemd.
Interestingly, libsystemd in git main doesn't pull in liblzma anymore, as we turned all compression deps into dlopen ones.
Also note that libselinux also pulls in liblzma and libselinux is pulled in by about everything... In particular via libpam.
