Packages must not enable units themselves: the Arch default preset is
"disable *", and a user unit cannot be enabled from a pacman transaction
anyway, which runs as root without the user's session bus.
Source package for https://github.com/Felitendo/bt-volume-step: a daemon that
corrects the coarse internal volume grid of Bluetooth audio devices on
PipeWire. Nothing is compiled; the upstream Makefile installs the script and
a systemd user unit.
Felitendo