Adding "use lxcfs" into files/lxc.initd.3 (in depend()) will activate lxcfs in the case the user has it installed and configured for that runlevel, while not requiring anything for users that don't have it or want it. lxcfs is available as an optional service for lxc/lxd containers, so that guests see guest-specific output from `uptime` and /proc/cpuinfo, among other things. lxcfs is developed by the same upstream as lxc/lxd, and integrates with both those products automatically. lxd has "use lxcfs" in its init script: https://gitweb.gentoo.org/repo/gentoo.git/tree/app-emulation/lxd/files/lxd-0.27.initd#n13 Presumably there is an equivalent "use lxcfs" for the systemd unit file. Thanks. Let me know if you have any questions.
Resolved in 2.0.1 for both openrc and systemd scripts.