BOS opts in to bakery's system prefix so desktop apps live on @
and ride snapper/grub-btrfs snapshots. The builder home stays
~/.local; build-local.sh copies bins, share/data, and user units
onto the image. Per-user installed.json and the index cache stay
in skel. Recovery is still grub-btrfs, not snapper rollback.
Best practice for the long-running bread daemon: ship an enabled user unit in
skel (~/.config/systemd/user/breadd.service + default.target.wants symlink)
instead of a bare Hyprland exec-once. Gives crash-restart, journald logging
(journalctl --user -u breadd), and proper lifecycle.
- ExecStart uses %h so it works for any account created from skel (not a
hardcoded home).
- RuntimeDirectoryPreserve=yes so restarting breadd doesn't wipe the shared
theme.css that bread-theme writes into /run/user/<uid>/bread.
- hyprland.lua: replace the `breadd` exec-once with a Wayland-env import
(dbus-update-activation-environment) + `systemctl --user restart breadd`, so
the service — which autostarts at login before Hyprland exists — picks up
HYPRLAND_INSTANCE_SIGNATURE and can drive the compositor.
