Stock distcc and earlier distcc-avahi releases ship /etc/conf.d/distccd
with DISTCC_ARGS=, while our distccd.service reads $DISTCC_OPTS. On
hosts that had stock distcc installed first, pacman keeps the existing
conf file (it's marked backup=) so the rename never happens — distccd
starts with empty options, falls back to --allow-private, and warns
about missing /usr/lib/distcc masquerade dir.
Add a post_install/post_upgrade .install hook that:
- detects DISTCC_ARGS= in /etc/conf.d/distccd and renames to DISTCC_OPTS=
(keeping a timestamped backup beside it)
- runs update-distcc-symlinks if /usr/lib/distcc is unpopulated
- prompts the operator to restart distccd if it's already active
Bumps pkgrel to 18.
Hit on ampere 2026-04-29 during fourier-campaign distcc enrollment;
likely lurking on every host with stock-distcc legacy state.
