See https://gitlab.com/fedora/ostree/sig/-/issues/62 for the investigation: > According to [mandb(8)](https://man7.org/linux/man-pages/man8/mandb.8.html#FILES), the index is stored in `/var/cache/man/` which can not be updated as part of the image. > >The `man-db` package includes a systemd unit that can be used to update the index but it's not enabled by default and only started from a [transfiletriggerin](https://src.fedoraproject.org/rpms/man-db/blob/rawhide/f/man-db.spec#_159) which will not work when building the image: >``` >$ rpm -ql man-db | grep systemd >/usr/lib/systemd/system/man-db-cache-update.service >/usr/lib/systemd/system/man-db-restart-cache-update.service >``` > >There is another sub package that we don't ship and that includes a daily cronjob config which would be ignored as we don't ship a cronjob runner. > >Potential options: >- update that unit and use it to rebuild the index at boot time, or 5 minutes after boot. >- move the index somewhere in `/usr` and teach rpm-ostree/bootc to update it after the transaction or update the package to use a post-trans without a systemd unit in the rpm-ostree case. Note that will not be able to update the index for man pages installed in `/usr/local/` (as that's in `/var`) so that may not be ideal. This also likely impacts all bootc images but likely went unnoticed as the man pages are stripped from the image.