Hey Germano, I have a working RPM that does not error out with Error! Could not locate dkms.conf file if you want to test it out before I push it to copr. https://copr-be.cloud.fedoraproject.org/results/jdoss/wireguard-testing/fedora-29-x86_64/00852015-wireguard-dkms/wireguard-dkms-0.0.20190123-2.fc29.noarch.rpm It is an issue with DKMS as I suspected. `%post` runs before the new package's `%preun` and the --rpm_safe_upgrade isn't working as it should. https://github.com/dell/dkms/issues/25#issuecomment-360275619. I followed this post's suggestion and moved from %post to %posttrans and this issue no longer happens. It feels hacky and I might spend some more time this weekend trying to find a better solution. ZFS worked around it with a bunch of bash https://github.com/zfsonlinux/zfs/blob/master/rpm/generic/zfs-dkms.spec.in#L74-L102 so that might be what we try down the road. If anyone on the list has a better idea on how to work around this issue please let me know. _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx