On Wed, Jan 12, 2022 at 2:07 AM Zbigniew Jędrzejewski-Szmek <zbyszek@xxxxxxxxx> wrote: > > On Mon, Jan 10, 2022 at 02:53:52PM -0700, Chris Murphy wrote: > > Should /usr be independently portable? And is that with a version > > matched /opt, or can there be mix and match revisions of /usr and > > /opt? > > We have three similar locations: /usr (system vendor tree), > /usr/local (admin non-packages installations), /opt (external vendor tree). > In other words, both /usr and /opt are for packages, but from different > sources. As an admin, you'd want to treat both package types the same, > and e.g. roll them back together. So having a separate tree for /opt > doesn't make much sense. > > [At some point in the future] /opt should be renamed to /usr/opt and > symlinked for backwards compat. I'm not attached to it being moved one way or another. But if there's a need or want for /opt to be truly independent from /usr, the idea of rolling back /usr while keeping /opt current or vice versa, then I'd say the packages wanting to use /opt need to exclusively use /opt and variants like /etc/opt and /var/opt. > > To what degree do rpm and dnf intend to touch locations outside of > > /usr *and care* about tracking those changes? > > Traditionally, packages installed all kinds of files all over the place. > But we're slowly and painfully moving towards the model where: > 1. packages are only allowed to install under /usr, /var, and /etc. > (Or under /opt, but I'd want to move that to /usr/opt…) > 2. packages must support /var/cache being wiped at any time, and > most packages support anything under /var being wiped at any time. > 3. systemd and other projects are trying to only use /etc for local > admin state, and support "factory reset" by wiping /etc and /var. Is /usr/etc something that could be a thing Fedora wide? The way rpm-ostree does it, it's making a copy of /etc and does a three way merge so you get updated config file defaults. But without that logic available, is it bonkers to consider applications learning to look to look first in /etc, and if the config isn't found there to go look in /usr/etc? -- Chris Murphy _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
