On Fri, Apr 19, 2019 at 04:35:54PM -0400, John Florian wrote: > I'm generally familiar with how systemd presets work but I'm at a > bit of loss as to how part of all the magic works. To best explain > my confusion, let me say that I make a customized live spin of > Fedora and I have a package we'll call "my-dist" which is similar in > nature to the "fedora-release" package in that it provides a custom > preset file. I still use fedora-release because this spin is not > *that* customized, so it's best to think of this as an extension. I > have another package we'll call "my-service" which has a systemd > service unit file and all the usual %systemd_post, etc. macros. > When I boot my live spin I find that my-service is not enabled > despite the preset in my-dist. I can "systemctl preset-all" to > rectify this so I believe most requirements are correct. I do see > that livemedia-creator installs my-service *before* it installs > my-dist so if the %systemd_post is called as each rpm is installed > that would explain my problem because my custom preset isn't present > yet. > > How does Fedora itself accomplish this??? I don't see every package > providing a service having a dependency on fedora-release to address > this ordering issue. I can certainly stick the "systemctl > preset-all" into the %post of my kickstart as final cleanup, but > that feels dirty and wrong. Similarly, I don't wish to have to have > a "Requires: my-dist" in every one of "my-service" and other > packages like it. I've scrutinized fedora-release.spec and didn't > see anything all that different than what I have in my-dist. systemd.rpm does preset-all when it is installed, so it is enough that systemd.rpm is installed after fedora-release-common.rpm. fedora-release-common is required by setup.rpm, so it is installed early. But you raise a good point — I don't see any *explicit* ordering chain between fedora-release-common and systemd. There is no need to order individual rpms against either fedora-release-common and other packages providing presets or systemd. The only thing that is necessary is for systemd.rpm to be installed after all presets. If that is satisfied, packages proving services can be installed both earlier and later and the effect (in the sense of service enablement) should be identical. Zbyszek _______________________________________________ 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
