Re: [PATCH] rpm: Fix handling of SOURCE_DATE_EPOCH

On Thu, Oct 29, 2020 at 7:39 AM Daniel P. Berrangé <berrange(a)redhat.com&gt; wrote: > > On Thu, Oct 29, 2020 at 12:27:16PM +0100, Michal Privoznik wrote: > > On 10/28/20 9:47 PM, Neal Gompa wrote: > > > On Wed, Oct 28, 2020 at 7:49 AM Michal Privoznik <mprivozn(a)redhat.com&gt; wrote: > > > > > > > > On 10/27/20 1:06 PM, Neal Gompa wrote: > > > > > On Tue, Oct 27, 2020 at 6:24 AM Michal Privoznik <mprivozn(a)redhat.com&gt; wrote: > > > > > > > > > > > > On 10/26/20 11:08 PM, Neal Gompa wrote: > > > > > > > Contemporary versions of Fedora automatically set SOURCE_DATE_EPOCH > > > > > > > based on the changelog entry date stamp. In scenarios where it already > > > > > > > is defined, we do not want to redefine it. > > > > > > > > > > > > > > > > > > > This part is okay. > > > > > > > > > > > > > Additionally, when building the libvirt package in an Open Build Service > > > > > > > instance, the spec file is not present in %_specdir, but instead in %_sourcedir. > > > > > > > > > > > > > > > > > > > But this looks fishy. Is the %_specdir defined in that case? > > > > > > > > > > > > > > > > It is (that comes from RPM itself), however the directory is empty. > > > > > > > > That feels like a bug in OBS then. IIUC this macro can be specified on > > > > the rpmbuild's cmd line. Can't it set the %_specdir to be the same as > > > > %_sourcedir? > > > > > > > > > > Nothing about RPM mandates that %_specdir is actually *used* for anything. > > > > > > > But this is not the case, is it? %_specdir is defined and points to an > > actual directory. Having said that, I am not against the change, but maybe > > we can document this weirdness somewhere? Also, with the latest specfile > > discussion I'll let Andrea take a look. > RPM internally populates a specfile variable that is the true pointer to the spec file, regardless of path. This is not exposed as a macro despite attempts to do so[1]. There is no rule that the spec file *must* come from %_specdir, and it's really only used for the location to store the specfile when extracting an SRPM. [1]: https://github.com/rpm-software-management/rpm/pull/202 > I'm inclined to just delete all the source epoch stuff from the spec and > rely on the build environment set it if they want reproducable builds. > Considering that RHEL 8 doesn't have the change to turn on SOURCE_DATE_EPOCH[2], I am inclined to keep it.

[2]: https://src.fedoraproject.org/rpms/redhat-rpm-config/c/86aae600e62fadc187...