Re: To buildroot, or not to buildroot

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On Thu, Oct 7, 2021 at 9:44 AM Troy Dawson <tdawson@xxxxxxxxxx> wrote:
>
>
>
> On Thu, Oct 7, 2021 at 6:28 AM Neal Gompa <ngompa13@xxxxxxxxx> wrote:
>>
>> On Thu, Oct 7, 2021 at 9:24 AM Troy Dawson <tdawson@xxxxxxxxxx> wrote:
>> >
>> >
>> >
>> > On Wed, Oct 6, 2021 at 7:39 PM Neal Gompa <ngompa13@xxxxxxxxx> wrote:
>> >>
>> >> On Wed, Oct 6, 2021 at 3:36 PM Troy Dawson <tdawson@xxxxxxxxxx> wrote:
>> >> >
>> >> > *this is worth a discussion in todays EPEL Steering Committee Meeting*
>> >> >
>> >> > It sounds like the epel9-next is going to startup by building against the CS buildroot.  Changing it at this time would cause a delay.
>> >> >
>> >> > Thus we need to write some "verify build deps are released" checker.  I have an idea of how to do this, so I'm willing to volunteer to write and run something.
>> >> >
>> >> > But, it would be good to have some discussion to determine if we want to keep using the CS buildroot for epel9-next, always.  Or if we want to use it just as a bootstrap mechanism, and then switch to building just off the available CentOS Stream repos at some point.
>> >> >
>> >> > Thoughts?
>> >> > Should we always use buildroot?  Or just keep up until we're fairly stable?
>> >> >
>> >>
>> >> We should only use the buildroot repo for as long as we need to. The
>> >> *sooner* we can switch to the published content, the better.
>> >
>> >
>> > This was discussed at the EPEL Steering Committee meeting.  Here is the summary.
>> > Someone correct me if I'm wrong.
>> >
>> > epel9-next:
>> >  - starts off building off CS buildroot
>> >  - I will write a "check if all build packages are in the normal repos" checker, called "will it build" [1]
>> >
>>
>> How are we going to know whether all the build-time and run-time
>> packages are in the normal repos? We need to check generated
>> dependencies too, especially now that it's possible to have dynamic
>> BuildRequires!
>
>
> run-time dependencies:
> That's always been a problem, even without the buildroot.
> But I will also be writing a "will it install" to go along with "will it build"
>
> build-time dependencies:
> Grab the root.log of the package build, and parse it.
> This gets around any hidden and dynamic BuildRequires.
> I've already written code that does this for Content Resolver, and checked it against traditional dnf/libsolve dependency generation.
> It was 98% equal, and those 2% were on packages where it was possible for more than one package to be installed for a dependency, and for that, I'd prefer going with the root.log.
>
> I think I've got everything I need already written, just in three separate projects.
> I really want to pull that code together and make "willit"
>
>>
>> > epel9:
>> >  - Use normal RHEL 9 repos (AppStream, BaseOS, CRB)
>> >
>> > Checks/Tests/Future:  (It's a little fuzzy on the timing of these)
>> >
>> >  - grobisplitter
>> >  -- see if we really need to use grobisplitter
>> >  -- I'm a little fuzzy on how or when we are going to test this
>> >
>>
>> With the retirement of the container-tools default module,
>> grobisplitter will not be required at all unless we want to use it to
>> support non-default modules.
>
>
> That is the theory, yes, that grobisplitter isn't required.
> But nobody was able to say that was for certain.  Thus, it needs to be tested.
>

I've verified this with my internal build infrastructure, so yes, I
know it's not required.

Admittedly, it's not a Koji system, but I'm also not enabling any
modules in my build environment right now. I'm rebuilding content from
Rawhide targeting CentOS Stream 9 to get a list of initial EPEL 9
packages to build for work, which is how some of my requests to add
stuff to CRB have come about[1][2][3].

This can also be verified when using something like mock with
mock-core-configs v36 or higher, because I made the necessary
adjustments to test building on CentOS Stream 9 the same way that
Fedora Koji and the CentOS CBS would.

[1]: https://gitlab.com/redhat/centos-stream/release-engineering/comps/-/merge_requests/140
[2]: https://gitlab.com/redhat/centos-stream/release-engineering/comps/-/merge_requests/139
[3]: https://gitlab.com/redhat/centos-stream/release-engineering/comps/-/merge_requests/135



-- 
真実はいつも一つ!/ Always, there's only one truth!
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