[CentOS-devel] FYI: centos reproduceability
skvidal at fedoraproject.org
Tue Apr 28 21:38:22 UTC 2009
On Tue, 28 Apr 2009, James Olin Oden wrote:
> P.S. Now I did bring up a premise that may not be true, which was that
> the issue is not "Technical" but that it was a RedHat "Process"
> problem. If I'm wrong in that regard, then actually a solution is
> achievable, and one might work on the problem, and not be a RedHat
> employee. I do agree that there are technical things one could do to
> help solve the problem, but its seems to me that the main thing they
> need is an automated rebuild of the world to detect if there is indeed
> a problem with the build being self hostable. I would guess RedHat
> has this capability in their build system, and if they do, it would be
> a decision to use it or not...which is a process issue.
I'm not going to comment on red hat processes b/c I honestly don't know
them and cannot answer for them. I do know a few things about
Fedora's processes for completely rebuilding the distro and since some of
the future rhel processes come out of the fedora processes I think looking
at how a complete rebuild of fedora happens might be the most valuable.
Normally, when fedora is being rebuilt we build on whatever has come
before and what's available and we do it all in mock in build dep order.
Now, those deps are better in fedora 7,8,9,10 and rawhide than it was in
fedora core 6 (what rhel5 was based off of).
We install a publically published set of base pkgs and that's what the
build environment starts with.
then we rebuild the srpm inside the mock chroot from the spec we've made
then we build the package.
The resulting packages are added to the set of repositories that mock can
pull from for future builds.
Then the chroot is cleaned and reinstalled and the build begins for the
next pkg in the chain.
Does that help?
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