Include prjconf in _buildenv

[bmwiedemann]

When working on reproducible builds for openSUSE, I try to verify that binaries published by OBS, really correspond to the source code using my nachbau script. For that, I grab the old binaries listed in _buildenv into a deps dir and do a osc build -p deps
This regularly breaks when prjconf gets updated in certain ways.
E.g. atm I get unresolvable: nothing provides libpython3_8-1_0 = 3.8.5 needed by python38-base, (got version 3.8.3-4.2)
maybe because

osc meta prjconf openSUSE:Factory
FileProvides: /usr/bin/python3 python38-base

Describe the solution you'd like
I would like to have a way to build with the prjconf used for the old build.
This at least needs a reference to the prjconf revision in _buildenv
and a way to use that revision later.

It could also include a full copy of the old prjconf either in _buildenv or a separate _prjconf .
And if OBS/osc would allow builds with a custom prjconf, that might also be a nice addition for debugging and testing

Describe alternatives you've considered
I could use old revisions from
https://github.com/bmwiedemann/openSUSE/blob/master/packages/_/_project/_config
but so far, finding the right version is not trivial and using it for OBS-resolution is not possible.

[adrianschroeter]

On Dienstag, 18. August 2020, 05:45:03 CEST wrote Bernhard M. Wiedemann:

When working on reproducible builds for openSUSE, I try to verify that binaries published by OBS, really correspond to the source code using my `nachbau` script. For that, I grab the old binaries listed in _buildenv into a `deps` dir and do a `osc build -p deps` This regularly breaks when prjconf gets updated in certain ways.

I would not include it, but add a reference to the version. And we should consider a way to get merged configs (via multiple project pathes) in a versioned way. However, since this is indeed an importent topic, please create a jira request for this. thanks adrian

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-- Adrian Schroeter email: adrian@suse.de SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) Maxfeldstraße 5 90409 Nürnberg Germany

[bmwiedemann]

The other interesting question is then: how do I use the older prjconf for building?

[adrianschroeter]

On Donnerstag, 5. November 2020, 11:31:58 CET Bernhard M. Wiedemann wrote: The other interesting question is then: how do I use the older prjconf for building?

yes, this is just first part for this feature.

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-- Adrian Schroeter <adrian@suse.de> Build Infrastructure Project Manager SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nuernberg, Germany (HRB 247165, AG München), Geschäftsführer: Felix Imendörffer