<zimoun>civodul: do you have some space in Inria for retaining the substitute artificats required for running “guix time-machine --commit=v1.X.0”?
<zimoun>I have hit 3 time-bombs when running you ReScience paper rebuilding all from scratch. And apteryx one with Python 2. Since the fixes for time-bomb are not all ready, maybe we could retain some substitutes (the ones required for running “guix time-machine --commit=v1.X.0 -- help“ could be a start).
<civodul>well, at least for the configured 'guix publish' TTL
<apteryx>civodul: I think there's more to it than "build it". There's probably some logic in Cuirass that means adding store roots for the requested branch tem built items, otherwise they'd be gargabe collected
<apteryx>I have no idea how it works, but that's my understanding from reading doc/release.org in guix-maintenance
<apteryx>like, in the past, we'd have a 1.3.0 release branch being built, 1.2.0, etc.
<apteryx>and keeping these branches job specification in Cuirass would cause it to add roots for the corresponding package outputs, to guard them from being garbage collected, IIUC.