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Bug 766779 - sys-apps/portage: preserve-libs should not re-parent preserved libraries
Summary: sys-apps/portage: preserve-libs should not re-parent preserved libraries
Alias: None
Product: Portage Development
Classification: Unclassified
Component: Core (show other bugs)
Hardware: All All
: Normal normal (vote)
Assignee: Portage team
Depends on:
Blocks: preserve-libs
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Reported: 2021-01-24 00:34 UTC by Zac Medico
Modified: 2021-06-27 00:47 UTC (History)
3 users (show)

See Also:
Package list:
Runtime testing required: ---


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Description Zac Medico gentoo-dev 2021-01-24 00:34:44 UTC
When a library is preserved during a package upgrade, preserve-libs currently re-parents the preserved libraries to the new version of the package. The re-parenting is not really desirable since /var/db/pkg transactions are needed in order to undo it when the preserved libraries are finally eliminated. These /var/db/pkg transcactions introduce extra complexity, such the NEEDED.ELF.2 handling added in this commit for bug 637284:

For cases like bug 652382 where there are dependency cycles between preserved libraries, it will be possible to eliminate the preserved libraries with zero /var/db/pkg transactions.

Since bug 286714, parent-less preserved libs are already implemented for unmerge operations. So, if we simply eliminate the re-parenting step during upgrades, then the corresponding preserved libraries will be handled in essentially the same ways as those preserved during unmerge operations.