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`preserve=yes` needs to skip remove scriptlets.

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难度
3/5
预计耗时
1-2 天
新手友好度
55/100
Issue 类型
缺陷
描述清晰度
基本清楚
活跃度
冷清
技术栈
c

调研方向

Start by reviewing the preserve=yes handling in xbps-remove and the behavior introduced by commit c11dba09d7389896cd50f35bf57150542a707da. Trace both remove and purge scriptlet stages, then verify that preserved packages skip removal scriptlets while retaining the existing kernel-safety behavior.

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描述

bug

In https://github.com/void-linux/xbps/commit/c11dba09d7389896cd50f35bf57150542a707da5 the behavior of preserve=yes packages was changed to behave the same on explicit removal and update, in both cases files are now preserved. This is done so that xbps-remove does not circumvent vkpurge and its "is this kernel booted" check before uninstalling the kernel files.

But currently the remove scripts still run on explicit removal, instead the remove script should probably be completely skipped if the package was build with preserve=yes.

There is currently two stages in the remove scriptlets, remove and purge, they usually just run one after another and don't really have any use. I thought about removing the purge stage before, because every extra script execution just adds overhead without any real benefit.
It might make sense to to keep both stages and make use of that differentiation for the preserve=yes scripts, but I'm not convinced that it would actually be beneficial, especially because preserve=yes is really only used for kernels.

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C
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