499370 – Portage keeps installed non-world packages when USE dependencies are no longer satisfied

Bug 499370 - Portage keeps installed non-world packages when USE dependencies are no longer satisfied

Summary: Portage keeps installed non-world packages when USE dependencies are no longe...

Status:	CONFIRMED

Alias:	None

Product:	Portage Development
Classification:	Unclassified
Component:	Core - Dependencies (show other bugs)
Hardware:	All Linux

Importance:	Normal normal (vote)
Assignee:	Portage team

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Depends on:
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Reported:	2014-01-26 18:24 UTC by Michał Górny
Modified:	2016-12-17 22:05 UTC (History)
CC List:	0 users

See Also:	354787
Package list:
Runtime testing required:	---

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Description Michał Górny archtester

2014-01-26 18:24:42 UTC

For example, games-board/pysolfc requires python[tk].

I can do something like this:

1. USE=tk emerge -1v python

2. emerge -1v pysolfc

3. USE=-tk emerge -1v python

Since no @world package requires python[tk], portage happily rebuilds python without tk support. However, this means that pysolfc is now broken.

Portage should either:

1. prevent changing USE flags if that breaks any @installed package,

2. automatically unmerge (as blockers) packages that are no longer satisfied after the change.

Comment 1 Zac Medico gentoo-dev

2016-12-17 22:05:58 UTC

This is one of the reasons that emerge suggests to run --depclean after deep @world updates:

https://gitweb.gentoo.org/proj/portage.git/commit/?id=550795df709cfa9ec4a9502a4ad835319f778e95