538678 – REQUIRED_USE errors do not mark masked flags appropriately

Bug 538678 - REQUIRED_USE errors do not mark masked flags appropriately

Summary: REQUIRED_USE errors do not mark masked flags appropriately

Status:	CONFIRMED

Alias:	None

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

Importance:	Normal normal (vote)
Assignee:	Portage team

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Keywords:

Depends on:
Blocks:	300071
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Reported:	2015-02-03 15:47 UTC by Michał Górny
Modified:	2015-02-07 22:18 UTC (History)
CC List:	1 user (show)

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

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Description Michał Górny archtester

2015-02-03 15:47:52 UTC

# FFMPEG_IMPL=libav emerge -1vp --nodep unpaper

These are the packages that would be merged, in order:



!!! Problem resolving dependencies for app-text/unpaper

!!! The ebuild selected to satisfy "unpaper" has unmet requirements.
- app-text/unpaper-6.1-r1::gentoo-cvs USE="-test" ABI_X86="64" FFMPEG_IMPL="-ffmpeg -libav"

  The following REQUIRED_USE flag constraints are unsatisfied:
    exactly-one-of ( ffmpeg_impl_ffmpeg ffmpeg_impl_libav )

And user is liek.. wtf? Actually the output should look like:
- app-text/unpaper-6.1-r1::gentoo-cvs USE="-test" ABI_X86="64" FFMPEG_IMPL="-ffmpeg (-libav)"

since USE=libav is p.u.masked on that package. Maybe it should also more verbosely indicate that for REQUIRED_USE, to help users figure out what's happening.