Bug 566704

Summary:	sys-apps/portage: emerge misses automask settings for conditional USE deps
Product:	Portage Development	Reporter:	Zac Medico <zmedico>
Component:	Core - Interface (emerge)	Assignee:	Portage team <dev-portage>
Status:	RESOLVED FIXED
Severity:	normal	CC:	esigra
Priority:	Normal	Keywords:	InVCS
Version:	2.2
Hardware:	All
OS:	All
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	376695

Description Zac Medico gentoo-dev

2015-11-24 08:24:19 UTC

When there are unsatisfied conditional USE dependencies, emerge will report an unsatisfied dependency and suggest a USE change as follows 

emerge: there are no ebuilds built with USE flags to satisfy "dev-python/mock[python_targets_python2_7(-)?,python_targets_python3_3(-)?,python_targets_python3_4(-)?,python_targets_jython2_7(-)
?,-python_single_target_python2_7(-),-python_single_target_python3_3(-),-python_single_target_python3_4(-),-python_single_target_jython2_7(-)]".
!!! One of the following packages is required to complete your request:
- dev-python/foo::gentoo (Change USE: -python_targets_jython2_7)


It would be nicer if emerge converted the "Change USE" suggestion into an autounmask change which can be automatically written to package.use when --autounmask-write is enabled.

Comment 1 Zac Medico gentoo-dev

2015-11-24 09:35:25 UTC

There's a patch in the following branch:

https://github.com/zmedico/portage/tree/bug_566704

I've posted it for review here:

https://archives.gentoo.org/gentoo-portage-dev/message/fab681966acf99d7be6df55e5fa2054f

Comment 2 Zac Medico gentoo-dev

2015-11-24 16:46:29 UTC

This is in the master branch:

https://gitweb.gentoo.org/proj/portage.git/commit/?id=0c00530c92ecca3499c7d98fedae41a9ab559d17

Comment 3 Alexander Berntsen (RETIRED) gentoo-dev

2016-02-03 14:15:00 UTC

Released in 2.2.26.