Bug 619626

Summary:	sys-apps/portage: emerge --autounmask-continue interaction with --binpkg-respect-use triggers unnecessary rebuild
Product:	Portage Development	Reporter:	Zac Medico <zmedico>
Component:	Binary packages support	Assignee:	Portage team <dev-portage>
Status:	RESOLVED FIXED
Severity:	normal	CC:	esigra
Priority:	Normal	Keywords:	InVCS
Version:	unspecified
Hardware:	All
OS:	All
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=439688
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	376695, 627566

Description Zac Medico gentoo-dev

2017-05-24 23:56:48 UTC

When using --autounmask-continue together with --binpkg-respect-use, it's possible for emerge to reject a binary package due to "non matching USE" and at the same time apply an autounmask change that would cause the rejected binary package to be acceptable. The result is that the package is rebuilt unnecessarily.

Comment 1 Zac Medico gentoo-dev

2017-05-25 00:07:28 UTC

It should be possible to search self._dynamic_config.ignored_binaries for binary packages that match the current set of autounmask changes, and trigger backtracking calculation in this case.

Comment 2 Zac Medico gentoo-dev

2017-06-01 08:36:04 UTC

Patch posted for review:

https://archives.gentoo.org/gentoo-portage-dev/message/aaf8bab8f1ca89dfc493477e4ca4a512
https://github.com/gentoo/portage/pull/171

Comment 3 Zac Medico gentoo-dev

2017-06-02 05:44:04 UTC

This is in the master branch:

https://gitweb.gentoo.org/proj/portage.git/commit/?id=60af7e2696b96b47b0cd9e70caabd10546206b8b