Bug 608356

Summary:	sys-apps/portage: document that FEATURES=unmerge-backup overwrites binary packages, suggest FEATURES=binpkg-multi-instance
Product:	Portage Development	Reporter:	Zac Medico <zmedico>
Component:	Documentation	Assignee:	Portage team <dev-portage>
Status:	CONFIRMED ---
Severity:	normal	CC:	fatzer2
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	All
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:	586410
Bug Blocks:

Description Zac Medico gentoo-dev

2017-02-05 19:39:41 UTC

Since bug 586410, it's possible for FEATURES=unmerge-backup to overwrite binary packages that don't correspond to the installed instances. This behavior should be documented, and there should be a suggestion to enable FEATURES=binpkg-multi-instance.

Comment 1 Zac Medico gentoo-dev

2017-02-06 17:09:06 UTC

The existing behavior can be very confusing if the user installs a binary package which is then overwritten by FEATURES=unmerge-backup. In this case, the user could run `emerge --usepkgonly package` repeatedly, and end up alternating between two different builds of the same package version.