Bug 678340

Summary:	sys-apps/portage: ACCEPT_LICENSE settings in profiles are not incremental
Product:	Portage Development	Reporter:	Zac Medico <zmedico>
Component:	Core - Configuration	Assignee:	Portage team <dev-portage>
Status:	CONFIRMED ---
Severity:	normal	CC:	ulm
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Zac Medico gentoo-dev

2019-02-18 21:44:22 UTC

ACCEPT_LICENSE has support for things like "* -@EULA" which do not follow the usual incremental variable behavior. Since it has a different implementation, ACCEPT_LICENSE settings in profiles are not incremental with respect to each other, but ACCEPT_LICENSE settings in make.conf are incremental with respect to the profile setting.

Comment 1 Zac Medico gentoo-dev

2019-02-18 21:49:02 UTC

Given the deviance in behavior from usual incremental variables, I recommend that profiles do something like this if they want incremental like behavior:

ACCEPT_LICENSE="${ACCEPT_LICENSE} foo"

Comment 2 Joakim Tjernlund 2019-02-19 14:51:15 UTC

Thanks, this saved my day :)

Comment 3 Ulrich Müller gentoo-dev

2019-04-16 11:24:43 UTC

PMS defines incremental variables in section 5.3.1:
https://projects.gentoo.org/pms/7/pms.html#x1-560005.3.1

"Other variables, except where they affect only package-manager-specific functionality (such as Portage’s FEATURES variable), must not be treated incrementally—later definitions shall completely override those in parent profiles."

So from a PMS point of view either behaviour would be fine.