Support @profile package set for bug #532224

Add support for a new @profile set which allows the profile to pull
in additional packages that do not belong to the @system set.

The motivation to have @profile separate from @system is that
@system packages may have incomplete dependency specifications
(due to long-standing Gentoo policy), and incomplete dependency
specifications have deleterious effects on the ability of emerge
--jobs to parallelize builds. So, unlike @system, packages added to
@profile do not hurt emerge --jobs parallelization.

Packages are added to the @profile set in the same way that they are
added to the @system set, except that atoms in the @profile set are
not preceded with a '*' character. Also, the @profile package set
is only supported when 'profile-set' is listed in the layout.conf
profile-formats field of the containing repository.

X-Gentoo-Bug: 532224
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=532224
Acked-by: Alexander Berntsen <bernalex@gentoo.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/cnf/sets/portage.conf b/cnf/sets/portage.conf
index 8ffcedc4c..cff7488eb 100644
--- a/cnf/sets/portage.conf
+++ b/cnf/sets/portage.conf
@@ -7,7 +7,10 @@
 # Not much that could be changed for world, so better leave it alone
 [world]
 class = portage.sets.base.DummyPackageSet
-packages = @selected @system
+packages = @profile @selected @system
+
+[profile]
+class = portage.sets.ProfilePackageSet.ProfilePackageSet
 
 [selected]
 class = portage.sets.files.WorldSelectedSet