selinux-policy-2.eclass: EAPI 8 bump, SELINUX_POLICY_TYPES USE expand

Currently, a manual rebuild using the `@selinux-rebuild` set is needed
upon update of the POLICY_TYPES variable. This means that portage can't
track changes to it with `emerge --changed-use`. By making POLICY_TYPES
the new USE expand, SELINUX_POLICY_TYPES, `--changed-use` will trigger
a rebuild upon changes to it.

However, make SELINUX_POLICY_TYPES different so that POLICY_TYPES, the
old variable remains intact for EAPI 7, providing backwards compat with
EAPI 7. This patch only bumps the eclass however; sec-policy/selinux-*
and other related ebuilds are to be migrated to EAPI 8 later. This also
gives us time to put out a news article for this migration.

Naming the new USE expand SELINUX_POLICY_TYPES also makes it inline
with eclass variables, such as SELINUX_GIT_REPO and SELINUX_GIT_BRANCH.

Also document why we parse IUSE instead of USE, and strip the possible
leading '+' so that IUSE="+foo" is interpreted as 'foo' and not '+foo'.

Bug: https://bugs.gentoo.org/951355
Signed-off-by: Rahul Sandhu <nvraxn@gmail.com>
Acked-by: Kenton Groombridge <concord@gentoo.org>
Acked-by: Sam James <sam@gentoo.org>
Signed-off-by: Eli Schwartz <eschwartz@gentoo.org>

0 files changed, 0 insertions, 0 deletions