sys-apps/debianutils: drop installkernel use flag

Random packages requiring some tool from Debian should not cause the kernel
installation process to change.

The dropping of the debianutils dependency in ca-certificates has already
caused some surprises due to installkernel being depcleaned. The origin of the
problem lies here in debianutils, users unknowingly use and rely on
installkernel but do not have it in their world file because it was implicitly
pulled in by some package that happens to use the run-parts command.

And also the other way around. If I am one of the users that wants to do
everything manually, I should not have my 'make install' unknowingly altered
by some package that I installed which pulled debianutils into the depgraph.

Drop this unused runtime dependency (which is against policy to begin with) and
its accompanying flag. A news item will be posted to notify users of this change
and instruct them to add installkernel to their world file.

Signed-off-by: Andrew Ammerlaan <andrewammerlaan@gentoo.org>
Closes: https://github.com/gentoo/gentoo/pull/35533
Signed-off-by: Andrew Ammerlaan <andrewammerlaan@gentoo.org>

profiles/features/prefix/package.use.mask

@@ -14,10 +14,6 @@ x11-base/xorg-server elogind
 # depends on systemd
 sys-apps/ipmitool openbmc
 
-# Fabian Groffen <grobian@gentoo.org> (2020-06-07)
-# installing kernels has no business in Prefix
-sys-apps/debianutils installkernel
-
 # Benda Xu <heroxbd@gentoo.org> (2019-08-20)
 # avoid gnome-extra/gnome-user-share, which depends on systemd.
 gnome-base/gnome-extra-apps share

sys-apps/debianutils/debianutils-5.14-r1.ebuild

@@ -12,11 +12,7 @@ SRC_URI="mirror://debian/pool/main/d/${PN}/${PN}_${PV}.tar.xz"
 LICENSE="BSD GPL-2 SMAIL"
 SLOT="0"
 KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~x86-linux"
-IUSE="+installkernel static"
-
-PDEPEND="
-	installkernel? ( sys-kernel/installkernel )
-"
+IUSE="static"
 
 PATCHES=( "${FILESDIR}"/${PN}-3.4.2-no-bs-namespace.patch )
 

sys-apps/debianutils/metadata.xml

@@ -5,10 +5,4 @@
 		<email>base-system@gentoo.org</email>
 		<name>Gentoo Base System</name>
 	</maintainer>
-	<use>
-		<flag name="installkernel">
-			Install /sbin/installkernel script (for Linux).
-			installkernel is required whenever a kernel will be installed via make install
-		</flag>
-	</use>
 </pkgmetadata>