[gentoo-dev] libpng 1.6 upgrade and subslotting (and misuse of subslotting when there is also normal slotting)

[Samuli Suominen <ssuominen@gentoo.org>]

libpng 1.6 is in portage, but temporarily without KEYWORDS, pending on 
testign and this conversion, help would be much appericiated with 
converting the tree to use automatic rebuilds for the upgrade

Because there is binary-only SLOT="1.2" of libpng, none of these are 
correct:

$ grep -r 'media-libs/libpng.*:=' */*/*.ebuild
app-misc/tracker/tracker-0.14.4.ebuild:	>=media-libs/libpng-1.2:=
app-misc/tracker/tracker-0.14.5.ebuild:	>=media-libs/libpng-1.2:=
app-misc/tracker/tracker-0.16.0.ebuild:	>=media-libs/libpng-1.2:=
app-misc/tracker/tracker-9999.ebuild:	>=media-libs/libpng-1.2:=
media-gfx/digikam/digikam-3.0.0.ebuild:	media-libs/libpng:=
media-gfx/digikam/digikam-3.1.0.ebuild:	media-libs/libpng:=
media-plugins/gst-plugins-gl/gst-plugins-gl-0.10.3.ebuild: 
 >=media-libs/libpng-1.4:=
media-plugins/gst-plugins-libpng/gst-plugins-libpng-1.0.5.ebuild:RDEPEND=">=media-libs/libpng-1.4:="
media-plugins/gst-plugins-libpng/gst-plugins-libpng-1.0.6.ebuild:RDEPEND=">=media-libs/libpng-1.4:="
www-client/chromium/chromium-27.0.1453.12.ebuild:	media-libs/libpng:=
www-client/chromium/chromium-27.0.1453.3.ebuild:	media-libs/libpng:=
www-client/chromium/chromium-9999-r1.ebuild:	media-libs/libpng:=

They should all be :0= to avoid matching the :1.2 SLOT.

Plus some hundreds are completely without subslotting:

$ grep -r 'media-libs/libpng' */*/*.ebuild |grep -v ':.*='
output -> http://bpaste.net/show/89268/

Thanks,
Samuli