New URL for grub2-migration.xml is https://wiki.gentoo.org/wiki/GRUB2_Migration The second link is not as easily replaced as arches are uppercase now. It would be best to just mention the handbook at https://wiki.gentoo.org/wiki/Handbook:Main_Page sys-boot/grub/grub-9999-r1.ebuild: elog " http://www.gentoo.org/doc/en/grub2-migration.xml" sys-boot/grub/grub-0.97-r12.ebuild: ewarn "http://www.gentoo.org/doc/en/handbook/handbook-${ARCH}.xml?part=1&chap=10#grub-install-auto"
I leave it to base-system to deal with grub-0.97. + 04 Jan 2015; Mike Gilbert <floppym@gentoo.org> grub-2.00_p5107-r2.ebuild, + grub-2.02_beta2-r3.ebuild, grub-2.02_beta2-r6.ebuild, grub-9999-r1.ebuild: + Replace grub2 migration guide URL, bug 534500.
This was long overdue. Oh well, better late than never. commit 74da31ac82ee3a9cb6be460724b8d2c9194ea22f Author: Ian Stakenvicius <axs@gentoo.org> Date: Tue Oct 4 16:55:40 2016 -0400 sys-boot/grub:0: drop old handbook URL in favor of wiki URL