Hi,
The packages kcm-grub2[1] and kcm-grub2-git[2] are both orphans and
there doesn't look to be any active development on the program. The
PKGBUILD's need updating to compile properly. There is an alternative
available in the AUR that has active development. (grub2-editor[3]) For
that reason, please remove [1} and [2]. THANKS!
Regards,
Dustin
[1] https://aur.archlinux.org/packages/kcm-grub2/
[2] https://aur.archlinux.org/packages/kcm-grub2-git/
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[3] https://aur.archlinux.org/packages/grub2-editor/