peplin [1] filed a deletion request for gatttool [2]:
'gatttool' is now included with the bluez-utils package: https://projects.archlinux.org/svntogit/packages.git/commit/trunk?h=packages...
[1] https://aur.archlinux.org/account/peplin/ [2] https://aur.archlinux.org/pkgbase/gatttool/
Request #668 has been accepted by arcanis [1].
aur-requests@lists.archlinux.org