@polishdub @pertho @dch @Tubsta @AFresh1 I mean screw it: import the OpenBSD userland, keep the native utilities and merge the ZFS integration into tools like top(1).
but please keep FreeBSD's mail(1).
I've been trying¹ for almost two years² with no success to get a patch into OpenBSD's mail(1) that jockeys the In-Reply-To header like FreeBSD's mail(1) does.
The lack of In-Reply-To breaks the ability to use mail(1) for a bunch of the scripting tasks that I want to do in a cross-platform fashion. ☹