This allows for native builds on the Hurd, doing
sudo ./pre-inst-env guix-daemon --disable-chroot --build-users-group=guixbuild &
./pre-inst-env guix build hello
* nix/libutil/util.cc (killUser)[__GNU__]: Avoid kill -1 bug; kill only
current process and ignore SIGKILL status in parent.
Co-authored-by: Jan Nieuwenhuizen <janneke@gnu.org>
d0ed201e0a