guix-parameters/GUIX/etc/guix-daemon.service.in

# This is a "service unit file" for the systemd init system to launch
# 'guix-daemon'.  Drop it in /etc/systemd/system or similar to have
# 'guix-daemon' automatically started.

[Unit]
Description=Build daemon for GNU Guix

[Service]
ExecStart=@localstatedir@/guix/profiles/per-user/root/current-guix/bin/guix-daemon \
    --build-users-group=guixbuild --discover=no
Environment='GUIX_LOCPATH=@localstatedir@/guix/profiles/per-user/root/guix-profile/lib/locale' LC_ALL=en_US.utf8
StandardOutput=syslog
StandardError=syslog

# Work around a nasty systemd ‘feature’ that kills the entire process tree
# (including the daemon!) if any child, such as cc1plus, runs out of memory.
OOMPolicy=continue

# Despite the name, this is rate-limited: a broken daemon will eventually fail.
Restart=always

# See <https://lists.gnu.org/archive/html/guix-devel/2016-04/msg00608.html>.
# Some package builds (for example, go@1.8.1) may require even more than
# 1024 tasks.
TasksMax=8192

[Install]
WantedBy=multi-user.target