Index: etc/rc.d/pkg_bootstrap
===================================================================
--- /dev/null
+++ etc/rc.d/pkg_bootstrap
@@ -0,0 +1,80 @@
+#!/bin/sh
+#
+# Copyright (c) 2018 Jonathan Anderson
+# All rights reserved.
+#
+# This software was developed by BAE Systems, the University of Cambridge
+# Computer Laboratory, and Memorial University under DARPA/AFRL contract
+# FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing
+# (TC) research program.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+#
+# This script allows a system to bootstrap the package system and a set of
+# initial packages on first boot. To enable pkg(8) bootstrapping, add the
+# following to /etc/rc.conf:
+#
+# pkg_bootstrap_enable="YES"
+#
+# A list of packages to be installed at bootstrap time can be specified with:
+#
+# pkg_bootstrap_list="sudo tmux git kyua"
+#
+# The environment for the pkg(8) bootstrap commands can be influenced using the
+# pkg_bootstrap_env variable. This can be helpful for overriding environment
+# variables such as ABI or OSVERSION:
+#
+# pkg_bootstrap_env="OSVERSION=1200056"
+#
+
+# PROVIDE: pkg-bootstrap
+# REQUIRE: NETWORKING growfs
+# BEFORE:  local
+# KEYWORD: firstboot
+
+. /etc/rc.subr
+
+name="pkg-bootstrap"
+desc="Bootstrap pkg(8) and an (optional) set of packages"
+start_cmd="pkg_bootstrap_start"
+stop_cmd=":"
+rcvar="pkg_bootstrap_enable"
+
+pkg_bootstrap_start()
+{
+	# Bootstrap pkg(8)
+	env ASSUME_ALWAYS_YES=yes ${pkg_bootstrap_env} pkg bootstrap || exit 1
+
+	# Install any requested packages
+	if [ -n "${pkg_bootstrap_list}" ]
+	then
+		env ${pkg_bootstrap_env} pkg install -y ${pkg_bootstrap_list} \
+		|| exit 1
+	fi
+}
+
+load_rc_config $name
+run_rc_command "$1"