guix-install.sh: Support OpenRC.

* etc/guix-install.sh (chk_init_sys): Detect OpenRC.
(sys_enable_guix_daemon): Install & enable the Guix daemon on such
systems.
* etc/openrc/guix-daemon.in: New file.
* nix/local.mk: Add a rule for it.
(openrcservicedir, nodist_openrcservice_DATA): New variables.
(CLEANFILES, EXTRA_DIST): Add them.
* .gitignore: Ignore etc/openrc/guix-daemon.

Signed-off-by: Tobias Geerinckx-Rice <me@tobias.gr>

.gitignore

@@ -74,6 +74,7 @@
 /etc/guix-publish.conf
 /etc/guix-publish.service
 /etc/init.d/guix-daemon
+/etc/openrc/guix-daemon
 /guix-daemon
 /guix/config.scm
 /libformat.a

etc/guix-install.sh

@@ -4,6 +4,7 @@
 # Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
 # Copyright © 2018 Efraim Flashner <efraim@flashner.co.il>
 # Copyright © 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
+# Copyright © 2020 Morgan Smith <Morgan.J.Smith@outlook.com>
 #
 # This file is part of GNU Guix.
 #
@@ -150,6 +151,10 @@ chk_init_sys()
         _msg "${INF}init system is: sysv-init"
         INIT_SYS="sysv-init"
         return 0
+    elif [[ $(openrc --version 2>/dev/null) =~ \(OpenRC\) ]]; then
+        _msg "${INF}init system is: OpenRC"
+        INIT_SYS="openrc"
+        return 0
     else
         INIT_SYS="NA"
         _err "${ERR}Init system could not be detected."
@@ -383,6 +388,16 @@ sys_enable_guix_daemon()
                   service guix-daemon start; } &&
                 _msg "${PAS}enabled Guix daemon via sysv"
             ;;
+        openrc)
+            { mkdir -p /etc/init.d;
+              cp "${ROOT_HOME}/.config/guix/current/etc/openrc/guix-daemon" \
+                 /etc/init.d/guix-daemon;
+              chmod 775 /etc/init.d/guix-daemon;
+
+              rc-update add guix-daemon default &&
+                  rc-service guix-daemon start; } &&
+                _msg "${PAS}enabled Guix daemon via OpenRC"
+            ;;
         NA|*)
             _msg "${ERR}unsupported init system; run the daemon manually:"
             echo "  ${ROOT_HOME}/.config/guix/current/bin/guix-daemon --build-users-group=guixbuild"

etc/openrc/guix-daemon.in

@@ -0,0 +1,28 @@
+#!/sbin/openrc-run
+# GNU Guix --- Functional package management for GNU
+# Copyright © 2020 Morgan Smith <Morgan.J.Smith@outlook.com>
+#
+# This file is part of GNU Guix.
+#
+# GNU Guix is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or (at
+# your option) any later version.
+#
+# GNU Guix is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+export GUIX_LOCPATH=@localstatedir@/guix/profiles/per-user/root/guix-profile/lib/locale
+export LC_ALL=en_US.utf8
+command="@localstatedir@/guix/profiles/per-user/root/current-guix/bin/guix-daemon"
+command_args="--build-users-group=guixbuild"
+command_background="yes"
+pidfile="/var/run/guix-daemon.pid"
+
+output_log="/var/log/guix-daemon-stdout.log"
+error_log="/var/log/guix-daemon-stderr.log"

nix/local.mk

@@ -180,6 +180,17 @@ etc/init.d/guix-daemon: etc/init.d/guix-daemon.in	\
 	       "$<" > "$@.tmp";		\
 	mv "$@.tmp" "$@"
 
+# The service script for openrc.
+openrcservicedir = $(sysconfdir)/init.d
+nodist_openrcservice_DATA = etc/openrc/guix-daemon
+
+etc/openrc/guix-daemon: etc/openrc/guix-daemon.in	\
+			 $(top_builddir)/config.status
+	$(AM_V_GEN)$(MKDIR_P) "`dirname $@`";	\
+	$(SED) -e 's|@''localstatedir''@|$(localstatedir)|' <	\
+	       "$<" > "$@.tmp";		\
+	mv "$@.tmp" "$@"
+
 # The '.conf' jobs for Upstart.
 upstartjobdir = $(libdir)/upstart/system
 nodist_upstartjob_DATA = etc/guix-daemon.conf etc/guix-publish.conf
@@ -194,7 +205,8 @@ etc/guix-%.conf: etc/guix-%.conf.in	\
 CLEANFILES +=					\
   $(nodist_systemdservice_DATA)			\
   $(nodist_upstartjob_DATA)			\
-  $(nodist_sysvinitservice_DATA)
+  $(nodist_sysvinitservice_DATA)		\
+  $(nodist_openrcservice_DATA)
 
 EXTRA_DIST +=					\
   %D%/AUTHORS					\
@@ -203,7 +215,8 @@ EXTRA_DIST +=					\
   etc/guix-daemon.conf.in			\
   etc/guix-publish.service.in			\
   etc/guix-publish.conf.in			\
-  etc/init.d/guix-daemon.in
+  etc/init.d/guix-daemon.in			\
+  etc/openrc/guix-daemon.in
 
 if CAN_RUN_TESTS