03/06: Add 'guix-daemon.service' file for systemd.

[Ludovic Courtès]

civodul pushed a commit to branch master
in repository guix.

commit d2825c96141c7b6844d9e04f982919c0509165e1
Author: Ludovic Courtès <address@hidden>
Date:   Wed Jul 15 17:13:16 2015 +0200

    Add 'guix-daemon.service' file for systemd.
    
    * etc/guix-daemon.service.in: New file, provided by Ricardo Wurmus.
    * daemon.am (CLEANFILES): Add etc/guix-daemon.service.
      (systemdservicedir, nodist_systemdservice_DATA): New variables.
      (EXTRA_DIST): Add etc/guix-daemon.service.in.
    * doc/guix.texi (Binary Installation, Build Environment Setup): Mention
      'guix-daemon.service'.
---
 .gitignore                 |    1 +
 daemon.am                  |   15 +++++++++++++--
 doc/guix.texi              |   12 ++++++++++--
 etc/guix-daemon.service.in |   15 +++++++++++++++
 4 files changed, 39 insertions(+), 4 deletions(-)

diff --git a/.gitignore b/.gitignore
index c1061d7..c7a6cdd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -125,3 +125,4 @@ GTAGS
 /doc/os-config-bare-bones.texi
 /doc/os-config-desktop.texi
 /doc/*.1
+/etc/guix-daemon.service
diff --git a/daemon.am b/daemon.am
index eecfea1..1fee9b7 100644
--- a/daemon.am
+++ b/daemon.am
@@ -21,7 +21,7 @@
 #
 
 BUILT_SOURCES += nix/libstore/schema.sql.hh
-CLEANFILES += $(BUILT_SOURCES)
+CLEANFILES += $(BUILT_SOURCES) etc/guix-daemon.service
 
 noinst_LIBRARIES = libformat.a libutil.a libstore.a
 
@@ -181,10 +181,21 @@ endif BUILD_DAEMON_OFFLOAD
 nodist_libexec_SCRIPTS =                       \
   nix/scripts/guix-authenticate
 
+# The '.service' file for systemd.
+systemdservicedir = $(libdir)/systemd/system
+nodist_systemdservice_DATA = etc/guix-daemon.service
+
+etc/guix-daemon.service: etc/guix-daemon.service.in    \
+                        $(top_builddir)/config.status
+       $(SED) -e 's|@''bindir''@|$(bindir)|' <         \
+              "etc/guix-daemon.service.in" > "address@hidden"
+       mv "address@hidden" "$@"
+
 EXTRA_DIST +=                                  \
   nix/libstore/schema.sql                      \
   nix/AUTHORS                                  \
-  nix/COPYING
+  nix/COPYING                                  \
+  etc/guix-daemon.service.in
 
 AM_TESTS_ENVIRONMENT +=                                \
   top_builddir="$(abs_top_builddir)"
diff --git a/doc/guix.texi b/doc/guix.texi
index 7d18c00..e4662cb 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -330,6 +330,10 @@ Run the daemon:
 # ~root/.guix-profile/bin/guix-daemon --build-users-group=guixbuild
 @end example
 
+On hosts using the systemd init system, drop
address@hidden/.guix-profile/lib/systemd/system/guix-daemon.service} in
address@hidden/etc/systemd/system}.
+
 @item
 Make the @command{guix} command available to other users on the machine,
 for instance with:
@@ -512,8 +516,12 @@ Bash syntax and the @code{shadow} commands):
 @noindent
 The number of build users determines how many build jobs may run in
 parallel, as specified by the @option{--max-jobs} option
-(@pxref{Invoking guix-daemon, @option{--max-jobs}}).
-The @code{guix-daemon} program may then be run as @code{root} with:
+(@pxref{Invoking guix-daemon, @option{--max-jobs}}).  The
address@hidden program may then be run as @code{root} with the
+following address@hidden your machine uses the systemd init system,
+dropping the @address@hidden/lib/systemd/system/guix-daemon.service}
+file in @file{/etc/systemd/system} will ensure that
address@hidden is automatically started.}:
 
 @example
 # guix-daemon --build-users-group=guixbuild
diff --git a/etc/guix-daemon.service.in b/etc/guix-daemon.service.in
new file mode 100644
index 0000000..28ef000
--- /dev/null
+++ b/etc/guix-daemon.service.in
@@ -0,0 +1,15 @@
+# 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]
address@hidden@/guix-daemon --build-users-group=guixbuild
+RemainAfterExit=yes
+StandardOutput=syslog
+StandardError=syslog
+
+[Install]
+WantedBy=multi-user.target