gnu: services: Add modesetting driver to xorg configuration path.

* gnu/services/xorg.scm (xorg-configuration-file): Add drivers path from
  xorg-server.  This includes the modesetting driver.

Signed-off-by: Andy Wingo <wingo@igalia.com>

services: networking: Add descriptions.

* gnu/services/networking.scm (static-networking-service-type)
(ntp-service-type, inetd-service-type, tor-service-type)
(tor-hidden-service-type, bitlbee-service-type)
(wicd-service-type, network-manager-service-type)
(connman-service-type, openvswitch-service-type): Add 'description'
field.
* po/packages/POTFILES.in: Add gnu/services/networking.scm.

services: base: Add descriptions.

* gnu/services/base.scm (fstab-service-type)
(file-system-service-type, urandom-seed-service-type)
(session-environment-service-type)
(console-font-service-type)
(login-service-type, agetty-service-type)
(mingetty-service-type, nscd-service-type)
(pam-limits-service-type, guix-service-type)
(guix-publish-service-type, udev-service-type)
(gpm-service-type): Add 'description' field.
* po/packages/POTFILES.in: Add gnu/services/base.scm.

gnu: cuirrass: Default port to 8081.

* gnu/services/cuirass.scm (<cuirass-configuration>): Default port to 8081.
  Fixes conflict with guix-publish default.
* doc/guix.texi (Continuous Integration): Update.

services: file-system: Use 'file-system->spec'.

* gnu/services/base.scm (file-system-shepherd-service): Use
'file-system->spec' instead of in-line code.

services: base: Import the closure of (gnu build file-systems).

* gnu/services/base.scm (file-system-shepherd-service): Use
'source-module-closure' in the 'with-imported-modules' form.

services: elogind: Add default value.

* gnu/services/desktop.scm (elogind-service-type)[default-value]: New
field.

services: web: Fix nginx-service-type's ‘file’ procedure.

* gnu/services/web.scm (nginx-activation, nginx-shepherd-service): Replace
references to non-existent ‘config-file’ with ‘file’.
* doc/guix.texi (Web Services): Likewise.

services: Add auto-enable? parameter to the bluetooth-service.

* gnu/services/desktop.scm (bluetooth-configuration): New record.
(bluetooth-shepherd-service): Use it.
(bluetooth-directory): New method.
(bluetooth-service-type): Use it to extend the etc-service-type service.
(bluetooth-service): Add `auto-enable?' parameter.
* doc/guix.texi (Desktop Services): Document it.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

services: '%desktop-services' uses NetworkManager instead of Wicd.

Discussed at
<https://lists.gnu.org/archive/html/guix-devel/2017-08/msg00277.html>.

* gnu/services/desktop.scm (%desktop-services): Remove call to
'wicd-service'.  Add instances of NETWORK-MANAGER-SERVICE-TYPE and
WPA-SUPPLICANT-SERVICE-TYPE.
* doc/guix.texi (Networking Services): Document
'network-manager-service-type' as being part of '%desktop-services'.
(Desktop Services): Replace Wicd with NM.

services: mpd: Remove the mpd-file field.

Since MPD switches user, the pid-file must be in a writable dir.  This
is now always /var/run/mpd/(user)/pid.

* gnu/services/audio.scm (mpd-service-type): Add a activation-service
extension.
(<mpd-configuration>)[pid-file]: Remove.
(mpd-service): Rename to...
(mpd-shepherd-service): ... this.
(mpd-file-name, mpd-service-activation): New procedure.
* doc/guix.texi (Audio Services): Document the changes.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

services: user-processes: Reap child processes.

Fixes <http://bugs.gnu.org/26931>.
Reported by Leo Famulari <leo@famulari.name>.

* gnu/services/base.scm (user-processes-service-type)[stop]: Add
'reap-children' loop.
* gnu/tests/base.scm (run-halt-test): New procedure.
(%test-halt): New variable.

gnu: Add draft of gdm service.

* gnu/services/xorg.scm (%gdm-accounts, <gdm-configuration>)
(gdm-etc-service, gdm-pam-service, gdm-shepherd-service, gdm-service-programs)
(gdm-service-type, gdm-service): New public variables.  Not yet working.

gnu: services: Log debug messages to /var/log/debug.

* gnu/services/base.scm (%default-syslog.conf): Create a /var/log/debug with
  messages logged to syslog at debug level.

gnu: services: Refactor to separate X and startx wrappers.

* gnu/services/xorg.scm (xorg-wrapper): New public function.
(xorg-start-command): Use xorg-wrapper.

gnu: Add AccountsService service to desktop services.

* doc/guix.texi (Desktop Services): Add accountsservice-service.
* gnu/services/desktop.scm (%accountsservice-activation):
(accountsservice-service-type): New public variables.
(%desktop-services): Add accountsservice-service.

services: Add libvirt services

* gnu/services/virtualization.scm: New file.
* doc/guix.texi (Virtualization Services): Document it.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

Signed-off-by: Christopher Baines <mail@cbaines.net>

services: herd: Actions return a list of results.

Fixes a regression introduced in
0642838b2e9ab2bd988dccb64b9e1130006347bf.

* gnu/services/herd.scm (invoke-action): Explain that we get a list of
results.
(current-services): Expect a list of result and use the first one.
(unload-service, %load-file, eval-there): Likewise.

web: Remove the nginx-service procedure.

Now that the service-type has a default value, and configuration record is
accessible.

* gnu/services/web.scm (nginx-service): Remove procedure.
* doc/guix.texi (Web Services): Update and improve NGinx documentation.

web: Add default-value for the nginx-service-type.

* gnu/services/web.scm (nginx-service-type)[default-value]:
  Use (nginx-configuration).