This patch rewrites GuixSD services to make them extensible.
* gnu-system.am (GNU_SYSTEM_MODULES): Add gnu/services/dbus.scm.
* gnu/services.scm (<service>): Replace with new record type.
(<service-extension>, <service-type>): New record types.
(write-service-type, compute-boot-script, second-argument): New
procedures.
(%boot-service, boot-service-type): New variables.
(file-union, directory-union, modprobe-wrapper,
activation-service->script, activation-script,
gexps->activation-gexp): New procedures.
(activation-service-type, %activation-service): New variables.
(etc-directory, files->etc-directory, etc-service): New procedures.
(etc-service-type, setuid-program-service, firmware-service-type): New
variables.
(firmware->activation-gexp): New procedure.
(&service-error, &missing-target-service-error,
&ambiguous-target-service-error): New condition types.
(service-back-edges, fold-services): New procedures.
* gnu/services/avahi.scm (<avahi-configuration>): New record type.
(configuration-file): Replace keyword parameters with a single
'config' parameter.
(%avahi-accounts, %avahi-activation, avahi-service-type): New
variables.
(avahi-dmd-service): New procedure.
(avahi-service): Rewrite using 'service' and 'avahi-configuration'.
* gnu/services/base.scm (%root-file-system-dmd-service,
root-file-system-service-type): New variables.
(root-file-system-service): Use them.
(file-system->dmd-service-name): New procedure.
(file-system-service-type): New variable.
(file-system-service): Use it. Replace keyword parameters with a
single 'file-system' object.
(user-unmount-service-type): New variable.
(user-unmount-service): Use it.
(user-processes-service-type): New variable.
(user-processes-service): Use it.
(host-name-service-type): New variable.
(host-name-service): Use it.
(console-keymap-service-type): New variable.
(console-keymap-service): Use it.
(console-font-service-type): New variable.
(console-font-service): Use it.
(mingetty-pam-service, mingetty-dmd-service): New procedures.
(mingetty-service-type): New variable.
(mingetty-service): Use it.
(nscd-dmd-service): New procedure.
(nscd-activation, nscd-service-type): New variables.
(nscd-service): Use the latter.
(syslog-service-type): New variable.
(syslog-service): Use it.
(<guix-configuration>): New record type.
(%default-guix-configuration): New variable.
(guix-dmd-service, guix-accounts, guix-activation): New procedures.
(guix-service-type): New variable.
(guix-service): Replace list of keyword parameters with a single
'config' parameter. Rewrite using 'service'.
(<udev-configuration>): New record type.
(udev-dmd-service): New procedure.
(udev-service-type): New variable.
(udev-service): Use it.
(device-mapping-service-type): New variable.
(device-mapping-service): Use it.
(swap-service-type): New variable.
(swap-service): Use it.
* gnu/services/databases.scm (<postgresql-configuration>): New record
type.
(%postgresql-accounts, postgresql-activation): New variables.
(postgresql-dmd-service): New procedure.
(postgresql-service): Rewrite using 'service' and
'postgresql-configuration'.
* gnu/services/dbus.scm: New file.
* gnu/services/desktop.scm (dbus-configuration-directory, dbus-service):
Remove.
(wrapped-dbus-service): New procedure.
(<upower-configuration>): New record type.
(upower-configuration-file): Replace keyword parameters with single
<upower-configuration> parameter.
(%upower-accounts, %upower-activation): New variables.
(upower-dbus-service, upower-dmd-service): New procedures.
(upower-service-type): New variable.
(upower-service): Rewrite using 'service' and 'upower-configuration'.
(%colord-activation, %colord-accounts): New variables.
(colord-dmd-service): New procedure.
(colord-service-type): New variable.
(colord-service): Rewrite using 'service'.
(<geoclue-configuration>): New record type.
(geoclue-configuration-file): Replace keyword parameters with a single
'config' parameter.
(geoclue-dbus-service, geoclue-dmd-service): New procedures.
(%geoclue-accounts, geoclue-service-type): New variables.
(geoclue-service): Rewrite using 'service' and
'geoclue-configuration'.
(%polkit-accounts, %polkit-pam-services, polkit-service-type): New
variables.
(polkit-dmd-service): New procedure.
(polkit-service): Rewrite using 'service'.
(<elogind-configuration>)[elogind]: New field.
(elogind-dmd-service): New procedure.
(elogind-service-type): New variable.
(elogind-service): Rewrite using 'service'.
(%desktop-services): Remove argument to 'dbus-service'. Remove 'map'
over %BASE-SERVICES.
* gnu/services/dmd.scm (dmd-boot-gexp): New procedure.
(dmd-root-service-type, %dmd-root-service): New variables.
(dmd-service-type): New macro.
(<dmd-service>): New record type.
* gnu/services/lirc.scm (<lirc-configuration>): New record type.
(%lirc-activation): New variable.
(lirc-dmd-service): New procedure.
(lirc-service-type): New variable.
(lirc-service): Rewrite using 'service' and 'lirc-configuration'.
* gnu/services/networking.scm (<static-networking>): New record type.
(static-networking-service-type): New variable.
(static-networking-service): Rewrite using 'service' and
'static-networking'.
(dhcp-client-service-type): New variable.
(dhcp-client-service): Rewrite using 'service'.
(<ntp-configuration>): New record type.
(ntp-dmd-service): New procedure.
(ntp-service-type): New variable.
(ntp-service): New procedure.
(%tor-accounts, tor-service-type): New variable.
(tor-dmd-service): New procedure.
(tor-service): Rewrite using 'service'.
(<bitlbee-configuration>): New record type.
(bitlbee-dmd-service): New procedure.
(%bitlbee-accounts, %bitlbee-activation, bitlbee-service-type): New
variables.
(bitlbee-service): Rewrite using 'service'.
(%wicd-activation): New variable.
(wicd-dmd-service): New procedure.
(wicd-service-type): New variable.
(wicd-service): Rewrite using 'service'.
* gnu/services/ssh.scm (<lsh-configuration>): New record type.
(activation): Rename to...
(lsh-initialization): ... this.
(lsh-activation, lsh-dmd-service, lsh-pam-services): New procedures.
(lsh-service-type): New variable.
(lsh-service): Rewrite using 'service' and 'lsh-configuration'.
* gnu/services/web.scm (<nginx-configuration>): New record type.
(%nginx-accounts): New variable.
(nginx-activation, nginx-dmd-service): New procedures.
(nginx-service-type): New variable.
(nginx-service): Rewrite using 'service' and 'nginx-configuration'.
* gnu/services/xorg.scm (<slim-configuration>): New record type.
(slim-pam-service, slim-dmd-service): New procedures.
(slim-service-type): New variable.
(slim-service): Rewrite using 'service' and 'slim-configuration'.
* gnu/system.scm (file-union): Remove.
(other-file-system-services): Adjust to new 'file-system-service'
signature.
(essential-services): Add #:container? parameter. Add
%DMD-ROOT-SERVICE, %ACTIVATION-SERVICE, and calls to
'pam-root-service', 'account-service', 'operating-system-etc-service',
and a SETUID-PROGRAM-SERVICE instance.
(operating-system-services): Pass #:container? to 'essential-services.
(etc-directory): Remove.
(operating-system-etc-service): New procedure. Rewrite as a call to
'etc-service'.
(operating-system-accounts): Change to not return accounts required by
services.
(operating-system-etc-directory): Rewrite as a call to 'fold-services'
and 'etc-directory'.
(user-group->gexp, user-account->gexp, modprobe-wrapper): Remove.
(operating-system-activation-script): Rewrite as a call to
'fold-services' and 'activation-service->script'.
(operating-system-boot-script): Likewise.
(operating-system-derivation): Add call to 'lower-object'.
(emacs-site-file, emacs-site-directory, shells-file): Change to use
'computed-file' and 'scheme-file' instead of the monadic procedures.
* gnu/system/install.scm (cow-store-service-type): New variable.
(cow-store-service): Rewrite using 'service'.
(/etc/configuration-files): New procedure.
(configuration-template-service-type,
%configuration-template-service): New variables.
(configuration-template-service): Remove.
(installation-services): Adjust accordingly. Adjust argument to
'guix-service'.
* gnu/system/linux.scm (/etc-entry, pam-root-service): New procedures.
(pam-root-service-type): New variable.
* gnu/system/shadow.scm (user-group->gexp, user-account->gexp,
account-activation, etc-skel, account-service): New procedures.
(account-service-type): New variable.
* tests/services.scm: New file.
* doc/guix.texi (Base Services, Desktop Services): Adjust accordingly.
(Defining Services): Rewrite.
* doc/images/service-graph.dot: New file.
* doc.am (DOT_FILES): Add it.
* po/guix/POTFILES.in: Add gnu/services.scm.
Reported by 白い熊 @相撲道 <guix-devel_gnu.org@sumou.com>
at <http://lists.gnu.org/archive/html/guix-devel/2015-03/msg00264.html>.
* gnu/services/dmd.scm (assert-no-duplicates): New procedure.
(dmd-configuration-file): Use it.
* po/guix/POTFILES.in: Add gnu/services/dmd.scm.
* tests/guix-system.sh (errorfile): Add test.
* gnu/system/file-systems.scm (<file-system>)[title]: New field.
* gnu/services/base.scm (file-system-service): Add #:title parameter.
In 'start' gexp, use 'canonicalize-device-spec' and honor TITLE.
* gnu/system.scm (other-file-system-services,
operating-system-root-file-system, operating-system-initrd-file):
Adjust accordingly.
* gnu/system/linux-initrd.scm (file-system->spec): Likewise.
* gnu/system/vm.scm (system-disk-image): Add 'title' field for the root
file system.
* guix/build/linux-initrd.scm (mount-file-system): Expect the second
element of SPEC to be the title.
(boot-system)[root-mount-point?, root-fs-type]: Likewise.
* gnu/services/dmd.scm (dmd-configuration-file): Select
'canonicalize-device-spec'.
* gnu/system.scm (etc-directory): Change default value of #:profile.
Change contents of SHELLS. Use /run/current-system/profile/{s,}bin in
BASHRC.
(operating-system-boot-script)[%modules]: Add (guix build
linux-initrd). Add call to 'activate-current-system' in gexp.
(operating-system-initrd-file, operating-system-grub.cfg): New
procedures.
(operating-system-derivation): Don't build grub.cfg here and remove it
from the file union.
* gnu/system/vm.scm (qemu-image): Remove #:populate.
(operating-system-build-gid, operating-system-default-contents):
Remove.
(system-qemu-image): Remove call to
'operating-system-default-contents'. Use 'operating-system-grub.cfg'
to get grub.cfg. Add GRUB.CFG to #:inputs.
(system-qemu-image/shared-store): Likewise, but don't add GRUB.CFG to
#:inputs.
(system-qemu-image/shared-store-script): Pass --system kernel option.
* guix/build/activation.scm (%booted-system, %current-system): New
variables.
(boot-time-system, activate-current-system): New procedures.
* guix/build/install.scm (evaluate-populate-directive): Add case
for ('directory name uid gid mode).
(directives, populate-root-file-system): New procedures.
* guix/build/vm.scm (initialize-hard-disk): Replace calls to
'evaluate-populate-directive' by a call to
'populate-root-file-system'.
* gnu/services/dmd.scm (dmd-configuration-file): Use
/run/current-system/profile/bin.
* gnu/services/xorg.scm (slim-service): Likewise.
* gnu/services/base.scm (file-system-service): New procedure.
(user-processes-service): Add 'requirements' parameter.
* gnu/services/dmd.scm (dmd-configuration-file): Use (guix build
linux-initrd).
* guix/build/linux-initrd.scm (guix): Export 'check-file-system'.
* gnu/system.scm (file-union): New procedure.
(essential-services): Use it. Add that to the returned list.
* gnu/services/dmd.scm (dmd-configuration-file): Add derivations for
the (guix build syscalls) module, and add that to the load path of
dmd.conf.
* gnu/services/base.scm (root-file-system-service): Rewrite using the
'sync' and 'mount' procedures.
* gnu/services.scm (<service>)[inputs]: Remove.
* gnu/system.scm (links): Remove.
(etc-directory): Add PASSWD and SHADOW to #:inputs.
(operating-system-boot-script): Pass ETC to 'dmd-configuration-file'.
(operating-system-derivation): Remove EXTRAS from the union.
* gnu/system/linux.scm (pam-service->configuration): Rewrite in terms of
'gexp->derivation'. Compute the contents on the build side. Expect
'arguments' to contain a list of gexps.
(pam-services->directory): Rewrite in terms of 'gexp->derivation'.
(unix-pam-service): Change 'arguments' to a list of one gexp.
* gnu/system/shadow.scm (<user-account>)[inputs]: Remove.
[shell]: Change default value to a gexp.
(passwd-file): Rewrite in terms of 'gexp->derivation'. Compute
contents on the build side.
* gnu/services/base.scm (host-name-service, mingetty-service,
nscd-service, syslog-service, guix-service): Change 'start' and 'stop'
to gexps; remove 'inputs' field.
(guix-build-accounts): Change 'shell' field to a gexp.
* gnu/services/networking.scm (static-networking-service): Change
'start' and 'stop' to gexps; remove 'inputs' field.
* gnu/services/xorg.scm (slim-service): Likewise.
* gnu/services/dmd.scm (dmd-configuration-file): Expect ETC to be a
derivation. Change 'config' to a gexp. Use 'gexp->file' instead of
'text-file'.
* doc/guix.texi (Defining Services): Update nscd example with gexps, and
without 'inputs'. Add xref to "G-Expressions".
Ludovic Courtès