From b5f4e686359d8842b329e6b161ef89fa6c04ebc3 Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Mon, 28 Apr 2014 23:07:08 +0200 Subject: services: Rewrite using gexps. * gnu/services.scm ()[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 ()[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". --- gnu/services/dmd.scm | 77 ++++++++++++++++++++++++++-------------------------- 1 file changed, 39 insertions(+), 38 deletions(-) (limited to 'gnu/services/dmd.scm') diff --git a/gnu/services/dmd.scm b/gnu/services/dmd.scm index 54fb5cbfd6..c187c09857 100644 --- a/gnu/services/dmd.scm +++ b/gnu/services/dmd.scm @@ -17,6 +17,7 @@ ;;; along with GNU Guix. If not, see . (define-module (gnu services dmd) + #:use-module (guix gexp) #:use-module (guix monads) #:use-module (gnu services) #:use-module (ice-9 match) @@ -31,50 +32,50 @@ (define (dmd-configuration-file services etc) "Return the dmd configuration file for SERVICES, that initializes /etc from -ETC (the name of a directory in the store) on startup." +ETC (the derivation that builds the /etc directory) on startup." (define config - `(begin - (use-modules (ice-9 ftw)) + #~(begin + (use-modules (ice-9 ftw)) - (register-services - ,@(map (lambda (service) - `(make - #:docstring ',(service-documentation service) - #:provides ',(service-provision service) - #:requires ',(service-requirement service) - #:respawn? ',(service-respawn? service) - #:start ,(service-start service) - #:stop ,(service-stop service))) - services)) + (register-services + #$@(map (lambda (service) + #~(make + #:docstring '#$(service-documentation service) + #:provides '#$(service-provision service) + #:requires '#$(service-requirement service) + #:respawn? '#$(service-respawn? service) + #:start #$(service-start service) + #:stop #$(service-stop service))) + services)) - ;; /etc is a mixture of static and dynamic settings. Here is where we - ;; initialize it from the static part. - (format #t "populating /etc from ~a...~%" ,etc) - (let ((rm-f (lambda (f) - (false-if-exception (delete-file f))))) - (rm-f "/etc/static") - (symlink ,etc "/etc/static") - (for-each (lambda (file) - ;; TODO: Handle 'shadow' specially so that changed - ;; password aren't lost. - (let ((target (string-append "/etc/" file)) - (source (string-append "/etc/static/" file))) - (rm-f target) - (symlink source target))) - (scandir ,etc - (lambda (file) - (not (member file '("." "..")))))) + ;; /etc is a mixture of static and dynamic settings. Here is where we + ;; initialize it from the static part. + (format #t "populating /etc from ~a...~%" #$etc) + (let ((rm-f (lambda (f) + (false-if-exception (delete-file f))))) + (rm-f "/etc/static") + (symlink #$etc "/etc/static") + (for-each (lambda (file) + ;; TODO: Handle 'shadow' specially so that changed + ;; password aren't lost. + (let ((target (string-append "/etc/" file)) + (source (string-append "/etc/static/" file))) + (rm-f target) + (symlink source target))) + (scandir #$etc + (lambda (file) + (not (member file '("." "..")))))) - ;; Prevent ETC from being GC'd. - (rm-f "/var/guix/gcroots/etc-directory") - (symlink ,etc "/var/guix/gcroots/etc-directory")) + ;; Prevent ETC from being GC'd. + (rm-f "/var/guix/gcroots/etc-directory") + (symlink #$etc "/var/guix/gcroots/etc-directory")) - ;; guix-daemon 0.6 aborts if 'PATH' is undefined, so work around it. - (setenv "PATH" "/run/current-system/bin") + ;; guix-daemon 0.6 aborts if 'PATH' is undefined, so work around it. + (setenv "PATH" "/run/current-system/bin") - (format #t "starting services...~%") - (for-each start ',(append-map service-provision services)))) + (format #t "starting services...~%") + (for-each start '#$(append-map service-provision services)))) - (text-file "dmd.conf" (object->string config))) + (gexp->file "dmd.conf" config)) ;;; dmd.scm ends here -- cgit v1.2.3