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-rw-r--r--gnu/services/dmd.scm26
-rw-r--r--po/guix/POTFILES.in1
-rw-r--r--tests/guix-system.sh37
3 files changed, 63 insertions, 1 deletions
diff --git a/gnu/services/dmd.scm b/gnu/services/dmd.scm
index 4bf76e01ec..618df91c5e 100644
--- a/gnu/services/dmd.scm
+++ b/gnu/services/dmd.scm
@@ -17,6 +17,8 @@
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu services dmd)
+ #:use-module (guix ui)
+ #:use-module (guix sets)
#:use-module (guix gexp)
#:use-module (guix store)
#:use-module (guix monads)
@@ -24,6 +26,8 @@
#:use-module (gnu services)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-34)
+ #:use-module (srfi srfi-35)
#:export (dmd-configuration-file))
;;; Commentary:
@@ -32,6 +36,26 @@
;;;
;;; Code:
+(define (assert-no-duplicates services)
+ "Raise an error if SERVICES provide the same dmd service more than once.
+
+This is a constraint that dmd's 'register-service' verifies but we'd better
+verify it here statically than wait until PID 1 halts with an assertion
+failure."
+ (fold (lambda (service set)
+ (define (assert-unique symbol)
+ (when (set-contains? set symbol)
+ (raise (condition
+ (&message
+ (message
+ (format #f (_ "service '~a' provided more than once")
+ symbol)))))))
+
+ (for-each assert-unique (service-provision service))
+ (fold set-insert set (service-provision service)))
+ (setq)
+ services))
+
(define (dmd-configuration-file services)
"Return the dmd configuration file for SERVICES."
(define modules
@@ -40,6 +64,8 @@
(gnu build file-systems)
(guix build utils)))
+ (assert-no-duplicates services)
+
(mlet %store-monad ((modules (imported-modules modules))
(compiled (compiled-modules modules)))
(define config
diff --git a/po/guix/POTFILES.in b/po/guix/POTFILES.in
index 591b6a1c9a..619f6f99fc 100644
--- a/po/guix/POTFILES.in
+++ b/po/guix/POTFILES.in
@@ -2,6 +2,7 @@
# This should be source files of the various tools, and not package modules.
gnu/packages.scm
gnu/system.scm
+gnu/services/dmd.scm
guix/scripts/build.scm
guix/scripts/download.scm
guix/scripts/package.scm
diff --git a/tests/guix-system.sh b/tests/guix-system.sh
index b5476476e1..76e722fbc1 100644
--- a/tests/guix-system.sh
+++ b/tests/guix-system.sh
@@ -1,5 +1,5 @@
# GNU Guix --- Functional package management for GNU
-# Copyright © 2014 Ludovic Courtès <ludo@gnu.org>
+# Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org>
#
# This file is part of GNU Guix.
#
@@ -28,6 +28,8 @@ tmpfile="t-guix-system-$$"
errorfile="t-guix-system-error-$$"
trap 'rm -f "$tmpfile" "$errorfile"' EXIT
+# Reporting of syntax errors.
+
cat > "$tmpfile"<<EOF
;; This is line 1, and the next one is line 2.
(operating-system)
@@ -41,3 +43,36 @@ then
else
grep "$tmpfile:2:3:.*missing.* initializers" "$errorfile"
fi
+
+
+# Reporting of duplicate service identifiers.
+
+cat > "$tmpfile" <<EOF
+(use-modules (gnu))
+(use-service-modules networking)
+
+(operating-system
+ (host-name "antelope")
+ (timezone "Europe/Paris")
+ (locale "en_US.UTF-8")
+
+ (bootloader (grub-configuration (device "/dev/sdX")))
+ (file-systems (cons (file-system
+ (device "root")
+ (title 'label)
+ (mount-point "/")
+ (type "ext4"))
+ %base-file-systems))
+
+ (services (cons* (dhcp-client-service)
+ (dhcp-client-service) ;twice!
+ %base-services)))
+EOF
+
+if guix system vm "$tmpfile" 2> "$errorfile"
+then
+ # This must not succeed.
+ exit 1
+else
+ grep "service 'networking'.*more than once" "$errorfile"
+fi