diff options
Diffstat (limited to 'gnu/services/dmd.scm')
| -rw-r--r-- | gnu/services/dmd.scm | 26 |
1 files changed, 26 insertions, 0 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 |