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-rw-r--r--doc/guix.texi9
-rw-r--r--gnu/services/dmd.scm83
2 files changed, 68 insertions, 24 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 5eb6720934..240b5d1ccd 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -8068,6 +8068,15 @@ deco doc @var{service-name}
where @var{service-name} is one of the symbols in @var{provision}
(@pxref{Invoking deco,,, dmd, GNU dmd Manual}).
+
+@item @code{modules} (default: @var{%default-modules})
+This is the list of modules that must be in scope when @code{start} and
+@code{stop} are evaluated.
+
+@item @code{imported-modules} (default: @var{%default-imported-modules})
+This is the list of modules to import in the execution environment of
+dmd.
+
@end table
@end deftp
diff --git a/gnu/services/dmd.scm b/gnu/services/dmd.scm
index 80dee4fb18..76f286a672 100644
--- a/gnu/services/dmd.scm
+++ b/gnu/services/dmd.scm
@@ -45,6 +45,11 @@
dmd-service-start
dmd-service-stop
dmd-service-auto-start?
+ dmd-service-modules
+ dmd-service-imported-modules
+
+ %default-imported-modules
+ %default-modules
dmd-service-back-edges))
@@ -99,6 +104,22 @@ service that extends DMD-ROOT-SERVICE-TYPE and nothing else."
(list (service-extension dmd-root-service-type
(compose list proc))))))
+(define %default-imported-modules
+ ;; Default set of modules imported for a service's consumption.
+ '((guix build utils)
+ (guix build syscalls)
+ (gnu build file-systems)))
+
+(define %default-modules
+ ;; Default set of modules visible in a service's file.
+ `((dmd service)
+ (oop goops)
+ (ice-9 ftw)
+ (guix build utils)
+ (guix build syscalls)
+ ((gnu build file-systems)
+ #:select (check-file-system canonicalize-device-spec))))
+
(define-record-type* <dmd-service>
dmd-service make-dmd-service
dmd-service?
@@ -113,7 +134,11 @@ service that extends DMD-ROOT-SERVICE-TYPE and nothing else."
(stop dmd-service-stop ;g-expression (procedure)
(default #~(const #f)))
(auto-start? dmd-service-auto-start? ;Boolean
- (default #t)))
+ (default #t))
+ (modules dmd-service-modules ;list of module names
+ (default %default-modules))
+ (imported-modules dmd-service-imported-modules ;list of module names
+ (default %default-imported-modules)))
(define (assert-valid-graph services)
@@ -158,41 +183,51 @@ which is undefined")
(for-each assert-satisfied-requirements services))
+(define (dmd-service-file-name service)
+ "Return the file name where the initialization code for SERVICE is to be
+stored."
+ (let ((provisions (string-join (map symbol->string
+ (dmd-service-provision service)))))
+ (string-append "dmd-"
+ (string-map (match-lambda
+ (#\/ #\-)
+ (chr chr))
+ provisions)
+ ".scm")))
+
+(define (dmd-service-file service)
+ "Return a file defining SERVICE."
+ (gexp->file (dmd-service-file-name service)
+ #~(begin
+ (use-modules #$@(dmd-service-modules service))
+
+ (make <service>
+ #:docstring '#$(dmd-service-documentation service)
+ #:provides '#$(dmd-service-provision service)
+ #:requires '#$(dmd-service-requirement service)
+ #:respawn? '#$(dmd-service-respawn? service)
+ #:start #$(dmd-service-start service)
+ #:stop #$(dmd-service-stop service)))))
+
(define (dmd-configuration-file services)
"Return the dmd configuration file for SERVICES."
(define modules
- ;; Extra modules visible to dmd.conf.
- '((guix build syscalls)
- (gnu build file-systems)
- (guix build utils)))
+ (delete-duplicates
+ (append-map dmd-service-imported-modules services)))
(assert-valid-graph services)
(mlet %store-monad ((modules (imported-modules modules))
- (compiled (compiled-modules modules)))
+ (compiled (compiled-modules modules))
+ (files (mapm %store-monad dmd-service-file services)))
(define config
#~(begin
(eval-when (expand load eval)
(set! %load-path (cons #$modules %load-path))
(set! %load-compiled-path
- (cons #$compiled %load-compiled-path)))
-
- (use-modules (ice-9 ftw)
- (guix build syscalls)
- (guix build utils)
- ((gnu build file-systems)
- #:select (check-file-system canonicalize-device-spec)))
-
- (register-services
- #$@(map (lambda (service)
- #~(make <service>
- #:docstring '#$(dmd-service-documentation service)
- #:provides '#$(dmd-service-provision service)
- #:requires '#$(dmd-service-requirement service)
- #:respawn? '#$(dmd-service-respawn? service)
- #:start #$(dmd-service-start service)
- #:stop #$(dmd-service-stop service)))
- services))
+ (cons #$compiled %load-compiled-path)))
+
+ (apply register-services (map primitive-load '#$files))
;; guix-daemon 0.6 aborts if 'PATH' is undefined, so work around it.
(setenv "PATH" "/run/current-system/profile/bin")