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| author | Ludovic Courtès <ludo@gnu.org> | 2016-07-04 22:19:23 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2016-07-12 22:47:08 +0200 |
| commit | dd8d1a30468dae1412762e54801592f6b475f88e (patch) | |
| tree | a452600af230d6b387379cf982bc66081c347452 | |
| parent | 43dcce8674d9c7d72db4f3f5aae590cea788d5b4 (diff) | |
| download | patches-dd8d1a30468dae1412762e54801592f6b475f88e.tar patches-dd8d1a30468dae1412762e54801592f6b475f88e.tar.gz | |
gexp: Factorize load-path-setting expression.
* guix/gexp.scm (load-path-expression): New procedure.
(gexp->script): Use it.
| -rw-r--r-- | guix/gexp.scm | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/guix/gexp.scm b/guix/gexp.scm index e9274a05f4..e76a281bba 100644 --- a/guix/gexp.scm +++ b/guix/gexp.scm @@ -990,6 +990,18 @@ they can refer to each other." (module-ref (resolve-interface '(gnu packages commencement)) 'guile-final)) +(define (load-path-expression modules) + "Return as a monadic value a gexp that sets '%load-path' and +'%load-compiled-path' to point to MODULES, a list of module names." + (mlet %store-monad ((modules (imported-modules modules)) + (compiled (compiled-modules modules))) + (return (gexp (eval-when (expand load eval) + (set! %load-path + (cons (ungexp modules) %load-path)) + (set! %load-compiled-path + (cons (ungexp compiled) + %load-compiled-path))))))) + (define* (gexp->script name exp #:key (modules '()) (guile (default-guile))) "Return an executable script NAME that runs EXP using GUILE with MODULES in @@ -997,8 +1009,7 @@ its search path." (define %modules (append (gexp-modules exp) modules)) - (mlet %store-monad ((modules (imported-modules %modules)) - (compiled (compiled-modules %modules))) + (mlet %store-monad ((set-load-path (load-path-expression %modules))) (gexp->derivation name (gexp (call-with-output-file (ungexp output) @@ -1011,16 +1022,7 @@ its search path." "#!~a/bin/guile --no-auto-compile~%!#~%" (ungexp guile)) - ;; Write the 'eval-when' form so that it can be - ;; compiled. - (write - '(eval-when (expand load eval) - (set! %load-path - (cons (ungexp modules) %load-path)) - (set! %load-compiled-path - (cons (ungexp compiled) - %load-compiled-path))) - port) + (write '(ungexp set-load-path) port) (write '(ungexp exp) port) (chmod port #o555))))))) |