diff options
Diffstat (limited to 'guix/channels.scm')
| -rw-r--r-- | guix/channels.scm | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/guix/channels.scm b/guix/channels.scm index aca8302ba0..f0174de767 100644 --- a/guix/channels.scm +++ b/guix/channels.scm @@ -347,6 +347,21 @@ to '%package-module-path'." (((predicate . guile) rest ...) (if (predicate source) (guile) (loop rest)))))) +(define (call-with-guile guile thunk) + (lambda (store) + (values (parameterize ((%guile-for-build + (if guile + (package-derivation store guile) + (%guile-for-build)))) + (run-with-store store (thunk))) + store))) + +(define-syntax-rule (with-guile guile exp ...) + "Set GUILE as the '%guile-for-build' parameter for the dynamic extent of +EXP, a series of monadic expressions." + (call-with-guile guile (lambda () + (mbegin %store-monad exp ...)))) + (define (with-trivial-build-handler mvalue) "Run MVALUE, a monadic value, with a \"trivial\" build handler installed that unconditionally resumes the continuation." @@ -385,10 +400,7 @@ package modules under SOURCE using CORE, an instance of Guix." ;; Note: BUILD can return #f if it does not support %PULL-VERSION. In ;; the future we'll fall back to a previous version of the protocol ;; when that happens. - (mbegin %store-monad - (mwhen guile - (set-guile-for-build guile)) - + (with-guile guile ;; BUILD is usually quite costly. Install a "trivial" build handler ;; so we don't bounce an outer build-accumulator handler that could ;; cause us to redo half of the BUILD computation several times just @@ -750,3 +762,7 @@ NEW. When OLD is omitted or is #f, return all the news entries of CHANNEL." (if (= GIT_ENOTFOUND (git-error-code error)) '() (apply throw key error rest))))) + +;;; Local Variables: +;;; eval: (put 'with-guile 'scheme-indent-function 1) +;;; End: |