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-rw-r--r--guix/memoization.scm5
1 files changed, 3 insertions, 2 deletions
diff --git a/guix/memoization.scm b/guix/memoization.scm
index 5cae283610..bf3b73d806 100644
--- a/guix/memoization.scm
+++ b/guix/memoization.scm
@@ -76,10 +76,11 @@ the result is returned via (apply values results)."
exactly one value."
((_ cached () body ...)
;; The zero-argument case is equivalent to a promise.
- (let ((result #f) (cached? #f))
+ (let ((result #f) (cached? #f)
+ (compute (lambda () body ...)))
(lambda ()
(unless cached?
- (set! result (begin body ...))
+ (set! result (compute))
(set! cached? #t))
result)))