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-rw-r--r--guix/derivations.scm5
1 files changed, 3 insertions, 2 deletions
diff --git a/guix/derivations.scm b/guix/derivations.scm
index cf329819c4..3c433a2685 100644
--- a/guix/derivations.scm
+++ b/guix/derivations.scm
@@ -469,8 +469,9 @@ in SIZE bytes."
(drv (make-derivation outputs inputs sources
system builder args env-vars)))
(sha256
- (string->utf8 (call-with-output-string
- (cut write-derivation drv <>))))))))))
+ (with-fluids ((%default-port-encoding "UTF-8"))
+ (string->utf8 (call-with-output-string
+ (cut write-derivation drv <>)))))))))))
(define (store-path type hash name) ; makeStorePath
"Return the store path for NAME/HASH/TYPE."