@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2014, 2015, 2016, 2017, 2019 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2014-2017, 2019, 2024 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
;;;
@@ -117,9 +117,11 @@ (define* (hg-fetch ref hash-algo hash
(parameterize ((%verify-swh-certificate? #f))
(format (current-error-port)
"Trying to download from Software Heritage...~%")
- (swh-download #$(hg-reference-url ref)
- #$(hg-reference-changeset ref)
- #$output)))))))
+ (or (swh-download-directory-by-nar-hash #$hash '#$hash-algo
+ #$output)
+ (swh-download #$(hg-reference-url ref)
+ #$(hg-reference-changeset ref)
+ #$output))))))))
(mlet %store-monad ((guile (package->derivation guile system)))
(gexp->derivation (or name "hg-checkout") build