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-rw-r--r--guix/build-system/python.scm5
1 files changed, 4 insertions, 1 deletions
diff --git a/guix/build-system/python.scm b/guix/build-system/python.scm
index a51c033d01e..8bdf84125a1 100644
--- a/guix/build-system/python.scm
+++ b/guix/build-system/python.scm
@@ -103,7 +103,10 @@ pre-defined variants."
=> force)
;; Otherwise build the new package object graph.
- ((eq? (package-build-system p) python-build-system)
+ ((or (eq? (package-build-system p) python-build-system)
+ (eq? (package-build-system p)
+ ;; Resolve lazily.
+ (@* (guix build-system pyproject) pyproject-build-system)))
(package/inherit p
(location (package-location p))
(name (let ((name (package-name p)))