[bug#30420] [PATCH 1/1] union: Wrap collisions with newlines.

[Oleg Pykhalov]

* guix/build/union.scm (union-build): Wrap collisions with newlines.
---
 guix/build/union.scm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/guix/build/union.scm b/guix/build/union.scm
index 256123c56..d46b75003 100644
--- a/guix/build/union.scm
+++ b/guix/build/union.scm
@@ -93,7 +93,7 @@ make sure the caller can modify them later."
     (cond ((null? dirs)
            ;; The inputs are all files.
            (format (current-error-port)
-                   "warning: collision encountered: ~{~a ~}~%"
+                   "~%warning: collision encountered:~%~{~a~%~}"
                    files)
 
            (let ((file (first files)))
-- 
2.15.1