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-rw-r--r--guix/build/cmake-build-system.scm1
1 files changed, 1 insertions, 0 deletions
diff --git a/guix/build/cmake-build-system.scm b/guix/build/cmake-build-system.scm
index f57622e0f4..27f2b5c872 100644
--- a/guix/build/cmake-build-system.scm
+++ b/guix/build/cmake-build-system.scm
@@ -66,6 +66,7 @@
 (define* (check #:key (tests? #t) (parallel-tests? #t) (test-target "test")
                 #:allow-other-keys)
   (let ((gnu-check (assoc-ref gnu:%standard-phases 'check)))
+    (setenv "CTEST_OUTPUT_ON_FAILURE" "1")
     (gnu-check #:tests? tests? #:test-target test-target
               #:parallel-tests? parallel-tests?)))