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-rw-r--r--guix/build/syscalls.scm4
1 files changed, 2 insertions, 2 deletions
diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm
index 6be322d68f..d69b178a0a 100644
--- a/guix/build/syscalls.scm
+++ b/guix/build/syscalls.scm
@@ -2052,8 +2052,8 @@ correspond to a terminal, return the value returned by FALL-BACK."
         ;; would return EINVAL instead in some cases:
         ;; <https://bugs.ruby-lang.org/issues/10494>.
         ;; Furthermore, some FUSE file systems like unionfs return ENOSYS for
-        ;; that ioctl.
-        (if (memv errno (list ENOTTY EINVAL ENOSYS))
+        ;; that ioctl, and bcachefs returns EPERM.
+        (if (memv errno (list ENOTTY EINVAL ENOSYS EPERM))
             (fall-back)
             (apply throw args))))))