Reported by Matthew Jordan <matthewjordandevops@yandex.com>
at <https://lists.gnu.org/archive/html/guix-devel/2016-05/msg00967.html>.
* gnu/system/install.scm (make-cow-store): Bind-mount TARGET's /tmp
on /tmp.
(chmod #$directory #o1775)))
#~(begin
+ ;; Bind-mount TARGET's /tmp in case we need space to build things.
+ (let ((tmpdir (string-append #$target "/tmp")))
+ (mkdir-p tmpdir)
+ (mount tmpdir "/tmp" "none" MS_BIND))
+
(unless (file-exists? "/.ro-store")
(mkdir "/.ro-store")
(mount #$(%store-prefix) "/.ro-store" "none"