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guix system: init: Overwrite the items in the target store.

Fixes <http://bugs.gnu.org/20722>.
Reported by Eric Bavier <ericbavier@openmailbox.org>.

* guix/scripts/system.scm (copy-item): Check whether DEST exists and remove it
  if it does.
gn-latest-20200428
Ludovic Courtès 6 years ago
parent
commit
78acff7c11
  1. 7
      guix/scripts/system.scm

7
guix/scripts/system.scm

@ -76,6 +76,13 @@
(let ((dest (string-append target item))
(state (string-append target "/var/guix")))
(format log-port "copying '~a'...~%" item)
;; Remove DEST if it exists to make sure that (1) we do not fail badly
;; while trying to overwrite it (see <http://bugs.gnu.org/20722>), and
;; (2) we end up with the right contents.
(when (file-exists? dest)
(delete-file-recursively dest))
(copy-recursively item dest
#:log (%make-void-port "w"))

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