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time-machine: Warn when no command is given.

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* guix/scripts/time-machine.scm (guix-time-machine): Emit a warning when
COMMAND-LINE is false.

Change-Id: I26e6b608915ecaf6d9372f9b03dc5ebd1b4c68f9
This commit is contained in:
Ludovic Courtès 2023-10-28 15:58:54 +02:00
parent ab13e2be69
commit 331d858e21
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GPG key ID: 090B11993D9AEBB5
1 changed files with 19 additions and 18 deletions
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37
guix/scripts/time-machine.scm
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@ -179,21 +179,22 @@ (define-command (guix-time-machine . args)
(ref (assoc-ref opts 'ref))
(substitutes? (assoc-ref opts 'substitutes?))
(authenticate? (assoc-ref opts 'authenticate-channels?)))
(when command-line
(let* ((directory
(with-store store
(with-status-verbosity (assoc-ref opts 'verbosity)
(with-build-handler (build-notifier #:use-substitutes?
substitutes?
#:verbosity
(assoc-ref opts 'verbosity)
#:dry-run? #f)
(set-build-options-from-command-line store opts)
(cached-channel-instance store channels
#:authenticate? authenticate?
#:reference-channels
%reference-channels
#:validate-channels
validate-guix-channel)))))
(executable (string-append directory "/bin/guix")))
(apply execl (cons* executable executable command-line))))))))
(if command-line
(let* ((directory
(with-store store
(with-status-verbosity (assoc-ref opts 'verbosity)
(with-build-handler (build-notifier #:use-substitutes?
substitutes?
#:verbosity
(assoc-ref opts 'verbosity)
#:dry-run? #f)
(set-build-options-from-command-line store opts)
(cached-channel-instance store channels
#:authenticate? authenticate?
#:reference-channels
%reference-channels
#:validate-channels
validate-guix-channel)))))
(executable (string-append directory "/bin/guix")))
(apply execl (cons* executable executable command-line)))
(warning (G_ "no command specified; nothing to do~%")))))))