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-rw-r--r--guix/scripts/deploy.scm19
1 files changed, 19 insertions, 0 deletions
diff --git a/guix/scripts/deploy.scm b/guix/scripts/deploy.scm
index a82dde00a4..d4d07bea5a 100644
--- a/guix/scripts/deploy.scm
+++ b/guix/scripts/deploy.scm
@@ -1,6 +1,7 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 David Thompson <davet@gnu.org>
;;; Copyright © 2019 Jakob L. Kreuze <zerodaysfordays@sdf.org>
+;;; Copyright © 2020 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -97,6 +98,22 @@ Perform the deployment specified by FILE.\n"))
environment-modules))))
(load* file module)))
+(define (show-what-to-deploy machines)
+ "Show the list of machines to deploy, MACHINES."
+ (let ((count (length machines)))
+ (format (current-error-port)
+ (N_ "The following ~*machine will be deployed:~%"
+ "The following ~d machines will be deployed:~%"
+ count)
+ count)
+ (display (indented-string
+ (fill-paragraph (string-join (map machine-display-name machines)
+ ", ")
+ (- (%text-width) 2) 2)
+ 2)
+ (current-error-port))
+ (display "\n\n" (current-error-port))))
+
(define (guix-deploy . args)
(define (handle-argument arg result)
(alist-cons 'file arg result))
@@ -105,6 +122,8 @@ Perform the deployment specified by FILE.\n"))
#:argument-handler handle-argument))
(file (assq-ref opts 'file))
(machines (or (and file (load-source-file file)) '())))
+ (show-what-to-deploy machines)
+
(with-status-verbosity (assoc-ref opts 'verbosity)
(with-store store
(set-build-options-from-command-line store opts)