211 lines
8.3 KiB
EmacsLisp
211 lines
8.3 KiB
EmacsLisp
;;; guix-messages.el --- Minibuffer messages
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;; Copyright © 2014, 2015 Alex Kost <alezost@gmail.com>
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;; This file is part of GNU Guix.
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;; GNU Guix is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Guix is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This file provides `guix-result-message' function used to show a
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;; minibuffer message after displaying packages/generations in a
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;; list/info buffer.
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;;; Code:
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(require 'cl-lib)
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(require 'guix-utils)
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(defvar guix-messages
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`((package
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(id
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,(lambda (_ entries ids)
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(guix-message-packages-by-id entries 'package ids)))
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(name
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,(lambda (_ entries names)
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(guix-message-packages-by-name entries 'package names)))
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(regexp
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(0 "No packages matching '%s'." val)
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(1 "A single package matching '%s'." val)
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(many "%d packages matching '%s'." count val))
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(all-available
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(0 "No packages are available for some reason.")
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(1 "A single available package (that's strange).")
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(many "%d available packages." count))
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(newest-available
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(0 "No packages are available for some reason.")
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(1 "A single newest available package (that's strange).")
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(many "%d newest available packages." count))
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(installed
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(0 "No packages installed in profile '%s'." profile)
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(1 "A single package installed in profile '%s'." profile)
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(many "%d packages installed in profile '%s'." count profile))
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(obsolete
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(0 "No obsolete packages in profile '%s'." profile)
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(1 "A single obsolete package in profile '%s'." profile)
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(many "%d obsolete packages in profile '%s'." count profile)))
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(output
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(id
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,(lambda (_ entries ids)
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(guix-message-packages-by-id entries 'output ids)))
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(name
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,(lambda (_ entries names)
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(guix-message-packages-by-name entries 'output names)))
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(regexp
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(0 "No package outputs matching '%s'." val)
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(1 "A single package output matching '%s'." val)
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(many "%d package outputs matching '%s'." count val))
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(all-available
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(0 "No package outputs are available for some reason.")
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(1 "A single available package output (that's strange).")
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(many "%d available package outputs." count))
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(newest-available
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(0 "No package outputs are available for some reason.")
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(1 "A single newest available package output (that's strange).")
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(many "%d newest available package outputs." count))
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(installed
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(0 "No package outputs installed in profile '%s'." profile)
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(1 "A single package output installed in profile '%s'." profile)
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(many "%d package outputs installed in profile '%s'." count profile))
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(obsolete
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(0 "No obsolete package outputs in profile '%s'." profile)
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(1 "A single obsolete package output in profile '%s'." profile)
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(many "%d obsolete package outputs in profile '%s'." count profile))
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(profile-diff
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guix-message-outputs-by-diff))
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(generation
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(id
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(0 "Generations not found.")
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(1 "")
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(many "%d generations." count))
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(last
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(0 "No generations in profile '%s'." profile)
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(1 "The last generation of profile '%s'." profile)
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(many "%d last generations of profile '%s'." count profile))
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(all
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(0 "No generations in profile '%s'." profile)
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(1 "A single generation available in profile '%s'." profile)
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(many "%d generations available in profile '%s'." count profile))
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(time
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guix-message-generations-by-time))))
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(defun guix-message-string-name (name)
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"Return a quoted name string."
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(concat "'" name "'"))
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(defun guix-message-string-entry-type (entry-type &optional plural)
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"Return a string denoting an ENTRY-TYPE."
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(cl-ecase entry-type
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(package
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(if plural "packages" "package"))
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(output
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(if plural "package outputs" "package output"))
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(generation
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(if plural "generations" "generation"))))
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(defun guix-message-string-entries (count entry-type)
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"Return a string denoting the COUNT of ENTRY-TYPE entries."
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(cl-case count
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(0 (concat "No "
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(guix-message-string-entry-type
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entry-type 'plural)))
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(1 (concat "A single "
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(guix-message-string-entry-type
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entry-type)))
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(t (format "%d %s"
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count
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(guix-message-string-entry-type
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entry-type 'plural)))))
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(defun guix-message-packages-by-id (entries entry-type ids)
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"Display a message for packages or outputs searched by IDS."
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(let* ((count (length entries))
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(str-beg (guix-message-string-entries count entry-type))
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(str-end (if (> count 1)
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(concat "with the following IDs: "
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(mapconcat #'guix-get-string ids ", "))
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(concat "with ID " (guix-get-string (car ids))))))
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(if (zerop count)
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(message "%s %s.
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Most likely, Guix REPL was restarted, so IDs are not actual
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anymore, because they live only during the REPL process.
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Try \"M-x guix-search-by-name\"."
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str-beg str-end)
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(message "%s %s." str-beg str-end))))
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(defun guix-message-packages-by-name (entries entry-type names)
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"Display a message for packages or outputs searched by NAMES."
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(let* ((count (length entries))
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(str-beg (guix-message-string-entries count entry-type))
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(str-end (if (cdr names)
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(concat "matching the following names: "
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(mapconcat #'guix-message-string-name
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names ", "))
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(concat "with name "
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(guix-message-string-name (car names))))))
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(message "%s %s." str-beg str-end)))
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(defun guix-message-generations-by-time (profile entries times)
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"Display a message for generations searched by TIMES."
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(let* ((count (length entries))
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(str-beg (guix-message-string-entries count 'generation))
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(time-beg (guix-get-time-string (car times)))
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(time-end (guix-get-time-string (cadr times))))
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(message (concat "%s of profile '%s'\n"
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"matching time period '%s' - '%s'.")
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str-beg profile time-beg time-end)))
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(defun guix-message-outputs-by-diff (_ entries profiles)
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"Display a message for outputs searched by PROFILES difference."
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(let* ((count (length entries))
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(str-beg (guix-message-string-entries count 'output))
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(profile1 (car profiles))
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(profile2 (cadr profiles)))
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(cl-multiple-value-bind (new old str-action)
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(if (string-lessp profile2 profile1)
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(list profile1 profile2 "added to")
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(list profile2 profile1 "removed from"))
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(message "%s %s profile '%s' comparing with profile '%s'."
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str-beg str-action new old))))
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(defun guix-result-message (profile entries entry-type
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search-type search-vals)
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"Display an appropriate message after displaying ENTRIES."
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(let* ((type-spec (guix-assq-value guix-messages
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(if (eq entry-type 'system-generation)
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'generation
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entry-type)
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search-type))
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(fun-or-count-spec (car type-spec)))
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(if (functionp fun-or-count-spec)
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(funcall fun-or-count-spec profile entries search-vals)
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(let* ((count (length entries))
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(count-key (if (> count 1) 'many count))
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(msg-spec (guix-assq-value type-spec count-key))
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(msg (car msg-spec))
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(args (cdr msg-spec)))
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(mapc (lambda (subst)
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(setq args (cl-substitute (cdr subst) (car subst) args)))
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`((count . ,count)
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(val . ,(car search-vals))
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(profile . ,profile)))
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(apply #'message msg args)))))
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(provide 'guix-messages)
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;;; guix-messages.el ends here
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