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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2018 Ludovic Courtès <>
;;; This file is part of GNU Guix.
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; GNU General Public License for more details.
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <>.
(define-module (gnu packages gcal)
#:use-module (guix packages)
#:use-module (guix download)
#:use-module (guix build-system gnu)
#:use-module (guix licenses))
(define-public gcal
(name "gcal")
(version "4.1")
(source (origin
(method url-fetch)
(uri (string-append "mirror://gnu/gcal/gcal-"
version ".tar.xz"))
(modules '((guix build utils)))
;; Adjust the bundled gnulib to work with glibc 2.28. See e.g.
;; "m4-gnulib-libio.patch". This is a phase rather than patch
;; or snippet to work around <>.
(substitute* (find-files "lib" "\\.c$")
(("#if defined _IO_ftrylockfile")
"#if defined _IO_EOF_SEEN"))
(substitute* "lib/stdio-impl.h"
(("^/\\* BSD stdio derived implementations")
(string-append "#if !defined _IO_IN_BACKUP && defined _IO_EOF_SEEN\n"
"# define _IO_IN_BACKUP 0x100\n"
"/* BSD stdio derived implementations")))
(build-system gnu-build-system)
(home-page "")
(synopsis "Calculating and printing a wide variety of calendars")
"Gcal is a program to calculate and print calendars on the
command-line. Calendars can be printed in 1-month, 3-month or whole-year
views. In addition, eternal holiday lists can be generated for many
countries, which can be complemented by user-made lists of fixed dates to
make an agenda. Gcal can also calculate astronomical data, such as the
phases of the moon, and supports alternative calendar formats: Julian,
Gregorian, Islamic, Chinese and more.")
(license gpl3+)))