guix-devel/gnu/packages/ntp.scm

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;;; GNU Guix --- Functional package management for GNU
;;; Copyright 2014 John Darrington <jmd@gnu.org>
;;;
;;; 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
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; 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 <http://www.gnu.org/licenses/>.
(define-module (gnu packages ntp)
#:use-module (gnu packages)
#:use-module (gnu packages which)
#:use-module (gnu packages linux)
#:use-module (guix licenses)
#:use-module (guix packages)
#:use-module (guix download)
#:use-module (guix build-system gnu)
#:use-module (srfi srfi-1))
(define-public ntp
(package
(name "ntp")
(version "4.2.6p5")
(source (origin
(method url-fetch)
(uri (string-append
"http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-"
(string-join (take (string-split version #\.) 2) ".")
"/ntp-" version ".tar.gz"))
(sha256
(base32
"077r69a41hasl8zf5c44km7cqgfhrkaj6a4jnr75j7nkz5qq7ayn"))))
(native-inputs `(("which" ,which)))
(inputs
;; Build with POSIX capabilities support on GNU/Linux. This allows 'ntpd'
;; to run as non-root (when invoked with '-u'.)
(if (string-suffix? "-linux"
(or (%current-target-system) (%current-system)))
`(("libcap" ,libcap))
'()))
(build-system gnu-build-system)
(synopsis "Real time clock synchonization system")
(description "NTP is a system designed to synchronize the clocks of
computers over a network.")
(license (x11-style
"http://www.eecis.udel.edu/~mills/ntp/html/copyright.html"
"A non-copyleft free licence from the University of Delaware"))
(home-page "http://www.ntp.org")))