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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2013 Ludovic Courtès <ludo@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 libevent)
+ #:use-module (gnu packages)
+ #:use-module (guix licenses)
+ #:use-module (guix packages)
+ #:use-module (guix download)
+ #:use-module (guix build-system gnu)
+ #:use-module (gnu packages which)
+ #:use-module (gnu packages python))
+
+(define-public libevent
+ (package
+ (name "libevent")
+ (version "2.0.21")
+ (source (origin
+ (method url-fetch)
+ (uri (string-append
+ "https://github.com/downloads/libevent/libevent/libevent-"
+ version
+ "-stable.tar.gz"))
+ (sha256
+ (base32
+ "1xblymln9vihdmf1aqkp8chwvnhpdch3786bh30bj75slnl31992"))))
+ (build-system gnu-build-system)
+ (inputs
+ `(("patch/dns-tests" ,(search-patch "libevent-dns-tests.patch"))
+
+ ;; Dependencies used for the tests and for `event_rpcgen.py'.
+ ("which" ,which)
+ ("python" ,python)))
+ (arguments
+ '(#:patches (list (assoc-ref %build-inputs "patch/dns-tests"))))
+ (home-page "http://libevent.org/")
+ (synopsis
+ "libevent, an event notification library")
+ (description
+ "The libevent API provides a mechanism to execute a callback
+function when a specific event occurs on a file descriptor or after a
+timeout has been reached. Furthermore, libevent also support callbacks
+due to signals or regular timeouts.
+
+libevent is meant to replace the event loop found in event driven
+network servers. An application just needs to call event_dispatch() and
+then add or remove events dynamically without having to change the event
+loop.")
+ (license bsd-3)))