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1;;; GNU Guix --- Functional package management for GNU
2;;; Copyright © 2018 Christopher Baines <[email protected]>
3;;; Copyright © 2020 Brice Waegeneire <[email protected]>
4;;; Copyright © 2020, 2022 Tobias Geerinckx-Rice <[email protected]>
5;;; Copyright © 2022, 2024-2026 Sharlatan Hellseher <[email protected]>
6;;; Copyright © 2023 Benjamin <[email protected]>
7;;; Copyright © 2024 jgart <[email protected]>
8;;; Copyright © 2024 Jordan Moore <[email protected]>
9;;; Copyright © 2025 Artur Wroblewski <[email protected]>
10;;;
11;;; This file is part of GNU Guix.
12;;;
13;;; This program is free software: you can redistribute it and/or modify
14;;; it under the terms of the GNU General Public License as published by
15;;; the Free Software Foundation, either version 3 of the License, or
16;;; (at your option) any later version.
17;;;
18;;; This program is distributed in the hope that it will be useful,
19;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
20;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21;;; GNU General Public License for more details.
22;;;
23;;; You should have received a copy of the GNU General Public License
24;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
25
26;;; Commentary:
27
28;; This module provides package definitions related for High Availability (HA)
29;; software, which come as foundation to create clusterization and load
30;; balancing of services.
31
32;;; Code:
33
34(define-module (gnu packages high-availability)
35 #:use-module (gnu packages autotools)
36 #:use-module (gnu packages base)
37 #:use-module (gnu packages bash)
38 #:use-module (gnu packages check)
39 #:use-module (gnu packages cluster)
40 #:use-module (gnu packages compression)
41 #:use-module (gnu packages crypto)
42 #:use-module (gnu packages documentation)
43 #:use-module (gnu packages elixir)
44 #:use-module (gnu packages erlang)
45 #:use-module (gnu packages gcc)
46 #:use-module (gnu packages gettext)
47 #:use-module (gnu packages glib)
48 #:use-module (gnu packages golang-build)
49 #:use-module (gnu packages golang-check)
50 #:use-module (gnu packages golang-compression)
51 #:use-module (gnu packages golang-crypto)
52 #:use-module (gnu packages golang-web)
53 #:use-module (gnu packages golang-xyz)
54 #:use-module (gnu packages hardware)
55 #:use-module (gnu packages libevent)
56 #:use-module (gnu packages linux)
57 #:use-module (gnu packages lua)
58 #:use-module (gnu packages networking)
59 #:use-module (gnu packages nss)
60 #:use-module (gnu packages pcre)
61 #:use-module (gnu packages pkg-config)
62 #:use-module (gnu packages python)
63 #:use-module (gnu packages rsync)
64 #:use-module (gnu packages sqlite)
65 #:use-module (gnu packages tls)
66 #:use-module (gnu packages valgrind)
67 #:use-module (gnu packages version-control)
68 #:use-module (gnu packages xml)
69 #:use-module (gnu packages)
70 #:use-module (guix build-system gnu)
71 #:use-module (guix build-system go)
72 #:use-module (guix download)
73 #:use-module (guix gexp)
74 #:use-module (guix git-download)
75 #:use-module (guix packages)
76 #:use-module (guix utils)
77 #:use-module ((guix licenses)
78 #:prefix license:))
79
80(define-public cowsql
81 (package
82 (name "cowsql")
83 (version "1.15.9")
84 (source
85 (origin
86 (method git-fetch)
87 (uri (git-reference
88 (url "https://github.com/cowsql/cowsql")
89 (commit (string-append "v" version))))
90 (file-name (git-file-name name version))
91 (sha256
92 (base32 "10pj422lzl0rbid4cxg80rhzgqbz3mnhnhx8s0zm54nniirdbn7d"))))
93 (build-system gnu-build-system)
94 (arguments
95 (list
96 #:phases
97 #~(modify-phases %standard-phases
98 (replace 'bootstrap
99 (lambda _
100 (invoke "autoreconf" "-vfi"))))))
101 (native-inputs
102 (list autoconf
103 automake
104 libtool
105 pkg-config))
106 (inputs
107 (list cowsql-raft
108 libuv
109 sqlite))
110 (home-page "https://github.com/cowsql/cowsql")
111 (synopsis "Embeddable, replicated and fault tolerant SQL engine")
112 (description
113 "cowsql (/ˈkaʊ,siːkwəl/ listen) is a C library that implements an
114embeddable and replicated SQL database engine with high availability and
115automatic failover.
116
117cowsql extends SQLite with a network protocol that can connect together
118various instances of your application and have them act as a highly-available
119cluster, with no dependency on external databases.")
120 (license license:gpl3+)))
121
122(define-public cowsql-raft
123 (package
124 (name "cowsql-raft")
125 (version "0.22.1")
126 (source
127 (origin
128 (method git-fetch)
129 (uri (git-reference
130 (url "https://github.com/cowsql/raft")
131 (commit (string-append "v" version))))
132 (file-name (git-file-name name version))
133 (sha256
134 (base32 "1cs70jlc2hg3hrcwpc4h54l4zpwm287mlamdm7gxhpdw7c0kyv38"))))
135 (build-system gnu-build-system)
136 (arguments
137 (list
138 #:phases
139 #~(modify-phases %standard-phases
140 (replace 'bootstrap
141 (lambda _
142 (invoke "autoreconf" "-vfi"))))))
143 (native-inputs
144 (list autoconf
145 automake
146 libtool
147 pkg-config))
148 (inputs
149 (list libuv
150 lz4))
151 (home-page "https://github.com/cowsql/raft")
152 (synopsis "Asynchronous C implementation of the Raft consensus protocol")
153 (description
154 "This package implements a Raft algorithm logic (no I/O and no system
155calls). On top of that, various drivers are provided that implement actual
156network communication and persistent data storage.
157
158The core part of the library is designed to work well with asynchronous or
159non-blocking I/O engines (such as libuv and io_uring), although it can be used
160in threaded or blocking contexts as well.")
161 (license license:lgpl3)))
162
163(define-public haproxy
164 (package
165 (name "haproxy")
166 (version "3.2.7")
167 (source
168 (origin
169 (method url-fetch)
170 ;; TODO: Switch to git-fetch: <https://git.haproxy.org/>.
171 (uri (string-append "https://www.haproxy.org/download/"
172 (version-major+minor version)
173 "/src/haproxy-" version ".tar.gz"))
174 (sha256
175 (base32 "0y22ypxhiw7s2v7lc309w24asxq83a9xyk3frgay46dkn3gyj2hz"))))
176 (build-system gnu-build-system)
177 (arguments
178 (list
179 #:tests? #f ; there are only regression tests, using varnishtest
180 #:make-flags
181 #~(list "LUA_LIB_NAME=lua"
182 "TARGET=linux-glibc"
183 "USE_LUA=1"
184 "USE_OPENSSL=1"
185 "USE_PCRE2=1"
186 "USE_PCRE2_JIT=1"
187 "USE_PROMEX=1"
188 "USE_ZLIB=1"
189 (string-append "CC=" #$(cc-for-target))
190 (string-append "DOCDIR=" #$output "/share/" #$name)
191 (string-append "LUA_INC=" #$(this-package-input "lua") "/include")
192 (string-append "LUA_LIB=" #$(this-package-input "lua") "/lib")
193 (string-append "PREFIX=" #$output))
194 #:phases
195 #~(modify-phases %standard-phases
196 (delete 'configure))))
197 (inputs
198 (list libxcrypt lua openssl pcre2 zlib))
199 (home-page "https://www.haproxy.org/")
200 (synopsis "Reliable, high performance TCP/HTTP load balancer")
201 (description "HAProxy offers @acronym{HA, high availability}, load
202balancing, and proxying for TCP and HTTP-based applications. It is particularly
203suited to Web sites crawling under very high loads while needing persistence or
204Layer 7 processing. Supporting tens of thousands of connections is clearly
205realistic with today's hardware.")
206 (license (list license:gpl2+
207 license:lgpl2.1
208 license:lgpl2.1+))))
209
210(define-public libqb
211 (package
212 (name "libqb")
213 (version "2.0.9")
214 (source (origin
215 (method url-fetch)
216 (uri (string-append
217 "https://github.com/ClusterLabs/libqb/releases/download/v"
218 version "/libqb-" version ".tar.xz"))
219 (sha256
220 (base32
221 "02r1dc5m0xjf8hq14x87injw0smmh677f5gnd5xa91lw359kga31"))))
222 (build-system gnu-build-system)
223 (native-inputs (list pkg-config))
224 (inputs (list libxml2))
225 (home-page "https://clusterlabs.github.io/libqb/")
226 (synopsis
227 "Library providing high-performance logging, tracing, IPC, and polling")
228 (description
229 "Libqb is a library with the primary purpose of providing
230high-performance, reusable features for client-server architecture, such as
231logging, tracing, @acronym{IPC, inter-process communication} and polling. Libqb
232is not intended to be an all-encompassing library, but instead provide focused
233APIs that are highly tuned for maximum performance for client-server
234applications.")
235 (license license:lgpl2.1)))
236
237(define-public kronosnet
238 (package
239 (name "kronosnet")
240 (version "1.33")
241 (source (origin
242 (method git-fetch)
243 (uri (git-reference
244 (url "https://github.com/kronosnet/kronosnet")
245 (commit (string-append "v" version))))
246 (file-name (git-file-name name version))
247 (sha256
248 (base32
249 "068q6v4hyr46iw12nb8mq59fxx92hcy6p5vcqprd0x99gfv1rkjd"))))
250 (build-system gnu-build-system)
251 (arguments
252 ;; XXX: Multiple tests failed. Tests
253 ;; require very complex environment and for some of them root privileges to
254 ;; set network configuration. It has it's own CI based on Jenkis
255 ;; https://ci.kronosnet.org/.
256 (list #:tests? #f
257 #:configure-flags #~'("--disable-static")
258 #:phases #~(modify-phases %standard-phases
259 (add-before 'bootstrap 'fix-version-gen
260 (lambda _
261 (call-with-output-file ".tarball-version"
262 (lambda (port)
263 (display #$version port))))))))
264 (native-inputs (list autoconf
265 automake
266 doxygen
267 libtool
268 net-tools
269 pkg-config))
270 (inputs (list lksctp-tools
271 libnl
272 libqb
273 libxml2
274 lz4
275 lzo
276 nss
277 nspr
278 openssl
279 xz
280 zlib
281 `(,zstd "lib")))
282 (home-page "https://kronosnet.org/")
283 (synopsis "Network abstraction layer designed for High Availability")
284 (description
285 "Kronosnet, often referred to as @code{knet}, is a network
286 abstraction layer designed for High Availability use cases, where redundancy,
287 security, fault tolerance and fast fail-over are the core requirements of
288 your application.
289
290 Kronosnet is the new underlying network protocol for Linux HA components
291 (Corosync), that features ability to use multiple links between nodes,
292 active/active and active/passive link failover policies, automatic link
293 recovery, FIPS compliant encryption (nss and/or openssl), automatic PMTUd and
294 in general better performances compared to the old network protocol.")
295 (license (list license:gpl2+ license:lgpl2.1+))))
296
297(define-public nats-server
298 (package
299 (name "nats-server")
300 (version "2.14.1")
301 (source
302 (origin
303 (method git-fetch)
304 (uri (git-reference
305 (url "https://github.com/nats-io/nats-server")
306 (commit (string-append "v" version))))
307 (file-name (git-file-name name version))
308 (sha256
309 (base32 "1bnp17ddvpx0n8r7p4spfnhwhwwzff3f9w2h54pss8qvrsv0xy2a"))))
310 (build-system go-build-system)
311 (arguments
312 (list
313 #:install-source? #f
314 #:import-path "github.com/nats-io/nats-server"
315 ;; The test logic is taken from project's GitHub Actions workflow file
316 ;; <.github/workflows/tests.yaml>.
317 #:test-flags
318 #~(list "-count=1" "-vet=off" "-failfast"
319 "-skip" (string-join
320 (list "TestHTTPHost"
321 "TestSysLogger"
322 "TestLogMaxArchives")
323 "|"))
324 #:test-subdirs
325 #~(list "conf/..." "internal/..." "logger/..." "test/...")))
326 (inputs
327 (list go-github-com-antithesishq-antithesis-sdk-go
328 go-github-com-google-go-tpm
329 go-github-com-klauspost-compress
330 go-github-com-minio-highwayhash
331 go-github-com-nats-io-jwt-v2
332 go-github-com-nats-io-nats-go
333 go-github-com-nats-io-nkeys
334 go-github-com-nats-io-nuid
335 go-golang-org-x-crypto
336 go-golang-org-x-sys
337 go-golang-org-x-time))
338 (home-page "https://github.com/nats-io/nats-server")
339 (synopsis "High performance message broker")
340 (description
341 "NATS is a simple, secure and performant communications system for digital
342systems, services and devices. NATS is part of the Cloud Native Computing
343Foundation (CNCF). NATS has over 40 client language implementations, and its
344server can run on-premise, in the cloud, at the edge, and even on a Raspberry
345Pi. NATS can secure and simplify design and operation of modern distributed
346systems.")
347 (license license:asl2.0)))
348
349(define-public nsq
350 (package
351 (name "nsq")
352 (version "1.3.0")
353 (source
354 (origin
355 (method git-fetch)
356 (uri (git-reference
357 (url "https://github.com/nsqio/nsq")
358 (commit (string-append "v" version))))
359 (file-name (git-file-name name version))
360 (sha256
361 (base32 "1227ricbng8r5svnpr6hkmwjafa74jdp3ivijrk55qhw43rjk05a"))))
362 (build-system go-build-system)
363 (arguments
364 (list
365 #:import-path "github.com/nsqio/nsq"
366 #:install-source? #f
367 #:phases
368 #~(modify-phases %standard-phases
369 (replace 'build
370 (lambda* (#:key import-path #:allow-other-keys)
371 (with-directory-excursion (string-append "src/" import-path)
372 (invoke "make"))))
373 (add-before 'check 'pre-check
374 (lambda _
375 (setenv "HOME" "/tmp")))
376 (replace 'install
377 (lambda* (#:key import-path #:allow-other-keys)
378 (with-directory-excursion (string-append "src/" import-path)
379 (invoke "make" (string-append "PREFIX=" #$output)
380 "install")))))))
381 (native-inputs
382 (list go-github-com-bitly-go-hostpool
383 go-github-com-bitly-timer-metrics
384 go-github-com-blang-semver
385 go-github-com-bmizerany-perks-quantile
386 go-github-com-burntsushi-toml
387 go-github-com-davecgh-go-spew
388 go-github-com-golang-snappy
389 go-github-com-julienschmidt-httprouter
390 go-github-com-mreiferson-go-options
391 go-github-com-mreiferson-go-svc
392 go-github-com-nsqio-go-diskqueue
393 go-github-com-nsqio-go-nsq
394 python-wrapper))
395 (home-page "https://nsq.io")
396 (synopsis "Realtime distributed messaging platform")
397 (description
398 "NSQ is a realtime distributed messaging platform designed to operate at
399scale, handling billions of messages per day.
400
401Key features:
402@itemize
403@item support distributed topologies without @acronym{SPOF, Single Point of
404Failure}
405@item scale horizontally (no brokers, seamlessly add more nodes to the
406cluster)
407@item low-latency push based message delivery (performance)
408@item combine load-balanced and multicast style message routing
409@item excel at both streaming (high-throughput) and job oriented
410(low-throughput) workloads
411@item primarily in-memory (beyond a high-water mark messages are transparently
412kept on disk)
413@item runtime discovery service for consumers to find producers (nsqlookupd)
414@item transport layer security (TLS)
415@item data format agnostic
416@item few dependencies (easy to deploy) and a sane, bounded, default
417configuration
418@item simple TCP protocol supporting client libraries in any language
419@item HTTP interface for stats, admin actions, and producers (no client
420library needed to publish)
421@item integrate with @acronym{StatsD, Stats aggregation Daemon} for realtime
422instrumentation
423@item robust cluster administration interface (nsqadmin)
424@end itemize")
425 (license license:expat)))
426
427(define-public corosync
428 (package
429 (name "corosync")
430 (version "3.1.10")
431 (source (origin
432 (method git-fetch)
433 (uri (git-reference
434 (url "https://github.com/corosync/corosync")
435 (commit (string-append "v" version))))
436 (file-name (git-file-name name version))
437 (sha256
438 (base32
439 "12i9a3fgr0dwkb36iwqz8chxm1bc4pkkqcpl9bd7sng8f84g1hjm"))))
440 (build-system gnu-build-system)
441 (arguments
442 (list #:configure-flags #~'("--disable-static")
443 #:phases #~(modify-phases %standard-phases
444 (add-before 'bootstrap 'fix-version-gen
445 (lambda _
446 (call-with-output-file ".tarball-version"
447 (lambda (port)
448 (display #$version port))))))))
449 (native-inputs (list autoconf automake libtool pkg-config))
450 (inputs (list kronosnet libqb))
451 (home-page "https://corosync.github.io/corosync/")
452 (synopsis
453 "Group communication system for implementing High Availability in applications")
454 (description
455 "The Corosync Cluster Engine is a Group Communication System with additional
456features for implementing high availability within applications. The project
457provides four C Application Programming Interface features:
458
459@itemize
460
461@item A closed process group communication model with extended virtual synchrony
462guarantees for creating replicated state machines.
463
464@item A simple availability manager that restarts the application process when
465it has failed.
466
467@item A configuration and statistics in-memory database that provide the ability
468to set, retrieve, and receive change notifications of information.
469
470@item A quorum system that notifies applications when quorum is achieved or
471lost.
472
473@end itemize")
474 (license (list license:bsd-0 license:gpl3+))))
475
476(define-public pacemaker
477 (package
478 (name "pacemaker")
479 (version "2.1.10") ;final for 2.*.* series
480 (source (origin
481 (method git-fetch)
482 (uri (git-reference
483 (url "https://github.com/ClusterLabs/pacemaker")
484 (commit (string-append "Pacemaker-" version))))
485 (file-name (git-file-name name version))
486 (sha256
487 (base32
488 "0b9d2i22ghyjarwi1c596q5mf7gj1k04k784hnmrd2d4x9hgv9ax"))))
489 (build-system gnu-build-system)
490 (arguments
491 (list #:configure-flags #~(list "--with-corosync"
492 "--disable-static"
493 "--localstatedir=/var"
494 (string-append "--with-initdir="
495 #$output "/etc/init.d")
496 (string-append "--with-ocfdir="
497 #$output "/lib"))
498 #:phases
499 #~(modify-phases %standard-phases
500 (add-before 'configure 'pre-configure
501 (lambda _
502 ;; Do not attempt to install /var.
503 (substitute* '("Makefile.am"
504 "daemons/schedulerd/Makefile.am")
505 (("install-exec-local:")
506 "install-exec-local-disabled:")))))))
507 (native-inputs (list autoconf
508 automake
509 cmocka
510 gettext-minimal
511 libtool
512 pkg-config
513 rsync
514 util-linux
515 valgrind/pinned))
516 (inputs (list dbus
517 corosync
518 glib
519 gnutls
520 libqb
521 libxml2
522 libxslt
523 python
524 `(,util-linux "lib")))
525 (home-page "https://www.clusterlabs.org/pacemaker/")
526 (synopsis "Scalable High-Availability cluster resource manager")
527 (description
528 "Pacemaker is a high-availability cluster resource manager.
529
530It achieves maximum availability for your cluster services (a.k.a. resources) by
531detecting and recovering from node- and resource-level failures by making use of
532the messaging and membership capabilities provided by Corosync.
533
534It can do this for clusters of practically any size and comes with a powerful
535dependency model that allows the administrator to accurately express the
536relationships (both ordering and location) between the cluster resources.
537
538Virtually anything that can be scripted can be managed as part of a Pacemaker cluster.")
539 (license (list license:cc-by4.0 license:gpl2+ license:lgpl2.1+))))
540
541(define-public rabbitmq
542 (package
543 (name "rabbitmq")
544 (version "4.3.3")
545 (source
546 (origin
547 (method url-fetch)
548 (uri (string-append
549 "https://github.com/rabbitmq/rabbitmq-server/releases/download/v"
550 version "/rabbitmq-server-" version ".tar.xz"))
551 (file-name (string-append name "-" version ".tar.xz"))
552 (sha256
553 (base32 "05xdsgnd2pzcw4w7jkcv05yx4hpqn23v7rlcv3xhjcc1hb31ha79"))
554 (patches (search-patches "rabbitmq-defaults.patch"))))
555 (build-system gnu-build-system)
556 (arguments
557 (list
558 ;; Using parallel build leads to random build crashes.
559 #:parallel-build? #f
560 ;; The release page advises to use .tar.xz archive, but this file does not
561 ;; contain files required to run RabbitMQ tests (i.e.
562 ;; deps/rabbitmq_ct_helpers is missing). If we change to the .tar.gz
563 ;; archive, then we can run the tests, but that can take even few hours if
564 ;; a machine is slow. We might need to pick a subset of the tests. See
565 ;; RabbitMQ Arch Linux package for a candidate of a subset of tests.
566 #:tests? #f
567 #:make-flags
568 #~(list (string-append "RMQ_ROOTDIR="
569 #$output)
570 (string-append "RABBITMQ_VERSION="
571 #$version))
572 #:phases
573 #~(let ((rabbitmq-programs (list "rabbitmqctl"
574 "rabbitmq-diagnostics"
575 "rabbitmq-plugins"
576 "rabbitmq-queues"
577 "rabbitmq-server"
578 "rabbitmq-streams"
579 "rabbitmq-upgrade")))
580 (modify-phases %standard-phases
581 ;; erlang.mk contains the entries
582 ;;
583 ;; ELIXIR_BIN ?= $(shell readlink -f `which elixir`)
584 ;; ELIXIR_LIBS ?= $(abspath $(dir $(ELIXIR_BIN))/../lib)
585 ;;
586 ;; but fails to find elixir.app when building plugins.
587 ;;
588 ;; Despite the failures, the build is reported successful while some
589 ;; plugins are not built. For example, running rabbitmqctl
590 ;; command-line utility gives error
591 ;;
592 ;; undefined function Elixir.RabbitMQCtl':main/1
593 ;;
594 ;; After changing `dir` to `dirname`, all plugins build successfully
595 ;; and it is possible to use the command-line utilities.
596 (add-after 'unpack 'extract-rabbitmq-sources
597 (lambda _
598 (substitute* "erlang.mk"
599 (("dir \\$\\(ELIXIR_BIN\\)")
600 "shell dirname \\$\\(ELIXIR_BIN\\)"))))
601 (add-after 'install 'wrap-rabbitmq
602 (lambda* (#:key outputs inputs #:allow-other-keys)
603 (let ((sbindir (string-append #$output "/lib/rabbitmq_server-"
604 #$version "/sbin")))
605 ;; Starting RabbitMQ server requires: getconf, df, erl.
606 (wrap-program (string-append sbindir "/rabbitmq-server")
607 `("PATH" ":" prefix
608 (,(dirname (search-input-file inputs "bin/getconf"))
609 ,(dirname (search-input-file inputs "bin/df"))
610 ,(dirname (search-input-file inputs "bin/erl")))))
611 ;; Each of the RabbitMQ programs requires Erlang cookie
612 ;; stored in RabbitMQ'S user home directory.
613 (for-each (lambda (prog)
614 (wrap-program (string-append sbindir "/" prog)
615 `("PATH" suffix
616 (,(string-append #$erlang "/bin")))
617 `("HOME" =
618 ("/var/lib/rabbitmq"))))
619 rabbitmq-programs))))
620 (delete 'configure)
621 (add-after 'install 'patch-scripts
622 (lambda* (#:key inputs outputs #:allow-other-keys)
623 (substitute* (string-append #$output "/lib/rabbitmq_server-"
624 #$version "/sbin/rabbitmq-env")
625 (("basename")
626 (which "basename"))
627 (("dirname")
628 (which "dirname"))
629 (("readlink")
630 (which "readlink")))))
631 (add-after 'install 'install-bin
632 (lambda* (#:key inputs outputs #:allow-other-keys)
633 (let ((target (string-append #$output "/sbin"))
634 (sbindir (string-append #$output "/lib/rabbitmq_server-"
635 #$version "/sbin")))
636 (mkdir-p target)
637 (for-each (lambda (prog)
638 (symlink (string-append sbindir "/" prog)
639 (string-append target "/" prog)))
640 rabbitmq-programs))))
641 (add-after 'install 'install-man
642 (lambda _
643 (invoke "make" "install-man"
644 (string-append "PREFIX=" #$output))))))))
645 (inputs (list bash-minimal))
646 (native-inputs (list erlang elixir python-wrapper which p7zip))
647 (synopsis
648 "Messaging and streaming broker supporting multiple open protocols")
649 (description
650 "RabbitMQ is a messaging and streaming broker that supports multiple
651messaging protocols, including AMQP 1.0 and MQTT 5.0. It offers features
652such as message routing, filtering, streaming, federation, and clustering.
653It is designed for reliability and flexibility.")
654 (home-page "https://www.rabbitmq.com/")
655 (license license:asl2.0)))