package lwt

  1. Overview
  2. Docs
Promises and event-driven I/O

Install

Dune Dependency

github.com Readme Changelog MIT License Edit opam file Versions (45)

Authors

  1. J
    Jérôme Vouillon
  2. J
    Jérémie Dimino

Maintainers

  1. R
    Raphaël Proust <code@bnwr.net>
  2. Anton Bachin

Sources

5.7.0.tar.gz
md5=737039d29d45b2d2b35db6931c8d75c6
sha512=42e629920783428673b99c9d7a639237c9e6b35079b5d907bc67e7ea506acf9edadc48cec580bdcfd2410ed9412bf5e6bcc8b09de2fa7d35ce1490973d05ddd1

Description

A promise is a value that may become determined in the future.

Lwt provides typed, composable promises. Promises that are resolved by I/O are resolved by Lwt in parallel.

Meanwhile, OCaml code, including code creating and waiting on promises, runs in a single thread by default. This reduces the need for locks or other synchronization primitives. Code can be run in parallel on an opt-in basis.

Published: 17 Aug 2023

README

Lwt

Lwt is a concurrent programming library for OCaml. It provides a single data type: the promise, which is a value that will become determined in the future. Creating a promise spawns a computation. When that computation is I/O, Lwt runs it in parallel with your OCaml code.

OCaml code, including creating and waiting on promises, is run in a single thread by default, so you don't have to worry about locking or preemption. You can detach code to be run in separate threads on an opt-in basis.

Here is a simplistic Lwt program which requests the Google front page, and fails if the request is not completed in five seconds:

open Lwt.Syntax

let () =
  let request =
    let* addresses = Lwt_unix.getaddrinfo "google.com" "80" [] in
    let google = Lwt_unix.((List.hd addresses).ai_addr) in

    Lwt_io.(with_connection google (fun (incoming, outgoing) ->
      let* () = write outgoing "GET / HTTP/1.1\r\n" in
      let* () = write outgoing "Connection: close\r\n\r\n" in
      let* response = read incoming in
      Lwt.return (Some response)))
  in

  let timeout =
    let* () = Lwt_unix.sleep 5. in
    Lwt.return None
  in

  match Lwt_main.run (Lwt.pick [request; timeout]) with
  | Some response -> print_string response
  | None -> prerr_endline "Request timed out"; exit 1

(* ocamlfind opt -package lwt.unix -linkpkg example.ml && ./a.out *)

In the program, functions such as Lwt_io.write create promises. The let* ... in construct is used to wait for a promise to become determined; the code after in is scheduled to run in a "callback." Lwt.pick races promises against each other, and behaves as the first one to complete. Lwt_main.run forces the whole promise-computation network to be executed. All the visible OCaml code is run in a single thread, but Lwt internally uses a combination of worker threads and non-blocking file descriptors to resolve in parallel the promises that do I/O.


Overview

Lwt compiles to native code on Linux, macOS, Windows, and other systems. It's also routinely compiled to JavaScript for the front end and Node by js_of_ocaml.

In Lwt,

  • The core library Lwt provides promises...

  • ...and a few pure-OCaml helpers, such as promise-friendly mutexes, condition variables, and mvars.

  • There is a big Unix binding, Lwt_unix that binds almost every Unix system call. A higher-level module Lwt_io provides nice I/O channels.

  • Lwt_process is for subprocess handling.

  • Lwt_preemptive spawns system threads.

  • The PPX syntax allows using all of the above without going crazy!

  • There are also some other helpers, such as Lwt_react for reactive programming. See the table of contents on the linked manual pages!


Installing

  1. Use your system package manager to install a development libev package. It is often called libev-dev or libev-devel.

  2. opam install conf-libev lwt


Documentation

We are currently working on improving the Lwt documentation (drastically; we are rewriting the manual). In the meantime:

  • The current manual can be found here.

  • Mirage has a nicely-written Lwt tutorial.

  • An example of a simple server written in Lwt.

  • Concurrent Programming with Lwt is a nice source of Lwt examples. They are translations of code from the excellent Real World OCaml, but are just as useful if you are not reading the book.

Note: much of the current manual refers to 'a Lwt.t as "lightweight threads" or just "threads." This will be fixed in the new manual. 'a Lwt.t is a promise, and has nothing to do with system or preemptive threads.


Contact

Open an issue, visit Discord chat, ask on discuss.ocaml.org, or on Stack Overflow.

Release announcements are made in /r/ocaml, and on discuss.ocaml.org. Watching the repo for "Releases only" is also an option.


Contributing

  • CONTRIBUTING.md contains tips for working on the code, such as how to check the code out, how review works, etc. There is also a high-level outline of the code base.

  • Ask us anything, whether it's about working on Lwt, or any question at all about it :)

  • The documentation always needs proofreading and fixes.

  • You are welcome to pick up any other issue, review a PR, add your opinion, etc.

  • Any feedback is welcome, including how to make contributing easier!


Libraries to use with Lwt

Dependencies (5)

  1. ocplib-endian
  2. ocaml >= "4.08"
  3. dune-configurator
  4. dune >= "1.8.0"
  5. cppo build & >= "1.1.0"

Dev Dependencies (1)

  1. ocamlfind dev & >= "1.7.3-1"

  1. 0install >= "2.15.1"
  2. aches-lwt
  3. albatross
  4. alcotest-lwt
  5. alcotest-mirage
  6. ambient-context-lwt
  7. amqp-client >= "0.9.0" & < "1.0.2" | >= "1.1.0"
  8. amqp-client-lwt >= "2.0.1"
  9. angstrom-lwt-unix >= "0.11.0"
  10. anthill
  11. anycache-lwt
  12. arakoon < "1.8.6" | >= "1.8.8"
  13. archi-lwt
  14. arp >= "2.3.1"
  15. arp-mirage >= "2.2.1"
  16. awa-lwt
  17. awa-mirage
  18. aws-lwt
  19. aws-s3-lwt < "4.4.0" | >= "4.8.1"
  20. awsm-lwt
  21. azure-cosmos-db
  22. baardskeerder
  23. balancer
  24. bap < "1.0.0"
  25. bap-server < "0.2.0"
  26. bastet_lwt
  27. bimage-lwt
  28. biocaml = "0.4.0"
  29. bistro >= "0.4.0"
  30. brozip
  31. builder
  32. builder-web
  33. bun >= "0.3.3"
  34. c3
  35. calculon
  36. caldav
  37. camltc = "0.9.5" | >= "0.9.7.0"
  38. canary
  39. capnp-rpc-lwt
  40. capnp-rpc-unix >= "0.9.0"
  41. caqti-lwt >= "0.11.0"
  42. caqti-mirage
  43. carton
  44. carton-git
  45. carton-lwt
  46. cf-lwt
  47. chamelon
  48. chamelon-unix
  49. chamo >= "3.0"
  50. channel
  51. charrua-client >= "1.3.0"
  52. charrua-client-lwt
  53. charrua-client-mirage
  54. charrua-core < "0.3"
  55. charrua-unix >= "0.3" & != "0.10"
  56. clz
  57. cmdtui-lambda-term
  58. coap
  59. coap-server-lwt
  60. coclobas
  61. cohttp-curl-lwt
  62. cohttp-lwt
  63. cohttp-lwt-jsoo
  64. cohttp-lwt-unix >= "1.1.1"
  65. cohttp-lwt-unix-nossl
  66. cohttp-lwt-unix-ssl
  67. cohttp-mirage
  68. cohttp-server-lwt-unix
  69. comby
  70. comby-semantic
  71. conan-lwt
  72. conduit-lwt
  73. conduit-lwt-unix
  74. cowabloga >= "0.2.2"
  75. crunch >= "2.0.0"
  76. cstruct-lwt
  77. csv-lwt
  78. csvprovider
  79. ctypes >= "0.15.0" & < "0.21.1"
  80. ctypes-foreign >= "0.21.1"
  81. current
  82. current-albatross-deployer
  83. current_docker
  84. current_examples
  85. current_git
  86. current_github
  87. current_gitlab
  88. current_ocluster
  89. current_rpc >= "0.4"
  90. current_slack
  91. current_web
  92. DkSDKFFIOCaml_Std
  93. dap
  94. data-encoding < "0.1.1"
  95. datakit
  96. datakit-bridge-github
  97. datakit-bridge-local-git
  98. datakit-ci
  99. datakit-client = "0.11.0"
  100. datakit-github
  101. devkit >= "1.2"
  102. dht < "0.2.0"
  103. distributed-lwt
  104. dkim-bin >= "0.6.0"
  105. dkim-mirage
  106. dlm
  107. dns >= "0.19.1" & < "0.20.1"
  108. dns-certify
  109. dns-cli >= "4.6.3"
  110. dns-client < "7.0.0"
  111. dns-client-lwt
  112. dns-client-mirage
  113. dns-forward >= "0.9.0"
  114. dns-forward-lwt-unix
  115. dns-lwt
  116. dns-mirage
  117. dns-resolver
  118. dns-server
  119. dns-stub
  120. dnssd
  121. docker_hub
  122. docteur >= "0.0.2"
  123. docteur-solo5
  124. docteur-unix >= "0.0.5"
  125. doi2bib
  126. dream
  127. dream-httpaf
  128. dream-pure
  129. dream-serve
  130. dropbox
  131. dune-rpc-lwt >= "3.7.0" & != "3.10.0"
  132. dune_watch
  133. earlybird
  134. elasticsearch-cli >= "0.4"
  135. equinoxe
  136. eris-lwt
  137. ethernet
  138. ez_api >= "1.2.0"
  139. ezcurl-lwt
  140. ezirmin
  141. ezjs_min < "0.2"
  142. ezjsonm >= "0.4.2" & < "0.5.0"
  143. ezjsonm-lwt
  144. ezresto
  145. ezresto-directory >= "0.5"
  146. faraday-lwt
  147. faraday-lwt-unix >= "0.6.0"
  148. fat-filesystem >= "0.12.0"
  149. fiber-lwt
  150. flowtype >= "0.72.0"
  151. frenetic < "2.0.0"
  152. fsevents-lwt
  153. fswatch_lwt
  154. fuseau-lwt
  155. gamepad
  156. gdb
  157. gdbprofiler >= "0.3"
  158. git != "1.4.3" & != "1.7.2"
  159. git-cohttp
  160. git-cohttp-mirage
  161. git-cohttp-unix
  162. git-mirage >= "3.0.0"
  163. git-paf
  164. git-unix = "1.11.1" | >= "3.0.0"
  165. github
  166. github-hooks < "0.2.0" | >= "0.4.0"
  167. github-unix >= "4.4.0"
  168. gitlab-unix
  169. gitlab_pipeline_notifier
  170. gluten-lwt
  171. gluten-lwt-unix < "0.4.0"
  172. gluten-mirage < "0.4.0"
  173. graphql-lwt
  174. gremlin
  175. grpc-lwt
  176. guardian
  177. gufo
  178. h1
  179. h1-lwt-unix
  180. h2-lwt
  181. h2-lwt-unix < "0.10.0"
  182. h2-mirage
  183. happy-eyeballs-lwt
  184. happy-eyeballs-mirage
  185. hardcaml < "1.1.0"
  186. hardcaml-examples >= "0.3.0"
  187. hardcaml-framework
  188. hidapi-lwt
  189. hiredis != "0.4"
  190. hl_yaml
  191. hockmd
  192. horned_worm < "0.3.1"
  193. http-lwt-client
  194. http-mirage-client
  195. http-multipart-formdata >= "2.0.0" & < "3.0.0"
  196. http2https
  197. httpaf-lwt-unix
  198. httpun-lwt
  199. httpun-mirage
  200. httpun-ws-lwt
  201. hvsock >= "1.0.2"
  202. i3ipc >= "0.1.4"
  203. imaplet-lwt
  204. influxdb-lwt
  205. inotify >= "2.4"
  206. inquire < "0.3.0"
  207. interface-prime-lwt
  208. iocaml < "0.4.6"
  209. iocaml-kernel >= "0.4.3" & < "0.4.6"
  210. iocamljs-kernel
  211. ip2location
  212. ip2locationio
  213. ip2whois
  214. ipv6-multicast-lwt
  215. irc-client-lwt
  216. irc-client-lwt-ssl
  217. irc-client-tls
  218. irmin < "0.9.6" | = "0.9.10" | >= "0.11.0"
  219. irmin-bench
  220. irmin-chunk
  221. irmin-cli
  222. irmin-client
  223. irmin-containers
  224. irmin-fs >= "2.3.0"
  225. irmin-git >= "2.3.0"
  226. irmin-graphql >= "2.3.0"
  227. irmin-http >= "2.3.0"
  228. irmin-indexeddb
  229. irmin-layers
  230. irmin-mem >= "2.3.0"
  231. irmin-mirage-git >= "2.3.0"
  232. irmin-mirage-graphql >= "2.3.0"
  233. irmin-pack
  234. irmin-server
  235. irmin-test >= "2.3.0"
  236. irmin-unix >= "2.3.0"
  237. irmin-watcher >= "0.3.0"
  238. jerboa
  239. jitsu
  240. joolog
  241. jose < "0.9.0"
  242. js_of_ocaml < "2.5"
  243. js_of_ocaml-lwt >= "3.5.0"
  244. jsoo_broadcastchannel
  245. jsoo_router
  246. jsoo_storage
  247. jupyter >= "2.3.0"
  248. jupyter-kernel >= "0.4"
  249. kafka >= "0.3" & < "0.5"
  250. kafka_lwt
  251. kappa-agents >= "4.1.3"
  252. kappa-binaries >= "4.1.3"
  253. kappa-library
  254. ke >= "0.5"
  255. ketrew >= "3.2.0"
  256. kinetic-client < "0.0.3" | >= "0.0.9"
  257. kubecaml
  258. lablqml < "0.6"
  259. lambda-runtime
  260. lambda-term >= "1.13"
  261. lambda_streams_lwt
  262. launchd
  263. ldp
  264. learn-ocaml >= "0.13.0"
  265. learn-ocaml-client >= "0.13.0"
  266. ledgerwallet >= "0.4.0"
  267. letsencrypt
  268. letsencrypt-app
  269. letsencrypt-dns
  270. letters
  271. libres3
  272. links != "0.9"
  273. linol-lwt
  274. llama
  275. lru_cache < "v0.16.0"
  276. lwt-binio < "0.2.0"
  277. lwt-canceler
  278. lwt-dllist
  279. lwt-exit
  280. lwt-parallel >= "1.0.0"
  281. lwt-pipe
  282. lwt-pipeline
  283. lwt-watcher
  284. lwt-zmq < "1.0.0"
  285. lwt_camlp4
  286. lwt_domain
  287. lwt_eio
  288. lwt_glib >= "1.0.1"
  289. lwt_log >= "1.1.0"
  290. lwt_ppx
  291. lwt_ppx_let
  292. lwt_react >= "1.0.1"
  293. lwt_ssl >= "1.0.1"
  294. mariadb < "0.5.1"
  295. markup = "0.7.6"
  296. markup-lwt
  297. mdx
  298. mechaml
  299. mehari-lwt-unix
  300. mehari-mirage
  301. memtrace-mirage
  302. metrics-influx
  303. metrics-lwt
  304. metrics-mirage
  305. metrics-unix
  306. mimic
  307. mindstorm-lwt
  308. mirage >= "0.4.1" & != "0.6.1" & < "0.8.0" | >= "0.10.0" & < "2.7.0"
  309. mirage-block < "1.0.0" | >= "2.0.0"
  310. mirage-block-ccm
  311. mirage-block-combinators
  312. mirage-block-lwt
  313. mirage-block-partition
  314. mirage-block-ramdisk
  315. mirage-block-solo5
  316. mirage-block-unix < "2.3.0" | = "2.8.2" | >= "2.13.0"
  317. mirage-block-xen
  318. mirage-bootvar-solo5 >= "0.2.0"
  319. mirage-bootvar-unix
  320. mirage-bootvar-xen >= "0.4.0"
  321. mirage-channel >= "4.0.0"
  322. mirage-channel-lwt
  323. mirage-clock-freestanding < "3.0.0"
  324. mirage-clock-lwt
  325. mirage-clock-unix >= "1.3.0" & < "3.0.0"
  326. mirage-console >= "3.0.0"
  327. mirage-console-lwt
  328. mirage-console-solo5 >= "0.2.0"
  329. mirage-console-unix >= "2.2.1"
  330. mirage-console-xen >= "5.0.0"
  331. mirage-console-xen-backend
  332. mirage-console-xen-cli
  333. mirage-crypto-entropy
  334. mirage-crypto-rng >= "0.7.0" & < "0.11.0"
  335. mirage-crypto-rng-lwt
  336. mirage-crypto-rng-mirage >= "0.8.8"
  337. mirage-device >= "2.0.0"
  338. mirage-dns < "3.0.0"
  339. mirage-entropy
  340. mirage-flow >= "1.0.3" & < "1.2.0" | >= "2.0.0"
  341. mirage-flow-combinators
  342. mirage-flow-lwt < "1.3.0" | >= "1.5.0"
  343. mirage-flow-rawlink
  344. mirage-flow-unix >= "1.3.0"
  345. mirage-fs >= "3.0.0"
  346. mirage-fs-lwt
  347. mirage-fs-unix < "1.1.1" | >= "1.3.0"
  348. mirage-http
  349. mirage-http-unix
  350. mirage-http-xen
  351. mirage-kv >= "3.0.0"
  352. mirage-kv-lwt
  353. mirage-kv-unix
  354. mirage-logs != "0.3.0"
  355. mirage-nat < "3.0.0"
  356. mirage-net >= "3.0.1"
  357. mirage-net-fd
  358. mirage-net-lwt
  359. mirage-net-macosx
  360. mirage-net-solo5
  361. mirage-net-unix >= "2.2.0"
  362. mirage-net-xen
  363. mirage-os-shim >= "3.0.0"
  364. mirage-profile
  365. mirage-protocols >= "4.0.0" & < "8.0.0"
  366. mirage-protocols-lwt
  367. mirage-qubes < "0.2" | >= "0.4"
  368. mirage-qubes-ipv4
  369. mirage-random-stdlib >= "0.1.0"
  370. mirage-runtime >= "3.7.0"
  371. mirage-solo5
  372. mirage-stack >= "2.0.0" & < "4.0.0"
  373. mirage-stack-lwt
  374. mirage-time >= "2.0.0"
  375. mirage-time-lwt
  376. mirage-time-unix
  377. mirage-types-lwt < "3.7.1"
  378. mirage-unix >= "3.0.0"
  379. mirage-vnetif
  380. mirage-vnetif-stack
  381. mirage-www >= "1.1.0"
  382. mirage-xen
  383. mirror
  384. monorobot
  385. moonpool-lwt
  386. mqtt >= "0.0.2"
  387. mrmime >= "0.5.0"
  388. multipart-form-data >= "0.2.0"
  389. multipart_form >= "0.2.0" & < "0.4.0"
  390. multipart_form-cohttp-lwt < "0.6.0"
  391. multipart_form-lwt
  392. mwt
  393. naboris
  394. nanomsg
  395. nbd = "2.1.1" | >= "4.0.3"
  396. nbd-tool
  397. nbd-unix
  398. netchannel
  399. nocrypto >= "0.5.4"
  400. nottui-lwt
  401. nproc
  402. nsq >= "0.4.0"
  403. obrowser
  404. obuilder
  405. obus >= "1.2.1"
  406. ocaml-variants >= "4.00.1+mirage-unix" & < "4.00.1+open-types"
  407. ocluster
  408. ocluster-api
  409. ocluster-worker
  410. ocplib-concur
  411. ocplib-resto
  412. ocsigenserver >= "2.10"
  413. ocsipersist
  414. ocsipersist-dbm
  415. ocsipersist-lib
  416. ocsipersist-pgsql
  417. ocsipersist-sqlite
  418. octez-distributed-lwt-internal
  419. octez-internal-libs
  420. octez-l2-libs
  421. octez-libs
  422. octez-proto-libs
  423. octez-protocol-compiler
  424. octez-proxy-server
  425. octez-rpc-process
  426. octez-shell-libs
  427. octez-smart-rollup-wasm-benchmark-lib
  428. odoc >= "2.0.0" & < "2.1.0"
  429. oframl
  430. ojquery
  431. ojs-base
  432. ojs_base
  433. omigrate
  434. oneffs
  435. opam-sync-github-prs
  436. openflow < "0.2.0"
  437. opentelemetry-client-cohttp-lwt
  438. opentelemetry-cohttp-lwt >= "0.4"
  439. opentelemetry-lwt
  440. opium >= "0.11.0" & != "0.16.0"
  441. opium-graphql
  442. opium_kernel
  443. opomodoro
  444. order-i3-xfce
  445. ordma >= "0.0.3"
  446. oskel >= "0.3.0"
  447. ounit-lwt < "2.2.0"
  448. ounit2-lwt
  449. owork
  450. ox < "1.1.0"
  451. ozulip
  452. paf
  453. paf-cohttp
  454. passage
  455. pcap-format >= "0.3.3" & < "0.5.0"
  456. petrol
  457. pgx_lwt
  458. pgx_lwt_mirage
  459. pgx_lwt_unix < "2.0"
  460. piaf < "0.2.0"
  461. picos >= "0.3.0" & < "0.5.0"
  462. picos_lwt
  463. picos_meta
  464. plebeia >= "2.0.0"
  465. plist-xml-lwt
  466. plotkicadsch >= "0.4.0"
  467. ppx_defer >= "0.4.0"
  468. ppx_deriving_rpc
  469. ppx_json_types
  470. ppx_netblob
  471. ppx_rapper_lwt
  472. ppx_sqlexpr
  473. proc-smaps
  474. prof_spacetime
  475. prometheus
  476. prometheus-app
  477. promise_jsoo_lwt
  478. protocol-9p >= "0.10.0"
  479. protocol-9p-unix
  480. qcow >= "0.8.1"
  481. qcow-format < "0.3"
  482. qcow-tool
  483. qfs = "0.5" | >= "0.7"
  484. quests
  485. rawlink >= "1.0" & < "2.1"
  486. rawlink-lwt
  487. rdf_json_ld
  488. rdf_lwt
  489. redis-lwt
  490. reparse-lwt
  491. reparse-lwt-unix
  492. resource-pooling >= "0.3.2"
  493. resp
  494. resp-mirage >= "0.10.0"
  495. resp-unix >= "0.10.0"
  496. resto
  497. resto-cohttp-client >= "0.4"
  498. resto-cohttp-self-serving-client
  499. resto-cohttp-server >= "0.4" & < "0.6" | >= "0.9"
  500. resto-directory >= "0.4"
  501. riak
  502. ringo-lwt
  503. river
  504. rock
  505. rpc >= "1.5.1" & < "7.1.0"
  506. rpclib-js
  507. rpclib-lwt
  508. SZXX < "4.0.0"
  509. sanddb
  510. scgi
  511. sendmail-lwt
  512. serial
  513. server-reason-react
  514. session-cohttp-lwt
  515. session-cookie-lwt
  516. session-postgresql-lwt >= "0.4.1"
  517. sessions
  518. shared-block-ring < "2.3.0" | >= "3.0.0"
  519. shared-memory-ring >= "1.2.0" & < "2.0.0"
  520. shared-memory-ring-lwt
  521. sherlodoc
  522. sihl < "0.2.0"
  523. slack
  524. slacko
  525. slipshow
  526. socket-daemon < "0.3.0"
  527. speed
  528. spin < "0.8.0"
  529. spoke
  530. spotify-web-api < "0.2.1"
  531. sqlexpr = "0.7.1" | >= "0.9.0"
  532. statsd-client
  533. stk
  534. stog >= "0.16.0"
  535. syguslib-utils
  536. syndic >= "1.4" & < "1.6.0"
  537. tar-format >= "0.4.1"
  538. tar-mirage
  539. tar-unix
  540. tcpip >= "3.1.1" & < "3.4.1" | >= "4.1.0"
  541. teash
  542. telegraml
  543. terminus
  544. tezos-base >= "13.0"
  545. tezos-clic >= "13.0"
  546. tezos-crypto >= "13.0"
  547. tezos-crypto-dal
  548. tezos-error-monad >= "8.0" & < "9.0" | >= "13.0"
  549. tezos-lwt-result-stdlib >= "9.0"
  550. tezos-p2p >= "11.0" & < "13.0"
  551. tezos-protocol-compiler >= "13.0"
  552. tezos-protocol-environment >= "13.0"
  553. tezos-proxy >= "17.1"
  554. tezos-proxy-server
  555. tezos-stdlib
  556. tezos-stdlib-unix >= "8.0" & < "9.0" | >= "13.0"
  557. tezos-test-helpers >= "12.0"
  558. tezos-wasmer
  559. tezos-webassembly-interpreter-extra
  560. tezt
  561. tftp
  562. themoviedb
  563. tidy_email
  564. tls = "0.10.1" | >= "0.10.6" & < "0.16.0"
  565. tls-lwt
  566. tls-mirage
  567. transmission-rpc
  568. tube >= "4.3.0"
  569. tuntap >= "1.0.0" & < "1.7.0" | >= "2.0.0"
  570. twirp_cohttp_lwt_unix
  571. typerex-lldb
  572. u2f
  573. uring
  574. uspf
  575. uspf-lwt
  576. utop >= "1.4.0"
  577. uwt >= "0.3.0"
  578. vchan >= "0.9.7" & < "2.0.0" | >= "2.0.3"
  579. vchan-unix
  580. vchan-xen
  581. vercel
  582. vhd-format >= "0.7.0" & < "0.8.0"
  583. vhd-format-lwt >= "0.12.0"
  584. vhd-tool < "0.12.0"
  585. vmnet >= "1.3.2"
  586. vpnkit >= "0.2.0"
  587. vue-jsoo < "0.3"
  588. wayland < "2.0"
  589. webauthn
  590. websocket < "2.3"
  591. xe-unikernel-upload
  592. xen-api-client < "0.9.14"
  593. xen-block-driver
  594. xen-evtchn < "1.0.6" | >= "2.0.0"
  595. xen-evtchn-unix
  596. xen-gnt >= "2.2.3"
  597. xen-gnt-unix >= "4.0.2"
  598. xenctrl < "0.9.29" | >= "0.9.32"
  599. xenstore >= "1.3.0"
  600. xenstore_transport >= "1.0.0"
  601. xentropyd
  602. yocaml_git
  603. yocaml_unix
  604. yurt < "0.3"
  605. zarr-lwt
  606. zmq-lwt >= "5.2.1"

Conflicts

None

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