From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: plum.tunbury.org; dkim=pass (1024-bit key; unprotected) header.d=inria.fr header.i=@inria.fr header.a=rsa-sha256 header.s=dc header.b=qkKOs3GS; dkim-atps=neutral Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=192.134.164.83; helo=mail2-relais-roc.national.inria.fr; envelope-from=caml-list-owner@inria.fr; receiver=tunbury.org Received: from mail2-relais-roc.national.inria.fr (mail2-relais-roc.national.inria.fr [192.134.164.83]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by plum.tunbury.org (Postfix) with ESMTPS id BBBB740085 for ; Tue, 26 Aug 2025 12:34:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=inria.fr; s=dc; h=from:to:date:message-id:mime-version:subject:reply-to: sender:list-id:list-help:list-subscribe:list-unsubscribe: list-post:list-owner:list-archive; bh=Obuj72arVFM1Laoqq0u1XDzkps/MQMK1mzqg0gBc1qs=; 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ip4:192.134.164.0/24 ip4:128.93.162.160 ip4:128.93.162.3 ip4:128.93.162.88 ip4:89.107.174.7 mx ~all" Received-SPF: None (mail2-relais-roc.national.inria.fr: no sender authenticity information available from domain of postmaster@sympa.inria.fr) identity=helo; client-ip=128.93.162.160; receiver=mail2-relais-roc.national.inria.fr; envelope-from="caml-list-owner@inria.fr"; x-sender="postmaster@sympa.inria.fr"; x-conformance=spf_only X-IronPort-AV: E=Sophos;i="6.18,214,1751234400"; d="scan'208,217";a="236152331" Received: from prod-listesu18.inria.fr (HELO sympa.inria.fr) ([128.93.162.160]) by mail2-relais-roc.national.inria.fr with ESMTP; 26 Aug 2025 14:34:11 +0200 Received: by sympa.inria.fr (Postfix, from userid 20132) id 5BC95E0CD7; Tue, 26 Aug 2025 14:34:10 +0200 (CEST) Received: from mail2-relais-roc.national.inria.fr (mail2-relais-roc.national.inria.fr [192.134.164.83]) by sympa.inria.fr (Postfix) with ESMTPS id 66A93E0172 for ; Tue, 26 Aug 2025 14:34:07 +0200 (CEST) X-CSE-ConnectionGUID: LNdSPwD9RqS4DzjaBOq/7w== X-CSE-MsgGUID: jzzfii/aR6KuFh8hty/2uw== X-IronPort-AV: E=Sophos;i="6.18,214,1751234400"; d="scan'208,217";a="236152302" Received: from mac-03220211.irisa.fr ([131.254.21.249]) by mail2-relais-roc.national.inria.fr with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Aug 2025 14:34:08 +0200 From: Alan Schmitt To: "lwn" , caml-list@inria.fr Date: Tue, 26 Aug 2025 14:34:07 +0200 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="=-=-=" Subject: [Caml-list] Attn: Development Editor, Latest OCaml Weekly News Reply-To: Alan Schmitt X-Loop: caml-list@inria.fr X-Sequence: 19370 Errors-To: caml-list-owner@inria.fr Precedence: list Precedence: bulk Sender: caml-list-request@inria.fr X-no-archive: yes List-Id: List-Help: List-Subscribe: List-Unsubscribe: List-Post: List-Owner: List-Archive: Archived-At: --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: base64 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OCaml Weekly News

Previous Week<= /a> Up Next Week

Hello

Here is the latest OCaml Weekly News, for the week of August 19 to 26, 2025.

Tacit 1.0.0 - Combinators!

Archive: https://discuss.ocaml.org/t/tacit-1-0-0-combinators/17142/1

arutonee announced

Partially as a beginner project (I am very much a beginner- if anyon= e else finds the package useful and feels like something should be changed = or knows more fun combinators, feel free to make a PR as I have no clue wha= t I=E2=80=99m doing), and partially just because I personally want a relati= vely complete combinator library, tacit is now on opam! Now yo= u can write let nth_root =3D C.c (C.phi1 Float.pow C.k (C.b1 (( /. ) = 1.) C.ki)) if you wanted to, for whatever reason :wink:

Xavier Van de Woestyne then added

Here is the package page: http= s://ocaml.org/p/tacit/latest

here is the repository: http= s://github.com/arutonee1/tacit

Slipshow!

Archive: http= s://discuss.ocaml.org/t/ann-slipshow/16337/11

Paul-Elliot announced

(I hope it's still OK to announce my releases here, despite their current f= requencies and the fact that it's not an OCaml li= brary.)

I am speechless to announce the new opam release of Slipshow!

Version 0.6.0: The King=E2=80=99s Slipshow

This release focuses on one specific feature: the speaker view.

https://github.com/user-attachments/assets/6f1384f0-715c-4= af7-80d6-7da9c0b9744b

(Disclaimer: AI generated text ^[The text in the left of the gif above was = mostly generated by an LLM, mimicking "The King's speech" declaration of wa= r, but turned to praise peace, which we need a lot in this world])

The speaker view includes a timer, speaker notes, and a presentation synced= with the main one. Note that a compiled presentation is still a standalone= html file that you can just double click on.

To open the speaker view, press s. To send some text to the sp= eaker notes, use the speaker-note action, as in the code below: 

# The King's Slipshow

{pause speaker-note}
Say it like this: "perhaaaaaaaaps"...

In this grave hour, perhaps the most fateful in our history, I send to ever=
y household of my peoples, both at home and overseas, this message, spoken =
with the same depth of feeling for each one of you as if I were able to cro=
ss your threshold and speak to you myself.

{pause speaker-note}
Make a little pause and show a tear, it'll make it more dramatic.

As always, the world finds itself standing on the edge of war.

{pause center=3Dtime speaker-note}
Emphasize roar but avoid making everyone uncomfortable.

{#time}
Time after time, we have sought peaceful ways to resolve our differences. Y=
et too often, dialogue has been drowned out by the roar of weapons.

{pause speaker-note}
Pretend you know what you are speaking about: as a King, you can do that.

We are told that violence is unavoidable, that to be safe we must fight. Bu=
t this is the old and dangerous lie that =E2=80=9Cmight is right.=E2=80=9D =
If we accept it, we accept the slow destruction of all that makes life wort=
h living.

{pause down=3Dend speaker-note}
DRAMATICALLY POINT FINGERS AT THE AUDIENCE!!!

For the sake of all we cherish, we must find another path. The real challen=
ge before us is not to fight harder, but to imagine peace when anger blinds=
 us, and to choose cooperation when conflict seems easier.

I call on all people, across every border, to remain calm, firm, and united=
 in the higher cause of preserving life. To resist the call of hatred. To r=
emember that in every city, in every nation, there are children who deserve=
 a future unscarred by war.

The road will be hard. There may be days when peace feels impossible. But w=
ar spreads beyond the battlefield =E2=80=94 it steals homes, divides famili=
es, and poisons the generations to come.

{#end}
If we remain steadfast in our refusal to give in to violence, then, with co=
urage and compassion, we will prevail =E2=80=94 not by destroying, but by p=
reserving.

Full changelog below:

  • Engine
    • Add a speaker view, opened with s. (#147)
    • Fix Z and X not working (#147)
    • On step change, move back to the position we left (#148)
  • Language
    • Add a speaker-note action. (#147)

Claudius is now available in opam! =F0=9F=8E=89

Archive: https://discuss.ocaml.org/t/claudius-is-now-available-in-op= am/17145/1

Shreya Pawaskar announced

We are happy to announce that Claudius is now available in opam!

Claudius is a functional style retro-graphics library for OCaml for buildin= g generative art, demos, and games.

Here=E2=80=99s our github: Claudius

And some cool examples to checkout and explore more: claudius-examples

New release of UnionFind

Archive: https://discuss.ocaml.org/t/ann-new-release-of-unionfind/17147/1=

Fran=C3=A7ois Pottier announced

Hello! It is my pleasure to announce a new release of my library unio= nFind. The main news is that a concurrent union-find algorithm is no= w available under the name UnionFind.Concurrent. To install it= , type opam update && opam install unionFind.20250818.= For more information, see the documentation.

Bogue, the OCaml GUI

Archive: https://discuss.ocaml.org/t/ann-bogue-the-ocaml-gui/9099/64

sanette announced

Hello

it=E2=80=99s my pleasure to announce a new version of Bogue, version 20250815 available on opam.

The main novelty is an internationalization mechanism. All text used= by Bogue (like =E2=80=98close=E2=80=99 in a close button) will be automati= cally translated into the user=E2=80=99s language. Currently 15 languages a= re supported but more can easily be added either via configuration files, o= n directly at run-time using the i18n API.

note: Internationalization has been tested only for a small number of appli= cations; don=E2=80=99t hesitate to report bugs.

Happy bogue-ing!

Dune 3.20

Archive: http= s://discuss.ocaml.org/t/ann-dune-3-20/17150/1

Etienne Marais announced

On the behalf of the Dune Team, I=E2=80=99m glad to announce the release of= dune 3.20.0 :partying_face:=20

This release contains some important bug fixes. It contains new features fo= r tests, such as the possibility to use an alias and the possibility to dec= lare a timeout for cram tests. This release also provides new= possibilities for the watch mode, like the ability to run an execut= able or promote files while the watch mode is running.

:warning: A significant change in this release is how the dune file formatt= er acts. It will now try to fill the line instead of using the vertical for= mat.

If you encounter a problem with this release, you can report it on the ocaml/dune repository.

Changelog

  • Fixed
    • Stop re-running cram tests after promotion when it=E2=80=99s not necess= ary (#11994, @rgrinberg)
    • fix: $ dune subst should not fail when adding the version = field in opam files (#11801, fixes #11045, @btjorge)
    • Kill all processes in the process group after the main process has terminated; in particular this avoids background processes in cram tests to stick around after the test finished (#11841, fixes #11820, @Alizter, @Leonidas-from-XIV)
  • Added
    • (tests) stanzas now generate aliases with the test name. T= o run (test (name a)) you can do dune build @runtest-a.= (#11558, grants part of #10239, @Alizter)
    • Inline test libraries now produce aliases runtest-name_of_lib allowing users to run specific inline tests as dune build @runtest-na= me_of_lib. (#11109, partially fixes #10239, @Alizter)
    • feature: $ dune subst use version from dune-project<= /code> when no version control repository has been detected (#11801, @btjorge)
    • Allow dune exec to run concurrently with another instance = of dune in watch mode (#11840, @gridbugs)
    • Introduce %{os}, %{os_version}, %{os_di= stribution}, and %{os_family} percent forms. These have the same values as their opam counterparts. (#11863, @rgrinberg)
    • Introduce option (implicit_transitive_deps false-if-hidden-includ= es-supported) that is equivalent to (implicit_transitive_deps false) when -H is supported by the compiler (OCaml >=3D 5.2) and equivalent to (implicit_transitive_deps true) otherwise. (#11866, fixes #112= 12, @nojb)
    • Add dune describe location for printing the path to the ex= ecutable that would be run (#11905, @gridbugs)
    • dune runtest can now understand absolute paths as well as = run tests in specific build contexts (#11936, @Alizter).
    • Added =E2=80=98empty=E2=80=99 alias which contains no targets. (#11556 = #11952 #11955 #4161, grants #4161, @Alizter and @rgrinberg)
    • Allow dune promote to properly run while a watch mode serv= er is running (#12010, @ElectreAAS)
    • Add --alias and --alias-rec flags as an alter= native to the @@ and @ syntax in the command line (#5775, fixes #5775, @rgrinberg)
    • Added a (timeout <float>) field to the (cram)<= /code> stanza to specify per-test time limits. Tests exceeding the timeout are terminated with an error. (#12041, @Alizter)
  • Changed
    • Format long lists in s-expressions to fill the line instead of formatting them in a vertical way (#10860, fixes #10860, @nojb)
    • Switch from MD5 to BLAKE3 for digesting targets and rules. BLAKE3 is bo= th more performant and difficult to break than MD5 (#11735, @rgrinberg, @Alizter)
    • Print a warning when dune build runs over RPC (#11833, @gr= idbugs)
    • Stop emitting empty module group wrapper .js file in melange.emit (#11986, fixes #11986, @anmonteiro)

Etienne Marais later announced

The Dune Team is happy to announce the release of Dune 3.20.1.

This release introduces some minor fixes and reverts the dune file formatte= r change. As mentioned above, the formatter change will be reintroduced in = a next release once it is able to detect the dune project version.

Changelog

  • Fixed
    • Fix runtest-js mistakenly depending on byte (= fixes #12243, #12242, @vouillon and @Alizter)
    • Fix the interpretation of paths in dune runtest when runni= ng from within a subdirectory. (#12251, fixes #12250, @Alizter)
  • Changed
    • Revert formatting change introduced in 3.20.0 making long lists in s-expressions fill the line instead of formatting them in a vertical way (#12245, reverts #10892, @nojb)

cudajit: Bindings to the cuda and nvrtc libraries

Archive: https://discuss.ocaml.org/t/ann-cudajit-= bindings-to-the-cuda-and-nvrtc-libraries/15010/4

Lukasz Stafiniak announced

cudajit 0.7.2 is now available in the opam repository. It=E2=80=99s a bug-f= ix release. Note that a salient missing feature of cudajit is CUDA graphs, = if you want them I=E2=80=99m eager to add them, let me know!

OCANNL 0.6.0 is also available in the opam repository. However, I only expe= ct OCANNL to become usable at version 0.8 due to how I decided to prioritiz= e things. The upshot is that the front-end should become pretty stable star= ting with version 0.7.

zbg v0.3.0: New release 2 years later

Archive: https://discuss.ocaml.org/t/ann-zbg-v0-3-0-new-relea= se-2-years-later/17165/1

Dmitrii Kovanikov announced

Hi everyone :waving_hand:=20

2 years ago, I created zbg =E2=80=93 Zero Bullshit Git. It was= my first project in OCaml to learn the language. But I still use the tool = daily. It's just a small wrapper around some git commands to m= ake my life easier.

I might be the only person using this tool, but it saves me time every day,= and it brings joy to programming, so, hey, that's enough reward for me.

Moreover, I received some high-quality contributions from other people who = enhanced the tool. Thank you a lot!!

I like that zbg is rather small, and I intend to keep it that = way. I believe it serves as a nice example of a small (yet still useful) pr= oject in OCaml.

Anyway, I just released a new version 2 years later. Have a look if you're = interested!

Previous discussion:

Announcing Raven: Scientific Computing for OCaml (Alpha Relea= se)

Archive: https://discuss.ocaml.org/t/an= nouncing-raven-scientific-computing-for-ocaml-alpha-release/16913/28

Thibaut Mattio announced

Help Shape Raven=E2=80=99s First Alpha - Call for Con= tributions!

I=E2=80=99m excited to announce that Raven=E2=80=99s first alpha is sche= duled in 3 weeks, just in time for FunOCaml! (Following our zeroth alph= a in July)

What=E2=80=99s New

We=E2=80=99ve added a plethora of new features:

  • New Talon package that provides an equivalent for Pandas/P= olars to work with dataframes
  • New Saga package providing tokenizers and NLP functionnali= ties (e.g. Ngram models)
  • Support for symbolic shapes and lazy views in Nx
  • Support for new and machine-learning-specific data types, including boo= lean, bfloat16, complex16, float8, etc.
  • Support for forward mode differenciation through Rune.jvp<= /li>
  • Support for automatic vectorization through Rune.vmap
  • Addition of a complete linear algebra suite in Nx

And, of course, since it is the theme of the FunOCaml workshop: addition= of transformers blocks in Kaun to train large language models.

All of these features are currently in-progress in Raven=E2=80=99s reposito= ry, ranging from ready-to-release (e.g. Talon) to prototyping (e.g. Kaun's = transformers), but we=E2=80=99re aiming for a release with all of the above= mid-september.

### Call for Contributions

If you were looking to contribute to Raven, now=E2=80=99s probably a really= good time! There=E2=80=99s going to be a lot of activity in the coming wee= ks, and the repository is in good shape for first-time-contributors, with a= lot of good first issues: we=E2=80=99ve just landed a complete linear a= lgebra suite that=E2=80=99s ~80% working, which makes for the perfect s= et of starter issues: failing tests that need fixing.

  • 15 failing tests on the native backend
  • 35 on the C backend

These range from implementing frontend operations using our new backend ops= , to investigating bugs in the newly added linear algebra functions. Pick a= test, fix it, open a PR!

Getting Started

git clone https://github.com/raven-ml/ra=
ven
dune pkg lock
dune build @nx/runtest

If you=E2=80=99re interested in contributing, don=E2=80=99t hesitate to rea= ch out as well, I=E2=80=99m happy to give pointers and show you around the codebase.

Hoping you=E2=80=99re as excited about the upcoming release as I am - Happy= Hacking!

Outreachy Demo Day August 2025

Archive: https://discuss.ocaml.org/t/outreachy-demo-day-august-2025/171= 67/1

Patrick Ferris announced

It is my pleasure to announce this Friday [date=3D2025-08-29 time=3D10:00:0= 0 timezone=3D"UTC"] we will host the Outreachy Demo presentation. We invite= all of the OCaml community and beyond to join us in celebrating the hard w= ork of the community=E2=80=99s two interns who have been working on:

  • Claudius: A f= antasy-console style graphics library for OCaml
  • Dune: Extending dune t= o discover system information

We=E2=80=99ll post the meeting link closer to the time. Hopefully see you t= here! :camel:

Old CWN

If you happen to miss a CWN, you can send me a message and I'll mail it to you, or go take a loo= k at the archive or the <= a href=3D"https://alan.petitepomme.net/cwn/cwn.rss">RSS feed of the archive= s.

If you also wish to receive it every week by mail, you may subscribe to the= caml-list.

--=-=-=--