OCaml

[Changelog] Dune 3.​25.​0: The Dune team is pleased to announce the release of dune 3.​25.​0. Highlights of this release include: Breaking changes * Actions no longer see the shared install staging area (_build/install//{bin,lib,lib/stublibs}) on… dlvr.​it/TWJv8W

[Changelog] Dune 3.​25.​0: CHANGES: Fixed * Fix crashes when expanding module artifact pforms (%{cmi:...} etc.) with (include_subdirs qualified). Qualified modules can now be referenced by dotted logical paths such as %{cmi:Sub_a.​Foo}. (#14498,… dlvr.​it/TWJFGx

[Changelog] Utop 2.​18.​0: CHANGES: * Add OCaml 5.​6 support (#519 @kit-ty-kate @anmonteiro) * Allow running the tests with dune >= 3.​25 (#520 @anmonteiro) * Add ability to toggle off welcome message using new {set,get,}show_welcome functions (#514 @jg791) dlvr.​it/TWJF9g

[Changelog] OCaml-LSP 1.​26.​1: CHANGES: Features * Add custom ocamllsp/completePrefixAtPos request, which completes a given prefix at a given position and returns function argument labels separately from the completions. This will be used by Emacs… dlvr.​it/TWDgsp

[Changelog] OCaml OCaml 4.​14.​5: Bug fixes release with 6 security fixes, and 2 ordinary bug fixes: * Security fix OSEC-2026-18: Marshal.​from_{string,bytes} * Security fix OSEC-2026-21: Str.​string_partial_match * Security fix OSEC-2026-22: Unix.​map_file… dlvr.​it/TWDgqY

[Changelog] Dune-release 2.​3.​0: CHANGES: Added * Support .​gitattributes export-ignore attribute to exclude files from distribution archives. (#515, @jberdine, reviewed by @Leonidas-from-XIV) Changed * Require dune 3.​14 to build. (#532,… dlvr.​it/TWDgn2

[Changelog] OCaml-LSP 1.​28.​1: CHANGES: Features * Offer parenthesized application snippets for constructors with payloads, with independent argument slots, while retaining name-only completions. (#2212, @rgrinberg) * Make generated destruct branch… dlvr.​it/TWC50n

[Changelog] Merlin 5.​9.​1-505: CHANGES: Wed Nov 04 15:27:42 CET 2026 * merlin library * Fix a caching issue making inconsistant units stale (#2141) * ocaml index * Fix a regression due to the new "pointing indexes" mechanism (#2144) * Fix… dlvr.​it/TWC4sR

[Changelog] Odoc 3.​2.​2: CHANGES: Added * Support for OCaml 5.​6 (@jonludlam, #1472) Fixed * Avoid relying on ocamllex raising Failure for an unescaped '{', which OCaml 5.​6's ocamllex warns about (@Leonidas-from-XIV, #1494) * Remove… dlvr.​it/TW8pdG

[Changelog] OCaml-LSP 1.​28.​0: CHANGES: Features * Offer parenthesized application snippets for constructors with payloads, with independent argument slots, while retaining name-only completions. (#2212, @rgrinberg) * Make generated destruct branch… dlvr.​it/TW8pX6

[Changelog] Merlin 5.​9: CHANGES: Mon Oct 01 15:31:42 CEST 2026 * merlin library * destruct: allow to destruct let-bindings's patterns (#2117) * Fix detection of expression at cursor in case of type-constrained expression (#2120) * enclosing:… dlvr.​it/TW8pQY

[Changelog] Ppxlib 0.​39.​0: CHANGES: * Fix a bug in Ast_builder.​Default.​pexp_apply where it would duplicate attributes and mess up the locations. (#643. @Skepfyr) * Add support for OCaml 5.​6 primitive aliases (#642, @NathanReb) * Remove… dlvr.​it/TW8pJv

[Changelog] Mdx 2.​7.​0: CHANGES: Added * Add mdx_skip for skipping tests (#483, @talex5). Changed * Paths are normalized to drop the directory prefix ("./" on macOS and Linux) before pretty printing them (#482, @shonfeder). dlvr.​it/TW8pBN

[Changelog] Ocp-indent 1.​10.​0: CHANGES: * Bump OCaml lower bound to 4.​11 (#343, @NathanReb) * Add explicit support for effect syntax (#342, @NathanReb) * Remove support for legacy camlp4 extensions that was causing misidentation of code using some… dlvr.​it/TW8p4P

[Backstage OCaml] opam 2.​6.​0~rc1: This is the first candidate of opam 2.​6.​0. Binaries and full archive are signed by the opam dev team (fingerprint 92C5 26AE 50DF 3947 0EB2 911B ED4C F1CA 67CB AA92). To verify the authenticity of one of these files, run… dlvr.​it/TW8mwD

[Backstage OCaml] opam 2.​6.​0~beta2: This is the second beta release of opam 2.​6.​0. Binaries and full archive are signed by the opam dev team (fingerprint 92C5 26AE 50DF 3947 0EB2 911B ED4C F1CA 67CB AA92). To verify the authenticity of one of these files,… dlvr.​it/TW8mp9

[Backstage OCaml] opam 2.​6.​0~beta1: This is the first beta release of opam 2.​6.​0. Binaries and full archive are signed by the opam dev team (fingerprint 92C5 26AE 50DF 3947 0EB2 911B ED4C F1CA 67CB AA92). To verify the authenticity of one of these files,… dlvr.​it/TW8mfk

[Changelog] Release of OCaml 5.​5.​2: We have the pleasure of celebrating the anniversary of the first powered flight in Europe by announcing the release of OCaml 5.​5.​2. OCaml 5.​5.​2 fixes various minor security issues, two rare miscompilations, a… dlvr.​it/TW2grr

[Changelog] opam 2.​6.​1 release: Feedback on this post is welcome on Discuss! We are pleased to announce the release of opam 2.​6.​1 fixing a couple of regressions and minor annoyances. We advise everyone to upgrade. Please read on for installation and… dlvr.​it/TVq06x