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Building opam package Nx fails with linker error, likely due to bad include directory formatting

Status: Open.

#13603 In ocaml/dune;

· nilsbecker opened on Feb 10, 2026

Building a ocaml.x.y.z.pkg on Windows doesn't work

package management

windowsIssues that relate to Dune on Microsoft WindowsIssues that relate to Dune on Microsoft Windows

Status: Open.

#13597 In ocaml/dune;

· punchagan opened on Feb 9, 2026

crash on invalid dune-project

Status: Open.

Bug

#13567 In ocaml/dune;

· redianthus opened on Feb 6, 2026

@ocaml-index fails when multiple executables in a directory don't specify (modules)

Status: Open.

Bug

#13566 In ocaml/dune;

· samoht opened on Feb 6, 2026

3.21.1 release tracker

releasePR or issue for releasing a new dune versionPR or issue for releasing a new dune version

Status: Open.

#13557 In ocaml/dune;

· shonfeder opened on Feb 6, 2026

Dune should respect user-specified PPX order in <code>(preprocess (pps ...))</code> stanza

Status: Open.

#13551 In ocaml/dune;

· davesnx opened on Feb 5, 2026

Dune 3.21.0 unable to lock project depending on ocaml-system

package management

Status: Open.

Bug

#13545 In ocaml/dune;

· gridbugs opened on Feb 5, 2026

Coq/Rocq support still uses hard-coded <code>coq/user-contrib</code>

rocq

Status: Open.

#13532 In ocaml/dune;

· rlepigre-skylabs-ai opened on Feb 3, 2026

Formatting dune files on save while the build is running

good first issueGood for contributing for the first time to the Dune codebaseGood for contributing for the first time to the Dune codebase

rpc

Status: Open.

Bug

#13525 In ocaml/dune;

· mbarbin opened on Feb 2, 2026

Support user-define variables where possible

Status: Open.

Feature

#13501 In ocaml/dune;

· giltho opened on Jan 30, 2026

Dune 3.21.0 crashes and hangs with "Dependency cycle between ..."

Status: Open.

#13500 In ocaml/dune;

· nojb opened on Jan 30, 2026

pkg: provide a way to update the lock file without advancing the opam snapshot

package management

Status: Open.

Feature

#13494 In ocaml/dune;

· v-gb opened on Jan 29, 2026