OCaml Changelog


Read the latest releases and updates from the OCaml ecosystem.

Dune 3.1.0

On behalf of the dune team, I'm pleased to announce version 3.1.0. This release contains some small, but interesting features, and some important quality of life bug fixes. I encourage everyone to upgrade as soon as possible.

Happy Hacking.

See full changelog
  • Add sourcehut as an option for defining project sources in dune-project files. For example, (source (sourcehut user/repo)). (#5564, @rgrinberg)

  • Add dune coq top command for running a Coq toplevel (#5457, @rlepigre)

  • Fix dune exec dumping database in wrong directory (#5544, @bobot)

  • Always output absolute paths for locations in RPC reported diagnostics (#5539, @rgrinberg)

  • Add (deps <deps>) in ctype field (#5346, @bobot)

  • Add (include <file>) constructor to dependency specifications. This can be used to introduce dynamic dependencies (#5442, @anmonteiro)

  • Ensure that dune describe computes a transitively closed set of libraries (#5395, @esope)

  • Add direct dependencies to $ dune describe output (#5412, @esope)

  • Show auto-detected concurrency on Windows too (#5502, @MisterDA)

  • Fix operations that remove folders with absolute path. This happens when using esy (#5507, @EduardoRFS)

  • Dune will not fail if some directories are non-empty when uninstalling. (#5543, fixes #5542, @nojb)

  • coqdep now depends only on the filesystem layout of the .v files, and not on their contents (#5547, helps with #5100, @ejgallego)

  • The mdx stanza 0.2 can now be used with (implicit_transitive_deps false) (#5558, fixes #5499, @emillon)

  • Fix missing parenthesis in printing of corresponding terminal command for (with-outputs-to ) (#5551, fixes #5546, @Alizter)

Dune 3.0.3

See full changelog
  • Do not enable warnings 63-70 by default (#5476, fixes #5464, @rgrinberg)

  • Allow %{read-lines} to introduce dynamic dependencies like %{read}. (#5440, @anmonteiro)

  • Look up gmake before make (#5474, fixes #5470, @rgrinberg)

  • Handle empty output from getconf (#5473 fixes #5471, @mndrix)

  • Depend on any provided foreign_archives for ctypes stub generation (#5475, @mbacarella)

Dune 3.0.2

See full changelog
  • Fix compilation on MacOS SDK < 10.13. The native watch mode is disabled in such instances (#5431 fix #5430, @rgrinberg)

  • Do no add workspace_root to BUILD_PATH_PREFIX_MAP for projects before 3.0 (5448, @rgrinberg)

  • Fix performance regression in incremental builds (#5439, @snowleopard)

  • Fix digest computation bug introduced in 3.0.1 (#5451, @rgrinberg)

Dune 3.0.0

On behalf of the dune team, I’m delighted to announce the availability of dune 3.0.

The team has been working on this release for over 6 months, and there’s a bunch of new work to report. I’ll only highlight the some of the interesting new developments:

  • The watch mode has been rewritten from scratch to be faster and more scalable. We also no longer rely on any 3rd party tools such as fswatch. If any of you still have a dune workspace dune is still struggling with, we cannot wait to hear from you.

  • The watch mode now also starts an RPC server in the background. This RPC protocol is going to be the basis for other tools to interact with dune. Watch out for announcement on the LSP side to see how we’ll be making use of it to improve the editing experience.

  • The dune cache has been rewritten as well. It is now simpler and more reliable. There are still some components missing, such as distribution of the artifacts over the network. Nevertheless, we welcome you all to experiment with this feature and give us feedback.

  • We’ve addressed one of our oldest feature requests: high level rules for ctypes projects. This feature is still experimental, so we need feedback from real world projects before declaring it as mature.

Of course, there are many other fixes, enhancements, and only a few breaking changes in this release. We hope you have an easy time upgrading.

Happy Hacking.

See full changelog
  • Remove uchar and seq dummy ocamlfind libraries from dune's builtin library database (#5260, @kit-ty-kate)

  • Add a DUNE_DIFF_COMMAND environment variable to match --diff-command command-line parameter (@raphael-proust, fix #5369, #5375)

  • Add support for odoc-link rules (#5045, @jonludlam, @lubegasimon)

  • Dune will no longer generate documentation for hidden modules (#5045, @jonludlam, @lubegasimon)

  • Parse the native_pack_linker field of ocamlc -config (#5281, @TheLortex)

  • Fix plugins with dot in the name (#5182, @bobot, review @rgrinberg)

  • Don't generate the dune-site build part when not needed (#4861, @bobot, review @kit-ty-kate)

  • Fix installation of implementations of virtual libraries (#5150, fix #3636, @rgrinberg)

  • Run tests in all modes defined. Previously, jsoo was excluded. (@hhugo, #5049, fix #4951)

  • Allow to configure the alias to run the jsoo tests (@hhugo, #5049, #4999)

  • Set jsoo compilation flags in the env stanza (@hhugo, #5049, #1613)

  • Allow to configure jsoo separate compilation in the env stanza. Previously, it was hard coded to always be enabled in the dev profile. (@hhugo, #5049, fix #970)

  • Fix build-info version in jsoo executables (@hhugo, #5049, fix #4444)

  • Pass -no-check-prims when building bytecode for jsoo (@hhugo, #5049, #4027)

  • Fix jsoo builds when dynamically linked foreign archives are disabled (@hhugo, #5049)

  • Disallow empty packages starting from 3.0. Empty packages may be re-enabled by adding the (allow_empty) to the package stanza in the dune-project file. (#4867, fix #2882, @kit-ty-kate, @rgrinberg)

  • Add link_flags field to the executable field of inline_tests (#5088, fix #1530, @jvillard)

  • In watch mode, use fsevents instead of fswatch on OSX (#4937, #4990, fixes #4896 @rgrinberg)

  • Remove inotifywait watch mode backend on Linux. We now use the inotify API exclusively (#4941, @rgrinberg)

  • Report cycles between virtual libraries and their implementation (#5050, fixes #2896, @rgrinberg)

  • Warn when lang versions have an ignored suffix. (lang dune 2.3.4) or (lang dune 2.3suffix) were silently parsed as 2.3 and we know suggest to remove the prefix. (#5040, @emillon)

  • Allow users to specify dynamic dependencies in rules. For example (deps %{read:foo.gen}) (#4662, fixes #4089, @jeremiedimino)

  • Sandbox infer rules for menhir. Fixes possible "inconsistent assumptions" errors (#5015, @rgrinberg)

  • Experimental support for ctypes stubs (#3905, fixes #135, @mbacarella)

  • Fix interpretation of binaries defined in the env stanza. Binaries defined in x/dune wouldn't be visible in `x/*/**/dune. (#4975, fixes #4976, @Leonidas-from-XIV, @rgrinberg)

  • Do not list private libraries in package listings (#4945, fixes #4799, @rgrinberg)

  • Allow spaces in cram test paths (#4980, fixes #4162, @rgrinberg)

  • Improve error handling of misbehaving cram scripts. (#4981, fix #4230, @rgrinberg)

  • Fix foreign_stubs inside a tests stanza. Previously, dune would crash when this field was present (#4942, fix #4946, @rgrinberg)

  • Add the enabled_if field to inline_tests within the library stanza. This allows us to disable executing the inline tests while still allowing for compilation (#4939, @rgrinberg)

  • Generate a dune-project when initializing projects with dune init proj ... (#4881, closes #4367, @shonfeder)

  • Allow spaces in the directory argument of the subdir stanza (#4943, fixes #4907, @rgrinberg)

  • Add a %{toolchain} expansion variable (#4899, fixes #3949, @rgrinberg)

  • Include dependencies of executables when creating toplevels (either dune top or dune utop) (#4882, fixes #4872, @Gopiancode)

  • Fixes opam META file requires entry for private libs (#4841, fixes #4839, @toots)

  • Fixes dune exec not adding .exe on Windows (#4371, fixes #3322, @MisterDA)

  • Allow multiple cinaps stanzas in the same directory (#4460, @rgrinberg)

  • Fix $ dune subst in empty git repositories (#4441, fixes #3619, @rgrinberg)

  • Improve interpretation of ansi escape sequence when spawning processes (#4408, fixes #2665, @rgrinberg)

  • Allow (package pkg) in dependencies even if pkg is an installed package (#4170, @bobot)

  • Allow %{version:pkg} to work for external packages (#4104, @kit-ty-kate)

  • Add (glob_files_rec <dir>/<glob>) for globbing files recursively (#4176, @jeremiedimino)

  • Automatically generate empty .mli files for executables and tests (#3768, fixes #3745, @CraigFe)

  • Add ocaml command subgroup for OCaml related commands such as utop, top, and merlin (#3936, @rgrinberg).

  • Detect unknown variables more eagerly (#4184, @jeremiedimino)

  • Improve location of variables and macros in error messages (#4205, @jeremiedimino)

  • Auto-detect dune-project files as dune files in Emacs (#4222, @shonfeder)

  • Dune no longer automatically create or edit dune-project files (#4239, fixes #4108, @jeremiedimino)

  • Warn if dune-project is not found (fatal in release mode) (#5343, @emillon)

  • Cleanup temporary files after running $ dune exec. (#4260, fixes #4243, @rgrinberg)

  • Add a new subcommand dune ocaml dump-dot-merlin that prints a mix of all the merlin configuration of a directory (defaulting to the current directory) in the Merlin configuration syntax. (#4250, @voodoos)

  • Enable cram tests by default (#4262, @rgrinberg)

  • Drop support for opam 1.x (#4280, @jeremiedimino)

  • Stop calling ocamlfind to determine the library search path or library installation directory. This makes the behavior of Dune simpler and more reproducible (#4281, @jeremiedimino)

  • Remove the external-lib-deps command. This command was only approximative and the cost of maintainance was getting too high. We removed it to make room for new more important features (#4298, @jeremiedimino)

  • It is now possible to define action dependencies through a chain of aliases. (#4303, @aalekseyev)

  • If an .ml file is not used by an executable, Dune no longer report parsing error in this file (#4330, @jeremiedimino)

  • Add support for sandboxing using hard links (#4360, Andrey Mokhov)

  • Fix dune crash when subdir is an absolute path (#4366, @anmonteiro)

  • Changed the implementation of actions attached to aliases, as in (rule (alias runtest) (action (run ./test))). A visible result for users is that such actions are now memoized for longer. For instance:

    $ echo '(rule (alias runtest) (action (echo "X=%{env:X=0}\n")))` > dune
    $ X=1 dune runtest
    $ X=2 dune runtest
    $ X=1 dune runtest

    Previously, Dune would have re-executed the action again at the last line. Now it remembers the result of the first execution.

  • Fix a bug where dune would always re-run all actions that produce symlinks, even if their dependencies did not change. (#4405, @aalekseyev)

  • Fix a bug that was causing Dune to re-hash generated files more often than necessary (#4419, @jeremiedimino)

  • Fields allowed in the config file are now also allowed in the workspace file (#4426, @jeremiedimino)

  • Add options to control how Dune should handle stdout and stderr of actions when then succeed. It is now possible to ask Dune to ignore the stdout of actions when they succeed or to request that the stderr of actions must be empty. This allows to reduce the noise of large builds (#4422, #4515, @jeremiedimino)

  • The @all alias no longer depends directly on copies of files from the source directory (#4461, @nojb)

  • Allow dune-file as an alternative file name for dune files (needs to be enabled in the dune-project file) (#4428, @nojb)

  • Drop support for upgrading jbuilder projects (#4473, @jeremiedimino)

  • Extend the environment variable BUILD_PATH_PREFIX_MAP to rewrite the root of the build dir (or sandbox) to /workspace_root (#4466, @jeremiedimino)

  • Simplify the implementation of build cache. We stop using the cache daemon to access the cache and instead write to and read from it directly. The new cache implementation is based on Jenga's cache library, which was thoroughly tested on large-scale builds. Using Jenga's cache library will also make it easier for us to port Jenga's cloud cache to Dune. (#4443, #4465, Andrey Mokhov)

  • More informative error message when Dune can't read a target that's supposed to be produced by the action. Old message is still produced on ENOENT, but other errors deserve a more detailed report. (#4501, @aalekseyev)

  • Fixed a bug where a sandboxed action would fail if it declares no dependencies in its initial working directory or any directory it chdirs into. (#4509, @aalekseyev)

  • Fix a crash when clearing temporary directories (#4489, #4529, Andrey Mokhov)

  • Dune now memoizes all errors when running in the file-watching mode. This speeds up incremental rebuilds but may be inconvenient in rare cases, e.g. if a build action fails due to a spurious error, such as running out of memory. Right now, the only way to force such actions to be rebuilt is to restart Dune, which clears all memoized errors. In future, we would like to provide a way to rerun all actions failed due to errors without restarting the build, e.g. via a Dune RPC call. (#4522, Andrey Mokhov)

  • Remove dune compute. It was broken and unused (#4540, @jeremiedimino)

  • No longer generate an approximate merlin files when computing the ocaml flags fails, for instance because they include the contents of a file that failed to build. This was a niche feature and it was getting in the way of making Dune's core better. (#4607, @jeremiedimino)

  • Make Dune display the progress indicator in all output modes except quiet (#4618, @aalekseyev)

  • Report accurate process timing information in trace mode (enabled with --trace-file) (#4517, @rgrinberg)

  • Do not log live_words and free_words in trace file. This allows using Gc.quick_stat which does not scan the heap. (#4643, @emillon)

  • Don't let command run by Dune observe the environment variable INSIDE_EMACS in order to improve reproducibility (#4680, @jeremiedimino)

  • Fix root_module when used in public libraries (#4685, fixes #4684, @rgrinberg, @CraigFe)

  • Fix root_module when used with preprocessing (#4683, fixes #4682, @rgrinberg, @CraigFe)

  • Display Coq profile flags in dune printenv (#4767, @ejgallego)

  • Introduce mdx stanza 0.2, requiring mdx >= 1.9.0, with a new generic deps field and the possibility to statically link libraries in the test executable. (#3956, #5391, fixes #3955)

  • Improve lookup of optional or disabled binaries. Previously, we'd treat every executable with missing libraries as optional. Now, we treat make sure to look at the library's optional or enabled_if status (#4786).

  • Always use 7 char hash prefix in build info version (#4857, @jberdine, fixes #4855)

  • Allow to explicitly disable/enable the use of dune subst by adding a new (subst <disable|enable>) stanza to the dune-project file. (#4864, @kit-ty-kate)

  • Simplify the way dune discovers the root of the workspace. It now stops at the first dune-workspace file it encounters, and fails if it finds neither a dune-workspace nor a dune-project file (#4921, fixes #4459, @jeremiedimino)

  • Dune no longer reads installed META files for libraries distributed with the compiler, instead using its own internal database. (#4946, @nojb)

  • Add support for (empty_module_interface_if_absent) in executable and library stanzas. (#4955, @nojb)

  • Add support for %{bin-available:...} (#4995, @jeremiedimino)

  • Make sure running git or hg in a sandboxed action, such as a cram test cannot escape the sandbox and pick up some random git or mercurial repository on the file system (#4996, @jeremiedimino)

  • Allow %{read:...} in more places such as (enabled_if ...) (#4994, @jeremiedimino)

  • Run each action in its own process group so that we don't leave stray processes behind when killing actions (#4998, @jeremiedimino)

  • Add an option expand_aliases_in_sandbox (#5003, @jeremiedimino)

  • Allow to cancel the initial scan via Control+C (#4460, fixes #4364 @jeremiedimino)

  • Add experimental support for directory targets (#3316, #5025, Andrey Mokhov), enabled via (using directory-targets 0.1) in dune-project.

  • Delete old promote-into, promote-until-clean and promote-until-clean-into syntax (#5091, Andrey Mokhov).

  • Add link_flags in the env stanza (#5215)

  • Bootstrap: ignore errors when trying to remove generated files. (#5407, @damiendoligez)

Dune 2.9.3

See full changelog
  • Disable warning for deprecated Toploop functions used in dune files written in OCaml syntax. Restores 4.02 compatibility. (#5381, @nojb)

Dune 2.9.2

See full changelog
  • Fix missing -linkall flag when linking library dune-sites.plugin ( #4348, @kakadu, @bobot, reported by @kakadu)

  • No longer reference deprecated Toploop functions when using dune files in OCaml syntax. (#4834, fixes #4830, @nojb)

  • Use the stag format API to be compatible with OCaml 5.0 (#5351, @emillon).

  • Fix post-processing of dune-package (fix #4389, @strub)

Dune 2.9.1

Dear all,

on behalf of the Dune team I'm pleased to announce the release of Dune 2.9.1.

This is a minor release, fixing an important problem with opam file generation when (lang dune 2.9) was set, and a few other minor fixes.

See full changelog
  • Don't use subst --root in Opam files (https://github.com/ocaml/dune/pull/4806, @MisterDA)

  • Fix compilation on Haiku (https://github.com/ocaml/dune/pull/4885, @Sylvain78)

  • Allow depending on ocamldoc library when ocamlfind is not installed. (https://github.com/ocaml/dune/pull/4811, fixes https://github.com/ocaml/dune/issues/4809, @nojb)

  • Fix (enabled_if ...) for installed libraries (https://github.com/ocaml/dune/pull/4824, fixes https://github.com/ocaml/dune/issues/4821, @dra27)

  • Create more future-proof opam files using --promote-install-files=false (https://github.com/ocaml/dune/pull/4860, @bobot)

Dune 2.9.0

Dear all, on behalf of the Dune team I'm pleased to announce the release of Dune 2.9.0. This is the last release on the Dune 2.x series and could be considered a maintenance release as it mostly consists on bug fixes and miscellaneous tweaks and features for sites, instrumentation, and mdx support.

See full changelog
  • Add (enabled_if ...) to (mdx ...) (https://github.com/ocaml/dune/pull/4434, @emillon)

  • Add support for instrumentation dependencies (https://github.com/ocaml/dune/pull/4210, fixes https://github.com/ocaml/dune/issues/3983, @nojb)

  • Add the possibility to use locks with the cram tests stanza (https://github.com/ocaml/dune/pull/4480, @voodoos)

  • Allow to set up merlin in a variant of the default context (https://github.com/ocaml/dune/pull/4145, @TheLortex, @voodoos)

  • Add (package ...) to (mdx ...) (https://github.com/ocaml/dune/pull/4691, fixes https://github.com/ocaml/dune/issues/3756, @emillon)

  • Handle renaming of coq.kernel library to coq-core.kernel in Coq 8.14 (https://github.com/ocaml/dune/pull/4713, @proux01)

  • Fix generation of merlin configuration when using (include_subdirs unqualified) on Windows (https://github.com/ocaml/dune/pull/4745, @nojb)

  • Fix bug for the install of Coq native files when using (include_subdirs qualified) (https://github.com/ocaml/dune/pull/4753, @ejgallego)

  • Allow users to specify install target directories for doc and etc sections. We add new options --docdir and --etcdir to both Dune's configure and dune install command. (https://github.com/ocaml/dune/pull/4744, fixes https://github.com/ocaml/dune/issues/4723, @ejgallego, thanks to @JasonGross for reporting this issue)

  • Fix issue where Dune would ignore (env ... (coq (flags ...))) declarations appearing in dune files (https://github.com/ocaml/dune/pull/4749, fixes https://github.com/ocaml/dune/issues/4566, @ejgallego @rgrinberg)

  • Disable some warnings on Coq 8.14 and (lang coq (>= 0.3)) due to the rework of the Coq "native" compilation system (https://github.com/ocaml/dune/pull/4760, @ejgallego)

  • Fix a bug where instrumentation flags would be added even if the instrumentatation was disabled (@nojb, https://github.com/ocaml/dune/pull/4770)

  • Fix https://github.com/ocaml/dune/issues/4682: option -p takes now precedence on environement variable DUNE_PROFILE (https://github.com/ocaml/dune/pull/4730, https://github.com/ocaml/dune/pull/4774, @bobot, reported by @dra27 https://github.com/ocaml/dune/issues/4632)

  • Fix installation with opam of package with dune sites. The .install file is now produced by a local dune install during the build phase (https://github.com/ocaml/dune/pull/4730, https://github.com/ocaml/dune/pull/4645, @bobot, reported by @kit-ty-kate https://github.com/ocaml/dune/issues/4198)

  • Fix multiple issues in the sites feature (https://github.com/ocaml/dune/pull/4730, https://github.com/ocaml/dune/pull/4645 @bobot, reported by @Lelio-Brun https://github.com/ocaml/dune/issues/4219, by @Kakadu https://github.com/ocaml/dune/issues/4325, by @toots https://github.com/ocaml/dune/issues/4415)

Dune 2.8.5

See full changelog
  • Fixed absence of executable bit for installed .cmxs (#4149, fixes #4148, @bobot)

  • Fix a race in Dune cache. It was particularly easy to hit this race when using the cache on Windows (#4406, fixes #4167, @snowleopard)

Dune 2.8.4

See full changelog
  • Make patdiff show refined diffs (#4257, fixes #4254, @hakuch)

  • Fixed a bug that could result in needless recompilation under Windows due to case differences in the result of Sys.getcwd (observed under emacs). (#3966, @nojb).

  • Restore compatibility with Coq < 8.10 for coq-lang < 0.3 , document that (using coq 0.3) does require Coq 8.10 at least (#4224, fixes #4142, @ejgallego)

  • Add a META rule for compiler-libs.native-toplevel (#4175, @altgr)

  • No longer call chmod on symbolic links (fixes #4195, @dannywillems)

  • Have dune communicate the location of the standard library directory to merlin (#4211, fixes #4188, @nojb)

  • Workaround incorrect exception raised by Unix.utimes (OCaml PR#8857) in Path.touch on Windows. This fixes dune cache in direct mode on Windows. (#4223, @dra27)

  • dune ocaml-merlin is now able to provide configuration for source files in the _build directory. (#4274, @voodoos)

  • Automatically delete left-over Merlin files when rebuilding for the first time a project previously built with Dune <= 2.7. (#4261, @voodoos, @aalekseyev)

  • Fix ppx.exe being compiled for the wrong target when cross-compiling (#3751, fixes #3698, @toots)

  • dune top correctly escapes the generated toplevel directives, and make it easier for dune top to locate C stubs associated to concerned libraries. (#4242, fixes #4231, @nojb)

  • Do not pass include directories containing native objects when compiling bytecode (#4200, @nojb)

  • Fix crash when META file for compiler-libs.toplevel is present (@jeremiedimino, #4249)

Dune 2.8.2

See full changelog
  • Fixed wrong workspace discovery from dune ocaml-merlin (#4127, fixes #4125, @voodoos)

  • Fixed memory blow up introduced in 2.8.0 (#4144, fixes #4134, @jeremiedimino)

  • Configurator: always link the C libraries in the build command (#4088, @MisterDA).

Dune 2.8.1

See full changelog
  • Fixed dune --version printing n/a rather than the version

Dune 2.8.0

On behalf of the dune, I'm pleased to announce the release of dune 2.8.0. This release contains many bug fixes, performance improvements, and interesting new features. I'll point out two new features that I'm most excited about.

First is the experimental dune_site extension that makes it possible to register and load plugins at runtime. This feature is quite involved, but we've documented it extensively in the manual.

Another cool feature is that we've eliminated the need for .merlin files and all the caveats that came with them. Now, merlin talks to dune directly to get precise configuration for every module. Say goodbye to all those "approximate .merlin file" warnings!

I encourage everyone to upgrade as soon as possible, as earlier versions are not compatible with OCaml 4.12. Happy Hacking.

See full changelog
  • dune rules accepts aliases and other non-path rules (#4063, @mrmr1993)

  • Action (diff reference test_result) now accept reference to be absent and in that case consider that the reference is empty. Then running dune promote will create the reference file. (#3795, @bobot)

  • Ignore special files (BLK, CHR, FIFO, SOCKET), (#3570, fixes #3124, #3546, @ejgallego)

  • Experimental: Simplify loading of additional files (data or code) at runtime in programs by introducing specific installation sites. In particular it allow to define plugins to be installed in these sites. (#3104, #3794, fixes #1185, @bobot)

  • Move all temporary files created by dune to run actions to a single directory and make sure that actions executed by dune also use this directory by setting TMPDIR (or TEMP on Windows). (#3691, fixes #3422, @rgrinberg)

  • Fix bootstrap script with custom configuration. (#3757, fixes #3774, @marsam)

  • Add the executable field to inline_tests to customize the compilation flags of the test runner executable (#3747, fixes #3679, @lubegasimon)

  • Add (enabled_if ...) to (copy_files ...) (#3756, @nojb)

  • Make sure Dune cleans up the status line before exiting (#3767, fixes #3737, @alan-j-hu)

  • Add {gitlab,bitbucket} as options for defining project sources with source stanza (source (<host> user/repo)) in the dune-project file. (#3813, @rgrinberg)

  • Fix generation of META and dune-package files when some targets (byte, native, dynlink) are disabled. Previously, dune would generate all archives for regardless of settings. (#3829, #4041, @rgrinberg)

  • Do not run ocamldep to for single module executables & libraries. The dependency graph for such artifacts is trivial (#3847, @rgrinberg)

  • Fix cram tests inside vendored directories not being interpreted correctly. (#3860, fixes #3843, @rgrinberg)

  • Add package field to private libraries. This allows such libraries to be installed and to be usable by other public libraries in the same project (#3655, fixes #1017, @rgrinberg)

  • Fix the %{make} variable on Windows by only checking for a gmake binary on UNIX-like systems as a unrelated gmake binary might exist on Windows. (#3853, @kit-ty-kate)

  • Fix $ dune install modifying the build directory. This made the build directory unusable when $ sudo dune install modified permissions. (fix #3857, @rgrinberg)

  • Fix handling of aliases given on the command line (using the @ and @@ syntax) so as to correctly handle relative paths. (#3874, fixes #3850, @nojb)

  • Allow link time code generation to be used in preprocessing executable. This makes it possible to use the build info module inside the preprocessor. (#3848, fix #3848, @rgrinberg)

  • Correctly call git ls-tree so unicode files are not quoted, this fixes problems with dune subst in the presence of unicode files. Fixes #3219 (#3879, @ejgallego)

  • dune subst now accepts common command-line arguments such as --debug-backtraces (#3878, @ejgallego)

  • dune describe now also includes information about executables in addition to that of libraries. (#3892, #3895, @nojb)

  • instrumentation backends can now receive arguments via (instrumentation (backend <name> <args>)). (#3906, #3932, @nojb)

  • Tweak auto-formatting of dune files to improve readability. (#3928, @nojb)

  • Add a switch argument to opam when context is not default. (#3951, @tmattio)

  • Avoid pager when running $ git diff (#3912, @AltGr)

  • Add (root_module ..) field to libraries & executables. This makes it possible to use library dependencies shadowed by local modules (#3825, @rgrinberg)

  • Allow (formatting ...) field in (env ...) stanza to set per-directory formatting specification. (#3942, @nojb)

  • [coq] In coq.theory, :standard for the flags field now uses the flags set in env profile flags (#3931 , @ejgallego @rgrinberg)

  • [coq] Add -q flag to :standard coqc flags , fixes #3924, (#3931 , @ejgallego)

  • Add support for Coq's native compute compilation mode (@ejgallego, #3210)

  • Add a SUFFIX directive in .merlin files for each dialect with no preprocessing, to let merlin know of additional file extensions (#3977, @vouillon)

  • Stop promoting .merlin files. Write per-stanza Merlin configurations in binary form. Add a new subcommand dune ocaml-merlin that Merlin can use to query the configuration files. The allow_approximate_merlin option is now useless and deprecated. Dune now conflicts with merlin < 3.4.0 and ocaml-lsp-server < 1.3.0 (#3554, @voodoos)

  • Configurator: fix a bug introduced in 2.6.0 where the configurator V1 API doesn't work at all when used outside of dune. (#4046, @aalekseyev)

  • Fix libexec and libexec-private variables. In cross-compilation settings, they now point to the file in the host context. (#4058, fixes #4057, @TheLortex)

  • When running $ dune subst, use project metadata as a fallback when package metadata is missing. We also generate a warning when (name ..) is missing in dune-project files to avoid failures in production builds.

  • Remove support for passing -nodynlink for executables. It was bypassed in most cases and not correct in other cases in particular on arm32. (#4085, fixes #4069, fixes #2527, @emillon)

  • Generate archive rules compatible with 4.12. Dune longer attempt to generate an archive file if it's unnecessary (#3973, fixes #3766, @rgrinberg)

  • Fix generated Merlin configurations when multiple preprocessors are defined for different modules in the same folder. (#4092, fixes #2596, #1212 and #3409, @voodoos)

  • Add the option use_standard_c_and_cxx_flags to dune-project that 1. disables the unconditional use of the ocamlc_cflags and ocamlc_cppflags from ocamlc -config in C compiler calls, these flags will be present in the :standard set instead; and 2. enables the detection of the C compiler family and populates the :standard set of flags with common default values when building CXX stubs. (#3875, #3802, fix #3718 and #3528, @voodoos)

Dune 2.7.1

See full changelog
  • configurator: More flexible probing of #define. We allow duplicate values in the object file, as long as they are the same after parsing. (#3739, fixes #3736, @rgrinberg)

  • Record instrumentation backends in dune-package files. This makes it possible to use instrumentation backends defined in installed libraries (eg via OPAM). (#3735, @nojb)

  • Add missing .aux & .glob targets to coq rules (#3721, fixes #3437, @rgrinberg)

  • Fix dune-package installation when META templates are present (#3743, fixes #3746, @rgrinberg)

  • Resolve symlinks before running $ git diff (#3750, fixes #3740, @rgrinberg)

  • Cram tests: when checking that all test directories contain a run.t file, skip empty directories. These can be left around by git. (#3753, @emillon)

Dune 2.7.0

On behalf of the dune team, I'm pleased to announce the release of dune 2.7.0. This release adds a couple of important features and many bug fixes. I'll just briefly summarize the two features, and let our improved documentation elaborate on the details.

The first one is first class support for instrumentation tools such as bisect_ppx and landmarks. This is one of the most requested dune features ever, and we're pleased to show you all what we've come up with

Special thanks to @stephanieyou & @nojb for implementing this feature. Many thanks to @aantron for tirelessly iterating on the end user experience with us.

While the features is looking quite good already, we consider it a "first take" on this subject. We welcome your experience reports and feature requests.

The second feature we're introducing this release is dune's cram testing framework. The cram framework is our secret weapon for making dune (relatively) bug free. I'll soon write up a dedicated post to give you a flavour of how it works. To those who can't wait, there's a new section in the documentation that explains everything.

As always, the change log is replicated below for your convenience.

Happy Hacking.

See full changelog
  • Write intermediate files in a .mdx folder for each mdx stanza to prevent the corresponding actions to be executed as part of the @all alias (#3659, @NathanReb)

  • Read Coq flags from env (#3547 , fixes #3486, @gares)

  • Allow bisect_ppx to be enabled/disabled via dune-workspace. (#3404, @stephanieyou)

  • Formatting of dune files is now done in the executing dune process instead of in a separate process. (#3536, @nojb)

  • Add a --debug-artifact-substution flag to help debug problem with version not being captured by dune-build-info (#3589, @jeremiedimino)

  • Allow the use of the context_name variable in the enabled_if fields of executable(s) and install stanzas. (#3568, fixes #3566, @voodoos)

  • Fix compatibility with OCaml 4.12.0 when compiling empty archives; no .a file is generated. (#3576, @dra27)

  • $ dune utop no longer tries to load optional libraries that are unavailable (#3612, fixes #3188, @anuragsoni)

  • Fix dune-build-info on 4.10.0+flambda (#3599, @emillon, @jeremiedimino).

  • Allow multiple libraries with inline_tests to be defined in the same directory (#3621, @rgrinberg)

  • Run exit hooks in jsoo separate compilation mode (#3626, fixes #3622, @rgrinberg)

  • Add (alias ...), (mode ...) fields to (copy_fields ...) stanza (#3631, @nojb)

  • (copy_files ...) now supports copying files from outside the workspace using absolute file names (#3639, @nojb)

  • Dune does not use ocamlc as an intermediary to call C compiler anymore. Configuration flags ocamlc_cflags and ocamlc_cppflags are always prepended to the compiler arguments. (#3565, fixes #3346, @voodoos)

  • Revert the build optimization in #2268. This optimization slows down building individual executables when they're part of an executables stanza group (#3644, @rgrinberg)

  • Use {dev} rather than {pinned} in the generated .opam file. (#3647, @kit-ty-kate)

  • Insert correct extension name when editing dune-project files. Previously, dune would just insert the stanza name. (#3649, fixes #3624, @rgrinberg)

  • Fix crash when evaluating an mdx stanza that depends on unavailable packages. (#3650, @CraigFe)

  • Fix typo in cache-check-probablity field in dune config files. This field now requires 2.7 as it wasn't usable before this version. (#3652, @edwintorok)

  • Add "odoc" {with-doc} to the dependencies in the generated .opam files. (#3667, @kit-ty-kate)

  • Do not allow user actions to capture dune's stdin (#3677, fixes #3672, @rgrinberg)

  • (subdir ...) stanzas can now appear in dune files used via (include ...). (#3676, @nojb)

Dune 2.6.2

See full changelog
  • Fix compatibility with OCaml 4.12 (#3585, fixes #3583, @ejgallego)

Dune 2.6.1

See full changelog
  • Fix crash when caching is enabled (@rgrinberg, #3581, fixes #3580)

  • Do not use -output-complete-exe until 4.10.1 as it is broken in 4.10.0 (@jeremiedimino, #3187)

  • Fix crash when an unknown pform is found (such as %{unknown}) (#3560, @emillon)

  • Improve error message when invalid package names (such as the empty string) are passed to dune build -p. (#3561, @emillon)

  • Fix a stack overflow when displaying large outputs (including diffs) (#3537, fixes #2767, #3490, @emillon)

  • Pass -g when compiling ppx preprocessors (#3671, @rgrinberg)

Dune 2.6.0

See full changelog
  • Fix a bug where valid lib names in dune init exec --libs=lib1,lib2 results in an error. (#3444, fix #3443, @bikallem)

  • Add and enabled_ if field to the install stanza. Enforce the same variable restrictions for enabled_if fields in the executable and install stanzas than in the library stanza. When using dune lang < 2.6, the usage of forbidden variables in executables stanzas with only trigger a warning to maintain compatibility. (#3408 and #3496, fixes #3354, @voodoos)

  • Insert a constraint one the version of dune when the user explicitly specify the dependency on dune in the dune-project file (#3434 , fixes #3427, @diml)

  • Generate correct META files for sub-libraries (of the form lib.foo) that contain .js runtime files. (#3445, @hhugo)

  • Add a (no-infer ...) action that prevents inference of targets and dependencies in actions. (#3456, fixes #2006, @roddyyaga)

  • Correctly infer targets for the diff? action. (#3457, fixes #2990, @greedy)

  • Fix $ dune print-rules crashing (#3459, fixes #3440, @rgrinberg)

  • Simplify js_of_ocaml rules using js_of_ocaml.3.6 (#3375, @hhugo)

  • Add a new ocaml-merlin subcommand that can be used by Merlin to get configuration directly from dune instead of using .merlin files. (#3395, @voodoos)

  • Remove experimental variants feature and make default implementations part of the language (#3491, fixes #3483, @rgrinberg)

Dune 2.5.1

See full changelog
  • [coq] Fix install .v files for Coq theories (#3384, @lthms)

  • [coq] Fix install path for theory names with level greater than 1 (#3358, @ejgallego)

  • Fix a bug introduced in 2.0.0 where the [locks] field in rules with no targets had no effect. (@aalekseyev, report by @craigfe)

Dune 2.5.0

The dune team is pleased to announce the release of dune 2.5.0. This release has been brewing for a while and contains a few interesting features. I'll highlight some of the bigger ones:

  • The coq support has been thoroughly extended. There's now support for both composition of coq libraries in the same workspace and extraction of coq code to OCaml.

  • There's a new $ dune upgrade subcommand to help you upgrade dune files from 1.x to 2.x

  • $ dune utop will now load ppx preprocessors to the toplevel. Ppx authors might enjoy this style of interactive development.

  • There's a new (subdir ..) stanza that can be used to evaluate stanzas in sub directories. This makes it possible to have a single dune file for an entire project (generated or not).

I'd like to thank everyone who contributed to dune 2.5.0. Your help is greatly appreciated.

See full changelog
  • Add a --release option meaning the same as -p but without the package filtering. This is useful for custom dune invocation in opam files where we don't want -p (#3260, @jeremiedimino)

  • Fix a bug introduced in 2.4.0 causing .bc programs to be built with -custom by default (#3269, fixes #3262, @jeremiedimino)

  • Allow contexts to be defined with local switches in workspace files (#3265, fix #3264, @rgrinberg)

  • Delay expansion errors until the rule is used to build something (#3261, fix #3252, @rgrinberg, @jeremiedimino)

  • [coq] Support for theory dependencies and compositional builds using new field (theories ...) (#2053, @ejgallego, @rgrinberg)

  • From now on, each version of a syntax extension must be explicitely tied to a minimum version of the dune language. Inconsistent versions in a dune-project will trigger a warning for version <=2.4 and an error for versions >2.4 of the dune language. (#3270, fixes #2957, @voodoos)

  • [coq] Bump coq lang version to 0.2. New coq features presented this release require this version of the coq lang. (#3283, @ejgallego)

  • Prevent installation of public executables disabled using the enabled_if field. Installation will now simply skip such executables instead of raising an error. (#3195, @voodoos)

  • dune upgrade will now try to upgrade projects using versions <2.0 to version 2.0 of the dune language. (#3174, @voodoos)

  • Add a top command to integrate dune with any toplevel, not just utop. It is meant to be used with the new #use_output directive of OCaml 4.11 (#2952, @mbernat, @jeremiedimino)

  • Allow per-package version in generated opam files (#3287, @toots)

  • [coq] Introduce the coq.extraction stanza. It can be used to extract OCaml sources (#3299, fixes #2178, @rgrinberg)

  • Load ppx rewriters in dune utop and add pps field to toplevel stanza. Ppx extensions will now be usable in the toplevel (#3266, fixes #346, @stephanieyou)

  • Add a (subdir ..) stanza to allow evaluating stanzas in sub directories. (#3268, @rgrinberg)

  • Fix a bug preventing one from running inline tests in multiple modes (#3352, @jeremiedimino)

  • Allow the use of the %{profile} variable in the enabled_if field of the library stanza. (#3344, @mrmr1993)

  • Allow the use of %{ocaml_version} variable in enabled_if field of the library stanza. (#3339, @voodoos)

  • Fix dune build freezing on MacOS when cache is enabled. (#3249, fixes ##2973, @artempyanykh)

Dune 2.4.0

On behalf of the dune team, I'm pleased to announce the release of dune 2.4.0. This releases features support for mdx, an interesting take on the notebook paradigm by the RWO team. This release also includes a crucial fix to polling mode which makes it usable in environments with finite memory :slight_smile:.

Happy hacking!

See full changelog
  • Add mdx extension and stanza version 0.1 (#3094, @NathanReb)

  • Allow to make Odoc warnings fatal. This is configured from the (env ...) stanza. (#3029, @Julow)

  • Fix separate compilation of JS when findlib is not installed. (#3177, @nojb)

  • Add a dune describe command to obtain the topology of a dune workspace, for projects such as ROTOR. (#3128, @jeremiedimino)

  • Add plugin linking mode for executables and the (embed_in_plugin_libraries ...) field. (#3141, @nojb)

  • Add an %{ext_plugin} variable (#3141, @nojb)

  • Dune will no longer build shared objects for stubs if supports_shared_libraries is false (#3225, fixes #3222, @rgrinberg)

  • Fix a memory leak in the file-watching mode (dune build -w) (#3220, @snowleopard and @aalekseyev)

Dune 2.3.1

See full changelog
  • Fix versioning of artifact variables (eg %{cmxa:...}), which were introduced in 2.0, not 1.11. (#3149, @nojb)

  • Fix a bug introduced in 2.3.0 where dune insists on using fswatch on linux (even when inotifywait is available). (#3162, @aalekseyev)

  • Fix a bug causing all executables to be considered as optional (#3163, @diml)

Dune 2.3.0

On behalf of the dune team, I'm proud to announce the 2.3.0 release of dune. This release is particularly relevant for users of coq that use dune to build their theories, developers of coq that use dune to build their favorite theorem prover. I'd like to thank @ejgallego for all the hard work to improve dune in this regard.

I'd also like to point out the (strict_package_deps) option that is now available in project files. This option will now ask dune to validate the package dependencies specified in the package stanzas in your dune-project files.

Here's the full change list, and as always, happy hacking!

See full changelog
  • Improve validation and error handling of arguments to dune init (#3103, fixes #3046, @shonfeder)

  • dune init exec NAME now uses the NAME argument for private modules (#3103, fixes #3088, @shonfeder)

  • Avoid linear walk to detect children, this should greatly improve performance when a target has a large number of dependencies (#2959, @ejgallego, @aalekseyev, @Armael)

  • [coq] Add (boot) option to (coq.theories) to enable bootstrap of Coq's stdlib (#3096, @ejgallego)

  • [coq] Deprecate public_name field in favour of package (#2087, @ejgallego)

  • Better error reporting for "data only" and "vendored" dirs. Using these with anything else than a strict subdirectory or * will raise an error. The previous behavior was to just do nothing (#3056, fixes #3019, @voodoos)

  • Fix bootstrap on bytecode only switches on windows or where -j1 is set. (#3112, @xclerc, @rgrinberg)

  • Allow enabled_if fields in executable(s) stanzas (#3137, fixes #1690 @voodoos)

  • Do not fail if ocamldep, ocamlmklib, or ocaml are absent. Wait for them to be used to fail (#3138, @rgrinberg)

  • Introduce a strict_package_deps mode that verifies that dependencies between packages in the workspace are specified correctly. (@rgrinberg, #3117)

  • Make sure the @all alias is defined when no dune file is present in a directory (#2946, fix #2927, @jeremiedimino)

Dune 2.2.0

See full changelog
  • dune test is now a command alias for dune runtest. This is to make the CLI less idiosyncratic (#3006, @shonfeder)

  • Allow to set menhir flags in the env stanza using the menhir_flags field. (#2960, fix #2924, @bschommer)

  • By default, do not show the full command line of commands executed by dune when dune is executed inside dune. This is to make integration tests more reproducible (#3042, @diml)

  • dune subst now works even without opam files (#2955, fixes #2910, @fangyi-zhou and @diml)

  • Hint when trying to execute an executable defined in the current directory without using the ./ prefix (#3041, fixes #1094, @voodoos).

  • Extend the list of modifiers that can be nested under with-accepted-exit-codes with chdir, setenv, ignore-<outputs>, with-stdin-from and with-<outputs>-to (#3027, fixes #3014, @voodoos)

  • It is now an error to have a preprocessing dependency on a ppx rewriter library that is not marked as (kind ppx_rewriter) (#3039, @snowleopard).

  • Fix permissions of files promoted to the source tree when using the shared cache. In particular, make them writable by the user (#3043, fixes #3026, @diml)

  • Only detect internal OCaml tools with .opt extensions. Previously, this detection applied to other binaries as well (@kit-ty-kate, @rgrinberg, #3051).

  • Give the user a proper error message when they try to promote into a source directory that doesn't exist. (#3073, fix #3069, @rgrinberg)

  • Correctly build vendored packages in -p mode. These packages were incorrectly filtered out before. (#3075, @diml)

  • Do not install vendored packages (#3074, @diml)

  • make now prints a message explaining the main targets available (#3085, fix #3078, @diml)

  • Add a byte_complete executable mode to build programs as self-contained bytecode programs (#3076, fixes #1519, @diml)

Dune 2.1.3

See full changelog
  • Fix building the OCaml compiler with Dune (#3038, fixes #2974, @diml)

Dune 2.1.2

See full changelog
  • Fix a bug in the Fiber.finalize function of the concurrency monad of Dune, causing a race condition at the user level (#3009, fix #2958, @diml)

Dune 2.1.1

See full changelog
  • Attach cinaps stanza actions to both @runtest and @cinaps aliases (#2831, @NathanReb)

  • Add variables %{lib-private...} and %{libexec-private...} for finding build paths of files in public and private libraries within the same project. (#2901, @snowleopard)

  • Add --mandir option to $ dune install. This option allows to override the installation directory for man pages. (#2915, fixes #2670, @rgrinberg)

  • Fix dune --version. The bootstrap didn't compute the version correctly. (#2929, fixes #2911, @diml)

  • Do not open the log file in dune clean. (#2965, fixes #2964 and #2921, @diml)

  • Support passing two arguments to =, <>, ... operators in package dependencies so that we can have things such as (<> :os win32) (#2965, @diml)

  • Guess foreign archives & native archives for libraries defined using the META format. (#2994, @rgrinberg, @anmonteiro)

  • Fix generation of .merlin files when depending on local libraries with more than one source directory. (#2983, @rgrinberg)

Dune 2.0.1

See full changelog
  • Delay errors raised by invalid dune-package files. The error is now raised only if the invalid package is treated as a library and used to build something. (#2972, @rgrinberg)

Dune 2.0.0

On behalf of the dune team, I'm delighted to announce the release of dune 2.0. This release is the culmination of 4 months of hard work by the dune team and contains new features, bug fixes, and performance improvements . Here's a selection of new features that I personally find interesting:

  • New boostrap procedure that works in low memory environments
  • (deprecated_library_name ..) stanza to properly deprecate old library names
  • (foreign_library ..) stanza to define C/C++ libraries.
  • C stubs directly in OCaml executables

Refer to the change log for an exhaustive list.

We strive for a good out of the box experience that requires no configuration, so we've also tweaked a few defaults. In particular, $ dune build will now build @all instead of @install, and ocamlformat rules are setup by default.

Lastly, dune 2.0 sheds all the legacy related to jbuilder and will no longer build jbuilder projects. This change is necessary to ease maintenance and make it easier to add new features down the line. There are a few other minor breaking changes. Refer to the change log for the full list. We apologize in advance for any convenience this might cause.

Happy Hacking!

See full changelog
  • Remove existing destination files in install before installing the new ones. (#2885, fixes #2883, @bschommer)

  • The action field in the alias stanza is not available starting lang dune 2.0. The alias field in the rule stanza is a replacement. (#2846, fixes 2681, @rgrinberg)

  • Introduce alias and package fields to the rule stanza. This is the preferred way of attaching rules to aliases. (#2744, @rgrinberg)

  • Add field (optional) for executable stanzas (#2463, fixes #2433, @bobot)

  • Infer targets for rule stanzas expressed in long form (#2494, fixes #2469, @NathanReb)

  • Indicate the progress of the initial file tree loading (#2459, fixes #2374, @bobot)

  • Build .cm[ox] files for executables more eagerly. This speeds up builds at the cost of building unnecessary artifacts in some cases. Some of these extra artifacts can fail to built, so this is a breaking change. (#2268, @rgrinberg)

  • Do not put the <package>.install files in the source tree unless -p or --promote-install-files is passed on the command line (#2329, @jeremiedimino)

  • Compilation units of user defined executables are now mangled by default. This is done to prevent the accidental collision with library dependencies of the executable. (#2364, fixes #2292, @rgrinberg)

  • Enable (explicit_js_mode) by default. (#1941, @nojb)

  • Add an option to clear the console in-between builds with --terminal-persistence=clear-on-rebuild

  • Stop symlinking object files to main directory for stanzas defined jbuild files (#2440, @rgrinberg)

  • Library names are now validated in a strict fashion. Previously, invalid names would be allowed for unwrapped libraries (#2442, @rgrinberg)

  • mli only modules must now be explicitly declared. This was previously a warning and is now an error. (#2442, @rgrinberg)

  • Modules filtered out from the module list via the Ordered Set Language must now be actual modules. (#2442, @rgrinberg)

  • Actions which introduce targets where new targets are forbidden (e.g. preprocessing) are now an error instead of a warning. (#2442, @rgrinberg)

  • No longer install a jbuilder binary. (#2441, @jeremiedimino)

  • Stub names are no longer allowed relative paths. This was previously a warning and is now an error (#2443, @rgrinberg).

  • Define (paths ...) fields in (context ...) definitions in order to set or extend any PATH-like variable in the context environment. (#2426, @nojb)

  • The diff action will always normalize newlines before diffing. Perviousy, it would not do this normalization for rules defined in jbuild files. (#2457, @rgrinberg)

  • Modules may no longer belong to more than one stanza. This was previously allowed only in stanzas defined in jbuild files. (#2458, @rgrinberg)

  • Remove support for jbuild-ignore files. They have been replaced by the the dirs stanza in dune files. (#2456, @rgrinberg)

  • Add a new config option sandboxing_preference, the cli argument --sandbox, and the dep spec sandbox in dune language. These let the user control the level of sandboxing done by dune per rule and globally. The rule specification takes precedence. The global configuration merely specifies the default. (#2213, @aalekseyev, @jeremiedimino)

  • Remove support for old style subsystems. Dune will now emit a warning to reinstall the library with the old style subsystem. (#2480, @rgrinberg)

  • Add action (with-stdin-from ) to redirect input from when performing . (#2487, @nojb)

  • Change the automatically generated odoc index to only list public modules. This only affects unwrapped libraries (#2479, @rgrinberg)

  • Set up formatting rules by default. They can be configured through a new (formatting) stanza in dune-project (#2347, fixes #2315, @emillon)

  • Change default target from @install to @all. (#2449, fixes #1220, @rgrinberg)

  • Include building stubs in @check rules. (@rgrinberg, #2530)

  • Get rid of ad-hoc rules for guessing the version. Dune now only relies on the version written in the dune-project file and no longer read VERSION or similar files (#2541, @jeremiedimino)

  • In (diff? x y) action, require x to exist and register a dependency on that file. (#2486, @aalekseyev)

  • On Windows, an .exe suffix is no longer added implicitly to binary names that already end in .exe. Second, when resolving binary names, .opt variants are no longer chosen automatically. (#2543, @nojb)

  • Make (diff? x y) move the correction file (y) away from the build directory to promotion staging area. This makes corrections work with sandboxing and in general reduces build directory pollution. (#2486, @aalekseyev, fixes #2482)

  • c_flags, c_names and cxx_names are now supported in executable and executables stanzas. (#2562, @nojb) Note: this feature has been subsequently extended into a separate foreign_stubs field. (#2659, RFC #2650, @snowleopard)

  • Remove git integration from $ dune upgrade (#2565, @rgrinberg)

  • Add a --disable-promotion to disable all modification to the source directory. There's also a corresponding DUNE_DISABLE_PROMOTION environment variable. (#2588, fix #2568, @rgrinberg)

  • Add a forbidden_libraries field to prevent some library from being linked in an executable. This help detecting who accidently pulls in unix for instance (#2570, @jeremiedimino)

  • Fix incorrect error message when a variable is expanded in static context: %{lib:lib:..} when the library does not exist. (#2597, fix #1541, @rgrinberg)

  • Add --sections option to $ dune install to install subsections of .install files. This is useful for installing only the binaries in a workspace for example. (#2609, fixes #2554, @rgrinberg)

  • Drop support for jbuild and jbuild-ignore files (#2607, @jeremiedimino)

  • Add a dune-action-plugin library for describing dependencies direcly in the executable source. Programs that use this feature can be run by a new action (dynamic-run ...). (#2635, @staronj, @aalekseyev)

  • Stop installing the ocaml-syntax-shims binary. In order to use future_syntax, one now need to depend on the ocaml-syntax-shims package (#2654, @jeremiedimino)

  • Add support for dependencies that are re-exported. Such dependencies are marked withre_export and will automatically be provided to users of a library (#2605, @rgrinberg)

  • Add a deprecated_library_name stanza to redirect old names after a library has been renamed (#2528, @jeremiedimino)

  • Error out when a preprocessor_deps field is present but not preprocess field is. It is a warning with Dune 1.x projects (#2660, @Julow)

  • Dune will use -output-complete-exe instead of -custom when compiling self-contained bytecode executables whenever this options is available (OCaml version >= 4.10) (#2692, @nojb)

  • Add action (with-accepted-exit-codes <pred> <action>) to specify the set of successful exit codes of <action>. <pred> is specified using the predicate language. (#2699, @nojb)

  • Do not setup rules for disabled libraries (#2491, fixes #2272, @bobot)

  • Configurator: filter out empty flags from pkg-config (#2716, @AltGr)

  • no_keep_locs is a no-op for projects that use lang dune older than 2.0. In projects where the language is at least 2.0, the field is now forbidden. (#2752, fixes #2747, @rgrinberg)

  • Extend support for foreign sources and archives via the (foreign_library ...) stanza as well as the (foreign_stubs ...) and (foreign_archives ...) fields. (#2659, RFC #2650, @snowleopard)

  • Add (deprecated_package_names) field to (package) declaration in dune-project. The names declared here can be used in the (old_public_name) field of (deprecated_library_name) stanza. These names are interpreted as library names (not prefixed by a package name) and appropiate redirections are setup in their META files. This feaure is meant to migrate old libraries which do not follow Dune's convention of prefixing libraries with the package name. (#2696, @nojb)

  • The fields license, authors, maintainers, source, bug_reports, homepage, and documentation of dune-project can now be overriden on a per-package basis. (#2774, @nojb)

  • Change the default modes field of executables to (mode exe). If one wants to build a bytecode program, it now needs to be explicitly requested via (modes byte exe). (#2851, @jeremiedimino)

  • Allow ccomp_type as a variable for evaluating enabled_if. (#2855, @dra27, @rgrinberg)

  • Stricter validation of file names in select. The file names of conditional sources must match the prefix and the extension of the resultant filename. (#2867, @rgrinberg)

  • Add flag disable_dynamically_linked_foreign_archives to the workspace file. If the flag is set to true then: (i) when installing libraries, we do not install dynamic foreign archives dll*.so; (ii) when building executables in the byte mode, we statically link in foreign archives into the runtime system; (iii) we do not generate any dll*.so rules. (#2864, @snowleopard)

  • Reimplement the bootstrap procedure. The new procedure is faster and should no longer stack overflow (#2854, @dra27, @jeremiedimino)

  • Allow .opam.template files to be generated using rules (#2866, @rgrinberg)

Dune 1.11.4

See full changelog
  • Allow to mark directories as data_only_dirs without including them as dirs (#2619, fix #2584, @rgrinberg)

  • Fix reading .install files generated with an external --build-dir. (#2638, fix #2629, @rgrinberg)

If you want to contribute to a new release announcement, check out the Contributing Guide on GitHub.