[new release] dune (15 packages) (3.17.0~alpha0)

[maiste]

Fast, portable, and opinionated build system

• Project page: https://github.com/ocaml/dune
• Documentation: https://dune.readthedocs.io/

CHANGES:

Fixed

• Show the context name for errors happening in non-default contexts.
  (Show the context name for errors happening in "alt" contexts dune#10414, fixes Include the context name for errors that happen in the non-default context dune#10378, @jchavarri)

• Correctly declare dependencies of indexes so that they are rebuilt when
  needed. (Indexing rules: correctly declare indexes dependencies dune#10623, @voodoos)

• Don't depend on coq-stdlib being installed when expanding variables
  of the coq.version family ([coq] make expand "coq.version" and co not depend on coq-stdlib dune#10631, fixes [coq] expand coq.version & co without using coq-lib dune#10629, @gares)

• Error out if no files are found when using copy_files. (copy_files: error out if no files found dune#10649, @jchavarri)

• Re_export dune-section private library in the dune-site library stanza,
  in order to avoid failure when generating and building sites modules
  with implicit_transitive_deps = false. (Fix generating sites modules failure when implicit_transitive_deps set to false dune#10650, fixes Modules generated for sites use an implicit transitive dep dune#9661, @MA0100)

• Expect test fixes: support multiple modes and fix dependencies when there is
  a custom runner (Expect test fixes dune#10671, @vouillon)

• In a (library) stanza with (extra_objects) and (foreign_stubs), avoid
  double linking the extra object files in the final executable.
  ((library (extra_objects)): avoid double linking dune#10783, fixes Error building library with indirect dependency on object file dune#10785, @nojb)

• Map (re_export) library dependencies to the exports field in META files,
  and vice-versa. This field was proposed in to
  https://discuss.ocaml.org/t/proposal-a-new-exports-field-in-findlib-meta-files/13947.
  The field is included in Dune-generated META files only when the Dune lang
  version is >= 3.17.
  (Map (re_export) to exports field in META files dune#10831, fixes Map (re_export) to exports field in META files dune#10830, @nojb)

• Fix staged pps preprocessors on Windows (which were not working at all
  previously) (Fix staged pps on Windows dune#10869, fixes [windows] staged_pps passes incorrect path separator to cmd.exe dune#10867, @nojb)

• Fix dune describe when an executable is disabled with enabled_if.
  (fix: enabled_if with dune describe dune#10881, fixes dune describe crashing with enabled_if dune#10779, @moyodiallo)

• Fix an issue where C stubs would be rebuilt whenever the stderr of Dune was
  redirected. (Always pass -fdiagnostics-color=always to cc-style compilers to avoid useless recompilations when Dune's stderr is redirected dune#10883, fixes Redirecting the stderr of Dune causes recompilation of C stubs dune#10882, @nojb)

• Format long lists in s-expressions to fill the line instead of formatting
  them in a vertical way (Tweak dune file formatting: avoid pure vertical layout when formatting wrapped lists dune#10892, fixes auto formatting of run shouldn't split its content into one word per line dune#10860, @nojb)

• Fix the URL opened by the command dune ocaml doc. (Fix url opened by "dune ocaml doc" dune#10897, @gridbugs)

• Fix the file referred to in the error/warning message displayed due to the
  dune configuration version not supporting a particular configuration
  stanza in use. (Fix error/warnings for config file dune#10923, @H-ANSEN)

• Fix enabled_if when it uses env variable. (fix: enabled_if with env variable dune#10936, fixes enabled_if field does not support environment variables on executable stanza dune#10905, @moyodiallo)

• Fix exec -w for relative paths with --root argument (Fix exec -w for relative paths with --root argument dune#10982, @gridbugs)

• Do not ignore the (locks ..) field in the test and tests stanza
  (fix: respect (locks ..) in the (tests ..) stanza dune#11081, @rgrinberg)

• Tolerate files without extension when generating merlin rules.
  (fix(merlin): tolerate files without extension dune#11128, @anmonteiro)

Added

• Make Merlin/OCaml-LSP aware of "hidden" dependencies used by
  (implicit_transitive_deps false) via the -H compiler flag. (Use new hidden deps Merlin support for handling implicit-transitive-deps false dune#10535, @voodoos)

• Add support for the -H flag (introduced in OCaml compiler 5.2) in dune
  (requires lang versions 3.17). This adaptation gives
  the correct semantics for (implicit_transitive_deps false).
  (Add support for -H compiler flag dune#10644, fixes Add support for the new -H <dir> argument in OCaml 5.2 dune#9333, dune implicit_transitive_deps false leads to confusing errors ocsigen/tyxml#274, Debugging build failures with implicit_transitive_deps false dune#2733, ignore ppx runtime dependencies when implicit transitive deps = false dune#4963, @MA0100)

• Add support for specifying Gitlab organization repositories in source
  stanzas (Organization In Source Stanza dune#10766, fixes Allow (source (gitlab org/project/repo)) in dune-project dune#6723, @H-ANSEN)

• New option to control jsoo sourcemap generation in env and executable stanza
  (Jsoo: make dune aware of sourcemap generation  dune#10777, fixes Dune does not recognise separate source map files from js_of_ocaml dune#10673, @hhugo)

• One can now control jsoo compilation_mode inside an executable stanza
  (Jsoo: make dune aware of sourcemap generation  dune#10777, fixes Dune does not recognise separate source map files from js_of_ocaml dune#10673, @hhugo)

• Add support for specifying default values of the authors, maintainers, and
  license stanzas of the dune-project file via the dune config file. Default
  values are set using the (project_defaults) stanza (feat: Config defaults for dune-project dune#10835, @H-ANSEN)

• Add names to source tree events in performance traces (perf: add names to source tree events dune#10884, @jchavarri)

• Add codeberg as an option for defining project sources in dune-project
  files. For example, (source (codeberg user/repo)). (Add codeberg Source Kind dune#10904, @nlordell)

• dune runtest can now run individual tests with dune runtest mytest.t
  (Allow runtest to run individual tests dune#11041, @Alizter).

• Wasm_of_ocaml support (Wasm_of_ocaml support dune#11093, @vouillon)

• Add a coqdep_flags field to the coq field of the env stanza, and to the coq.theory stanza, allowing to configure coqdep flags.
  (Add support for coqdep flags. dune#11094, @rlepigre)

Changed

• Remove all remnants of the experimental patch-back-source-tree. (refactor(rules): remove support for patch back into source tree dune#10771,
  @rgrinberg)

• Change the preset value for author and maintainer fields in the
  dune-project file to encourage including emails. (Encourage adding email in author & maintainer info dune#10848, @punchagan)

• Tweak the preset value for tags in the dune-project file to hint at topics
  not having a special meaning. (Subtle hint that topics is not a keyword dune#10849, @punchagan)

• Change some colors to improve readability in light-mode terminals
  (Change colors to be more readable in light themes dune#10890, @gridbugs)

• Forward the linkall flag to jsoo in whole program compilation as well (Pass the linkall flag to jsoo in whole program compilation as well dune#10935, @hhugo)

• Configurator uses pkgconf as pkg-config implementation when available
  and forwards it the target of ocamlc -config. (Configurator: pkg-config plugin uses pkgconf and --personality=TARGET by default dune#10937, @pirbo)

• Enable Dune cache by default. Add a new Dune cache setting
  enabled-except-user-rules, which enables the Dune cache, but excludes
  user-written rules from it. This is a conservative choice that can avoid
  breaking rules whose dependencies are not correctly specified. This is the
  current default. (Dune cache: add enabled-except-user-rules setting dune#10944, Enable dune cache by default dune#10710, @nojb, @ElectreAAS)

• Do not add dune dependency in dune-project when creating projects with
  dune init proj. The Dune dependency is implicitely added when generating
  opam files (fix: Do not depend on dune in dune-project in dune init template dune#11129, @Leonidas-from-XIV)

[ElectreAAS]

The purpose of this draft PR was to do a full CI run to make sure we were not breaking anything that wasn't already broken.
We have identified one such issue and fixed it, and expect to open a non-draft, non-alpha PR today or in the next few days.
This PR can now be closed