[new release] dune (15 packages) (3.18.0)

[maiste]

Fast, portable, and opinionated build system

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

CHANGES:

Fixed

• Support HaikuOS: don't call execve since it's not allowed if other pthreads
  have been created. The fact that Haiku can't call execve from other threads
  than the principal thread of a process (a team in haiku jargon), is a
  discrepancy to POSIX and hence there is a bug about
  it. (@Sylvain78, fix(haiku): execve not allowed if other pthreads have already been created dune#10953)
• Fix flag ordering in generated Merlin configurations (Preserve flags ordering in Merlin configuration files. dune#11503, @voodoos, fixes
  Modules opened in the wrong order? merlin#1900, reported by @vouillon)

Added

• Add (format-dune-file <src> <dst>) action. It provides a replacement to
  dune format-dune-file command. (Add (format-dune-file) action dune#11166, @nojb)
• Allow the --prefix flag when configuring dune with ocaml configure.ml.
  This allows to set the prefix just like $ dune install --prefix. (feature: add --prefix to configure script dune#11172,
  @rgrinberg)
• Allow arguments starting with + in preprocessing definitions (starting with
  (lang dune 3.18)). (@amonteiro, feat(dune): support + prefixes for PPX CLI flags  dune#11234)
• Support for opam (maintenance_intent ...) in dune-project (Add support for x-maintenance-intent in dune-project dune#11274, @art-w)
• Validate opam maintenance_intent (Validate maintenance_intent dune#11308, @art-w)
• Support not in package dependencies constraints (Support not in package dependencies constraints dune#11404, @art-w, reported
  by @hannesm)

Changed

• Warn when failing to discover root due to reads failing. The previous
  behavior was to abort. (@KoviRobi, Stop VCS discovery choking on unreadable root dune#11173)
• Use shorter path for inline-tests artifacts. (@hhugo, Shorter path for inline-tests dune#11307)
• Allow dash in dune init project name (Allow dash in dune init project name dune#11402, @art-w, reported by @saroupille)
• On Windows, under heavy load, file delete operations can sometimes fail due to
  AV programs, etc. Guard against it by retrying the operation up to 30x with a
  1s waiting gap (Windows: retry a file remove - a virus checker might lock files dune#11437, fixes Sandboxing on Windows does not work in presence of a virus scanner dune#11425, @MSoegtropIMC)
• Cache: we now only store the executable permission bit for files (Cache: only store executable permission bit dune#11541,
  fixes cache: some permissions can't be represented, causing cache misses dune#11533, @ElectreAAS)
• Display negative error codes on Windows in hex which is the more customary
  way to display NTSTATUS codes (Display Windows NTSTATUS exit codes in hex dune#11504, @MisterDA)

[maiste]

Official release following #27696. The CI should be OK because this is the same version as the alpha0 with naming changed to 3.18.0 instead of 3.18.0~alpha0

[shonfeder]

Thank you for publishing the update and for the careful work evaluating the CI. All looks good here to me as well!