[new release] eio (5 packages) (1.2)

[talex5]

Effect-based direct-style IO API for OCaml

• Project page: https://github.com/ocaml-multicore/eio
• Documentation: https://ocaml-multicore.github.io/eio/

CHANGES:

Changes:

• Make fork_action.h a public header (@patricoferris Make fork_action.h a public_header ocaml-multicore/eio#769, reviewed by @talex5).
  Allows other libraries to add new actions.

• Record trace event when spawning processes (@talex5 Record trace event when spawning processes ocaml-multicore/eio#749).
  Spawning a subprocess can take a long time in some cases, so show it clearly in the traces.

• Eio_unix.Net: make some return types more polymorphic (@talex5 Eio_unix.Net: make some return types more polymorphic ocaml-multicore/eio#744).

Bug fixes:

• Preserve backtraces in fork_daemon (@talex5 Preserve backtraces in fork_daemon and fork_promise_exn ocaml-multicore/eio#779).

• Eio.Path: always use "/" as separator (@talex5 Eio.Path: always use "/" as separator ocaml-multicore/eio#743).

Linux backend:

• Allow alloc_fixed_or_wait to be cancelled (@talex5 eio_linux: allow alloc_fixed_or_wait to be cancelled ocaml-multicore/eio#753).

• Avoid triggering a (harmless) TSan warning (@talex5 eio_linux: avoid triggering a TSan warning ocaml-multicore/eio#754, reported by @avsm).

Windows backend:

• Unregister FDs on cancel (@talex5 eio_windows: unregister FDs on cancel ocaml-multicore/eio#756).
  Fixes exception Unix.Unix_error(Unix.ENOTSOCK, "select", "").

• Work around problems in Unix.getaddrinfo (@talex5 eio_windows: work around problems in Unix.getaddrinfo ocaml-multicore/eio#780).
  Fixes e.g. No addresses found for host name "127.0.0.1".

• Group ECONNABORTED with other connection reset errors (@talex5 eio_windows: group ECONNABORTED with other connection reset errors ocaml-multicore/eio#783).

• Check has_symlink for tests (@create2000 fix: test_symlink ocaml-multicore/eio#771, reviewed by @patricoferris and @talex5).

• Improve openat error handling (@talex5 eio_windows: improve openat error handling ocaml-multicore/eio#742, reported by @kentookura).
  Fixes exception Unix.Unix_error(Unix.ENOENT, "openat", "").

Documentation:

• examples/fs: show how to read files while scanning (@talex5 examples/fs: show how to read files while scanning ocaml-multicore/eio#745).

• Add example to Buf_read.seq documentation (@talex5 Add example to Buf_read.seq documentation ocaml-multicore/eio#739, requested by @darrenldl and @rizo).

Build and test:

• Fix tests on OpenBSD (@talex5 Fix tests on OpenBSD ocaml-multicore/eio#782).

• Add advice about using AI for code generation (@patricoferris Add advice about using AI for code generation ocaml-multicore/eio#765, reviewed by @avsm and @talex5).

• Minor code cleanups (@talex5 Minor code cleanups ocaml-multicore/eio#755).

• Define struct clone_args for linux-lts versions that don't have it (@copy define struct clone_args for linux-lts versions that don't have it ocaml-multicore/eio#741, reviewed by @talex5).

• eio_linux: refactor fixed buffer code (@talex5 eio_linux: refactor fixed buffer code ocaml-multicore/eio#752).

[talex5]

Summary of CI failures:

• riscv64-ocaml-5.2: eio_linux couldn't be tested because the host kernel is too old to support uring. This isn't a serious problem, because eio_main will fall back to using eio_posix in this case, though it might be good to update the machine.
• opam-2.0-ocaml-5.2: conf-pkg-config.3 failed to build for some reason.
• Windows CI: eio_posix couldn't be tested because iomux failed to install. This isn't much of a problem, as Windows users will generally use eio_windows instead.

So, looks OK to merge to me.

(note: opam-ci reports "3 jobs failed", but I only see 2 failures there)

[avsm]

Thanks! You may want to announce this on https://discuss.ocaml.org, where we have a Community category and an announce tag for this purpose.