2 packages from ocsigen/lwt at 6.0.0~alpha01

[raphael-proust]

This pull-request concerns:

• lwt.6.0.0~alpha01: Promises and event-driven I/O
• lwt_direct.6.0.0~alpha01: Direct-style control-flow and await for Lwt

---

• Homepage: https://github.com/ocsigen/lwt
• Source repo: git+https://github.com/ocsigen/lwt.git
• Bug tracker: https://github.com/ocsigen/lwt/issues

---

🐫 Pull-request generated by opam-publish v2.5.1

[raphael-proust]

It seems to break lwt_log, which has been deprecated for a while anyway so maybe that's ok, I'll add a constraint

[raphael-proust]

I might have also broken some js uses, need to check if i broke all of them or just some

e.g.,

- (cd _build/default/test/js && /home/opam/.opam/4.14/bin/js_of_ocaml --no-source-map -o main.bc.js /home/opam/.opam/4.14/lib/cstruct/cstruct.js main.bc-for-jsoo)
- Warning [missing-primitive]: There are some missing primitives.
- Dummy implementations (raising 'Failure' exception) will be used if they are not available at runtime.
- You can prevent the generation of dummy implementations with the commandline option '--disable genprim'
- Missing primitives:
-   caml_mutex_lock
-   caml_mutex_new
-   caml_mutex_unlock
-   caml_thread_id
-   caml_thread_initialize
-   caml_thread_self
- File "test/js/dune", lines 3-7, characters 0-90:
- 3 | (rule
- 4 |  (alias runtest)
- 5 |  (package tezt)
- 6 |  (deps main.bc.js)
- 7 |  (action (run node main.bc.js)))
- (cd _build/default/test/js && /usr/bin/node main.bc.js)
- Fatal error: exception Failure("caml_thread_initialize not implemented")
[ERROR] The compilation of tezt.4.0.0 failed at "dune runtest -p tezt -j 71".

[raphael-proust]

A few packages broken by the removal of Lwt_main.*hooks (same that breaks lwt_log). These have been deprecated for a while with an alternative available for a while. So I don't think it's a blocker for an alpha release, but i'll need to ping all the affected packages.

[mseri]

Could you send a PR with the necessary upper bounds?

[mseri]

Suggested change

	"lwt" {<= "5.999"}
	"lwt" {<= "6~"}

This would prevent it and not force a 5 bound

[raphael-proust]

Ok I think it's all done. The CI still fails though. I think that lwt gets pinned which maybe bypasses the version check??

[mseri]

With this fix it should be fine. My only remaining worry is this obscure failure:

#=== ERROR while compiling dune-build-info.3.20.1 =============================#
# context              2.3.0 | linux/x86_64 | ocaml-base-compiler.4.14.2 | file:///home/opam/opam-repository
# path                 ~/.opam/4.14/.opam-switch/build/dune-build-info.3.20.1
# command              ~/.opam/opam-init/hooks/sandbox.sh build dune build -p dune-build-info -j 255 @install
# exit-code            1
# env-file             ~/.opam/log/dune-build-info-7-ba8116.env
# output-file          ~/.opam/log/dune-build-info-7-ba8116.out
### output ###
# Error: /home/opam/.opam/4.14/lib/lwt/dune-package: No such file or directory
# -> required by library "dune_rpc_lwt_tests" in
#    _build/default/otherlibs/dune-rpc-lwt/test

[mseri]

Next time please send the upper bounds separately, it keeps it lighter for the CI and it is easier to review

[raphael-proust]

the dune one seem to have passed now

i'm opening a new PR with only the incompatibilities, I have found new ones :(

[raphael-proust]

#28482 compatibility PR