Add ctypes 0.22.0

[yallop]

No description provided.

[mseri]

There are lots of failures of the form

(failed: Library "ctypes.foreign" not found.)

is there a change that made these appeari with this release?

[yallop]

Ah, we also need a new corresponding release of ctypes-foreign 0.22.0 (which I've just pushed in 6d72e1f), since the relationship between the two packages changed in the last release (#24101).

[raphael-proust]

The CI looks better although I don't understand some of the issues and so I can't tell for sure if they are from ctypes or from the revdeps being broken. I can tell that:

• ppx_rapper seems broken (some expect test is failing) (ping @roddyyaga )
• srt seems broken (missing dependency to ocamlfind?) (ping @toots )

[mseri]

I think they are both unrelated. For the first I don't think we can do anything (and seems to have to do more with ppx/ppxlib) and the latter is indeed likely a missing dependency that perhaps was transitive before (I'll send a PR to fix it)

[mseri]

I am more worried about macos failures:

# File "tests/test-callback_lifetime/dune", line 2, characters 7-29:
# 2 |  (name test_callback_lifetime)
#            ^^^^^^^^^^^^^^^^^^^^^^
# (cd _build/default/tests/test-callback_lifetime && ./test_callback_lifetime.exe)
# ..EE..
# ==============================================================================
# Error: Callback lifetime tests:3:calling expired closures (stubs).
# 
# File "/Users/mac1000/.opam/5.1.1/.opam-switch/build/ctypes-foreign.0.22.0/_build/default/tests/test-callback_lifetime/oUnit-Callback lifetime tests-m1-worker-01#00.log", line 55, characters 1-1:
# Error: Callback lifetime tests:3:calling expired closures (stubs) (in the log).
# 
# Worker stops running: Killed by signal -10
# ------------------------------------------------------------------------------
# ==============================================================================
# Error: Callback lifetime tests:2:calling expired closures (foreign).
# 
# File "/Users/mac1000/.opam/5.1.1/.opam-switch/build/ctypes-foreign.0.22.0/_build/default/tests/test-callback_lifetime/oUnit-Callback lifetime tests-m1-worker-01#00.log", line 51, characters 1-1:
# Error: Callback lifetime tests:2:calling expired closures (foreign) (in the log).
# 
# Worker stops running: Killed by signal -10
# ------------------------------------------------------------------------------
# Ran: 6 tests in: 1.36 seconds.
# FAILED: Cases: 6 Tried: 6 Errors: 2 Failures: 0 Skip:  0 Todo: 0 Timeouts: 0.

Are those known/expected?

[yallop]

The test_callback_lifetime failure on macOS is (unfortunately) a known issue: yallop/ocaml-ctypes#730

[toots]

Glad to see that ctypes is being migrated to dune! I believe srt should be fine with a dependency on ocamlfind indeed. I have added it to the upstream repository so it'll be there for the next release.