OCaml 4.03 compatibility

[hcarty]

The ppx extension doesn't compile with 4.03.0+beta1.

[Drup]

I have a patch here: https://github.com/ocsigen/lwt/tree/4.03.0
You need the dev version of ppx_tools.

[hcarty]

Trying to opam pin add lwt -kgit https://github.com/ocsigen/lwt.git#4.03.0 gave me this error:

# File "myocamlbuild.ml", line 767, characters 69-98:
# Error: This expression has type Ocamlbuild_plugin.Pathname.t lazy_t
#        but an expression was expected of type string
# Command exited with code 2.

[hcarty]

Looks like that may be an oasis issue...

[dbuenzli]

Would it be please possible to fix this so that we can test 4.03 well ? This is unfortunately a prequisite of utop and some people tricked me into using it.

[bikallem]

I want to second @dbuenzli . I am using 4.03 beta and am unable to use utop since it has requirements on lwt.

[vasilisp]

@Drup has a workaround for the OASIS issue: https://github.com/Drup/lwt/tree/4.03.0-no-oasis . You can pin that.

@Drup, we now have ppx_tools for 4.03, so I guess we should merge your PPX fix. Hopefully the OASIS issue will get fixed in OASIS.

[Drup]

Sorry everyone, I did this some time ago and forgot to follow on. This is now done in #227

As @vasilisp said, while waiting for a fix on oasis or an lwt release, please use my version with oasis already generated.

opam pin add lwt https://github.com/Drup/lwt.git#4.03.0-no-oasis

[bikallem]

@Drup still failing on 4.03.0+beta1+flambda. Error below.

gcc: error: src/unix/jobs-unix/lwt_unix_job_truncate.o: No such file or director

[Drup]

@neolem I just tried on flambda, I can't reproduce, everything compiles fine.

[bikallem]

@Drup It installs okay now after removing and re-adding the 4.03.0+beta1+flambda. Thanks.

[avsm]

Any ETA on an Lwt release with this fix in? 4.03 is around the corner.

[whitequark]

4.03 is released and lwt is still broken...

[Drup]

@whitequark lwt.2.5.2 is released too, and it's 4.03-compatible.