Bump ppxlib dependency for OCaml 5.4

[dijkstracula]

Hi,

This afternoon I tried bumping my codebase to Ocaml 5.4, but it looks like because ocaml-trace 0.10 pins ppxlib to under 0.36, we are transitively pinned to 5.3.0. The latest version supports 5.4.x releases.

[ERROR] Package conflict!
  * No agreement on the version of ocaml-base-compiler:
    - (invariant) → ocaml-base-compiler >= 5.4.0
    - deps-of-semgrep → ppx_trace >= 0.10 → ppxlib < 0.36 → ocaml < 5.4.0 →
      ocaml-base-compiler < 5.3.1~

A version bump would unblock us experimenting with the latest compiler release.

Thanks for maintaining the project,
Nathan

[c-cube]

Should be fixed on main, could you give it a try before I make a release?

Edit: ah nvm it's not just about bounds, I need to use the new AST. Will try.

[dijkstracula]

Ah I see, sorry that the version bump is non-trivial. (for my part, I have a few other dependencies that I need to get updated, myself, so I can circle back later on when those are ready to try en masse.)

[c-cube]

I'm kind of dreading the move to Exp_function, this new AST is more painful! 😅

[dijkstracula]

oh no, I'm sorry to have opened a can of worms!

[c-cube]

Ahah no worries, I'll just need to look at what other people have done :)