Drop ppx_deriving

[ulrikstrid]

ppx_deriving is currently blocking me from compiling a project statically.

Is it used for something other than deriving.eq?

ocaml-ppx/ppx_deriving#212

[paurkedal]

As you could see there isn't much depending on it at the moment, but I'm wondering: Why does using ppx_deriving prevent static compilation? The corresponding runtime library is available as a static library (ppx_deriving_eq.a).

[ulrikstrid]

You can see more info in the linked issue above. But basically the musl compiler can't handle the dynamic loading which you need for the plugin model of ppx_deriving.

[paurkedal]

I see. That's unfortunate, but easy to avoid for now as you can see.