On Wed, Feb 3, 2016 at 7:20 PM, ygrek <ygrek@autistici.org> wrote:

> I wonder if keeping empty sexplib.syntax subpackage with only
> requires="pa_sexp_conv" line
> will prevent build breakage (one will only need to fix opam dependencies)?
>

​That would work for now. However, sooner or latter some change in​

​sexplib will break the code generated by pa_sexp_conv and we'll have the
same problem again.
The current forced upgrade is simple (one sed command [1]) ​and it's a hint
that it's a good time to switch to ppx. We published a tool to help with
this BTW [2]

 [1] https://github.com/ocaml/opam-repository/blob/master/CHANGES.md
 ​[2] ​
https://blogs.janestreet.com/converting-a-code-base-from-camlp4-to-ppx
​      ​
https://github.com/janestreet/camlp4-to-ppx

-- 
Jeremie