Bug#802919: unison: synchronization incompatibility when built with Ocaml versions pre/post-4.02

[Niels Elgaard Larsen <elgaard@agol.dk>]

On Thu, 24 Mar 2016 14:14:21 +0100 Baptiste Jonglez 
<baptiste@bitsofnetworks.org> wrote:
> As a side note, the current state of unison/ocaml on stretch is confusing:
> ocaml 4.02.3 is in stretch, but the unison binary package still seems to
> be built against ocaml 4.01.  This is non-obvious and I spent quite some
> time wondering why unison from stretch did not interoperate with another
> unison client built against ocaml 4.02.



So did I. When I figured out, I just had to build unison from source and 
everything worked again.

At least "unison -version" should tell which version of ocaml it uses.