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From: Alan Schmitt <alan.schmitt@polytechnique.org>
To: Jonathan Protzenko <jonathan.protzenko@gmail.com>
Cc: OCaml List <caml-list@inria.fr>
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Date: Mon, 22 Jul 2013 14:16:50 +0200
Message-ID: <m2ppua94ct.fsf@polytechnique.org>
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Subject: Re: [Caml-list] Opam problem: cannot upgrade yojson

jonathan.protzenko@gmail.com writes:

> I've had the same error on two different computers, removing yojson 
> from ~/.opam/<your-version>/installed.roots and manually doing 
> ocamlfind remove yojson fixed it.

Thanks, I had to remove it from "installed" as well, and I was able to
install the more recent version.

Alan