Seems the issue is mis-interpretation of a deprecated constraint. I'm using Jane Street's opam repository [1], which contains constraints like:
available: [ ocaml-version >= "4.03.0" ] After replacing this with a normal constraint in the `depends` field, it worked fine. Is there a tool to convert old opam files? [1] https://github.com/janestreet/opam-repository On Wed, Dec 7, 2016 at 8:04 AM, Ashish Agarwal <agarwal1...@gmail.com> wrote: > I'm getting this: > > $ opam install ppx_sexp_conv.114.10+84 > [ERROR] ppx_sexp_conv.114.10+84 has unmet availability conditions: > ocaml-version >= "4.03.0" > > So opam thinks my ocaml version is < 4.03.0, but I'm in a 4.03.0 switch. > I've certainly run "eval `opam config env`". I created a new switch with > 4.03.0 to try it from scratch, but get the same issue. > > Sanity checks: > > $ ocaml -version > The OCaml toplevel, version 4.03.0 > > $ opam info ocaml | grep all-installed-versions > all-installed-versions 4.03.0 [4.03.0] 4.04.0 [4.04.0] > > Incidentally, I'm confused about the output of `opam info ocaml`. I have 6 > switches on this computer. How come only 2 are listed above? > > $ opam --version > 2.0~alpha5 > >
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