Re: [Caml-list] Opam problem: cannot upgrade yojson

[Jonathan Protzenko <jonathan.protzenko@gmail.com>]

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.

I may have filed a bug about that.

jonathan

On Mon 22 Jul 2013 04:53:31 PM SGT, Alan Schmitt wrote:
> Hello,
>
> I cannot seem to upgrade yojson using opam, because I'm stuck with a
> version I cannot remove:
>
> ,----
> | $ opam info yojson
> |              package: yojson
> |              version: 1.1.3
> |              depends: ocamlfind & cppo & easy-format & biniou <= 1.0.3
> |    installed-version: yojson.1.1.3 [4.00.1]
> |   available-versions: 1.0.3, 1.1.6
> |          description: Yojson is an optimized parsing and printing library for the JSON format
> |
> | It addresses a few shortcomings of json-wheel including 2x speedup,
> | polymorphic variants and optional syntax for tuples and variants.
> |
> | ydump is a pretty-printing command-line program provided with the
> | yojson package.
> |
> | The program atdgen can be used to derive OCaml-JSON serializers and
> | deserializers from type definitions.
> |
> | $ opam remove yojson
> |
> | $ opam info yojson
> |              package: yojson
> |              version: 1.1.3
> |              depends: ocamlfind & cppo & easy-format & biniou <= 1.0.3
> |    installed-version: yojson.1.1.3 [4.00.1]
> | ...
> |
> | $ opam upgrade
> | The following actions will be performed:
> |  - install yojson.1.1.6
> | 1 to install | 0 to reinstall | 0 to upgrade | 0 to downgrade | 0 to remove
> |
> | =-=-= Installing yojson.1.1.6 =-=-=
> | The archive for yojson.1.1.6 is in the local cache.
> | Extracting /Users/schmitta/.opam/archives/yojson.1.1.6+opam.tar.gz.
> | Building yojson.1.1.6:
> |   make
> |   make install
> | The compilation of yojson.1.1.6 failed.
> | Uninstalling yojson.1.1.6:
> |   ocamlfind remove yojson
> |
> |
> | ==== ERROR [while installing yojson.1.1.6] ====
> | # opam-version    1.0.0
> | # os              darwin
> | # command         make install
> | # path            /Users/schmitta/.opam/4.00.1/build/yojson.1.1.6
> | # exit-code       2
> | # env-file        /Users/schmitta/.opam/4.00.1/build/yojson.1.1.6/yojson-ffb3fd.env
> | # stdout-file     /Users/schmitta/.opam/4.00.1/build/yojson.1.1.6/yojson-ffb3fd.out
> | # stderr-file     /Users/schmitta/.opam/4.00.1/build/yojson.1.1.6/yojson-ffb3fd.err
> | ### stdout ###
> | test ! -f ydump || cp ydump /Users/schmitta/.opam/4.00.1/bin/
> | test ! -f ydump.exe || cp ydump.exe /Users/schmitta/.opam/4.00.1/bin/
> | ocamlfind install yojson META \
> |           $(ls yojson.mli yojson_biniou.mli yojson.cmi yojson_biniou.cmi yojson.cmo yojson_biniou.cmo yojson.cmx yojson_biniou.cmx yojson.o yojson_biniou.o)
> | ### stderr ###
> | ocamlfind: Package yojson is already installed
> |  - (file /Users/schmitta/.opam/4.00.1/lib/yojson/META already exists)
> | make: *** [install] Error 2
> |
> | 'opam upgrade' failed.
> `----
>
> Am I doing something wrong here, or is this a bug?
>
> Thanks,
>
> Alan
>