[ocaml-platform] opam show problem

[Louis Gesbert]

This is indeed unclear, and has been already improved in the 2.0 alpha 
builds: the output is now separated in two sections, showing that the 
details printed are specific to a given version (chosen from installed 
or latest):

     $ opam show lwt

     =-=- lwt: information on all versions 
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
     name                   lwt
     all-installed-versions 2.4.8 [4.02.1 4.01.0+ocp1-20150202]  2.5.2 
[system 4.02.3 4.04]
                            2.6.0 [4.03.0]
     all-versions           2.3.2  2.4.0  2.4.1  2.4.2  2.4.3  2.4.4  
2.4.5  2.4.6  2.4.7  2.4.8
                            2.5.0  2.5.1  2.5.2  2.6.0

     =-=- Version-specific details 
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
     version       2.6.0
     repository    default
     url.src:      https://github.com/ocsigen/lwt/archive/2.6.0.tar.gz
     [etc]

`--where` only show where the metadata was found, it doesn't relate to 
the contents of the package itself. `opam list` is the right tool if you 
want just to check whether the package is installed.

Best,
Louis Gesbert -- OCamlPro

Le 2016-11-21 11:10, Immanuel Litzroth a écrit :
> opam show documentation says:
> "
> 
>    The information block consists of the name of the package, the
>        installed version if this package is installed in the currently
> 
>        selected compiler,.."
> 
> I have a switch BUILDSYSTEM that does not contain lwt.
> 1) it's not under ~/.opam/BUILDSYSTEM/lib
> 2) linking with the package lwt in this switch does not work.
> Still "opam show lwt" does give me a version as in it's output:
>>>> 
> 
> opam show lwt
>              package: lwt
>              version: 2.6.0
> ...
>>>> 
> ocaml show where lwt does show this:
>>>> 
> 
> opam show --where lwt
> /home/immanuel/.opam/repo/default/packages/lwt/lwt.2.6.0/opam
>>>> 
> I do have it installed in other switches.
> 
> Are my expectations wrong, or is this a bug?
> Thanks in advance,
> Immanuel
> 
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