Re: [MirageOS-devel] [opam-devel] 'provides' field design proposal

[Anil Madhavapeddy <anil@xxxxxxxxxx>]

Looks great, Louis!  My immediate thoughts:

- This does have the potential to complicating pinning quite a lot, which
 needs to be balanced against the better upgrade messages.  Do you think 
 this will need a package selection priority the way that apt-pinning in
 Debian works (e.g. so that ocaml-tls can be selected ahead of openssl-tls
 for the TLS package).

- The forking and providing replacements would be really useful for Mirage,
 where we're having an active discussion about how to provide Xen-specific
 versions of certain packages such as Zarith.  Thomas (with any surname),
 opinions on this?

- How much damage will this do to the internal solver heuristics?

-anil

> On 5 Jan 2015, at 08:36, Louis Gesbert <louis.gesbert@xxxxxxxxxxxx> wrote:
> 
> Hi all, and happy new year !
> 
> I just added to opam a design proposal to open discussion on the 
> implementation of the 'provides' field and its use-cases.
> 
> It's at https://github.com/ocaml/opam/blob/master/doc/design/provides.md
> 
> Cheers,
> Louis
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