[rust-dev] Deprecating rustpkg

Daniel Micay danielmicay at gmail.com
Fri Jan 31 15:07:56 PST 2014

On Fri, Jan 31, 2014 at 6:03 PM, Tony Arcieri <bascule at gmail.com> wrote:
> On Fri, Jan 31, 2014 at 2:59 PM, Strahinja Markovic <val at markovic.io> wrote:
>> This is exactly the system I was referring to. Rust makes it easy to have
>> multiple versions of a library linked into a single binary. If the libraries
>> you depend on all ask for the latest (or unspecified) version of a library,
>> you pull in the latest. If they ask for a specific version, you link that in
>> as well.
>> The package manager should make this more granular as well; instead of
>> offering "latest" and "exact version", you specify depending on libfoo with
>> "latest", "1.2.3", "1.2.x", "1.x" etc. If the constraint is "1.x", you pick
>> the latest version that's still 1.x.
>> And then you link in all the libs that are necessary to satisfy the
>> various constraints, you don't look for the One True Version that satisfies
>> all of your deps.
> I am 100% clear that, from a technical perspective, Rust has the ability to
> support multiple different versions of the same library simultaneously.
> However:
> 1) Is this a good idea?
> 2) Is this compatible with the idea of toposort-style dependency resolution?
> Can anyone point to a real-world example of a dependency resolver which can
> produce solutions which may-or-may-not contain multiple versions of the same
> library?
> --
> Tony Arcieri


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