On Fri, Oct 30, 2015 at 11:14 AM, Yichao Yu <yyc1...@gmail.com> wrote:
> On Fri, Oct 30, 2015 at 11:05 AM, Tom Breloff <t...@breloff.com> wrote:
>> Thanks... after reading through that again, let me adjust my scenario:
>>
>> Package A's require:
>>
>> julia 0.4
>> C 0.1 0.2-
>>
>> Package B's require:
>>
>> julia 0.4
>> C 0.3
>>
>> What version of C is installed? Package A want any version 0.1.x, Package B
>> wants any version 0.3.x or greater. Who "wins"?
Or fallback to an older version of one of them that don't conflict.
>
> I'd be surprised if you don't get an error.
>
>>
>> On Fri, Oct 30, 2015 at 10:28 AM, Yichao Yu <yyc1...@gmail.com> wrote:
>>>
>>> On Fri, Oct 30, 2015 at 10:18 AM, Tom Breloff <t...@breloff.com> wrote:
>>> > I'm very confused about how Pkg resolution works in 0.4, and I couldn't
>>> > find
>>> > a definitive source of details. If package A has the REQUIRE file:
>>> >
>>> > julia 0.4
>>> > C 0.1
>>> >
>>>
>>> This means version 0.1 or higher for C
>>>
>>> >
>>> > and package B has the REQUIRE file:
>>> >
>>> > julia 0.4
>>> > C 0.2
>>> >
>>>
>>> This means version 0.2 or higher for C
>>>
>>> >
>>> > which version of C is installed? Does it change if you do a
>>> > Pkg.add("C")?
>>> > What determines which package "wins"?
>>>
>>> The latest available that is compatible with everything else.
>>>
>>> Note to specify the upper bound, use `C lower_version upper_version`
>>>
>>> >
>>> > Bonus question: can someone point me to documentation on exactly what
>>> > the
>>> > plus/minus mean? What's the difference between `0.1`, `0.1-`, and
>>> > `0.1+`?
>>>
>>> - and + are for prerelease and build
>>>
>>> ```
>>> julia> v"0.1-2+3".prerelease
>>> (2,)
>>>
>>> julia> v"0.1-2+3".build
>>> (3,)
>>> ```
>>>
>>> >
>>> > Bonus question: how does the logic change with the new package manager?
>>> > (if
>>> > at all)
>>>
>>> nothing
>>>
>>> >
>>> > Bonus question: is there an open issue/PR that discusses potential
>>> > future
>>> > changes to METADATA and package management?
>>> >
>>> > Thanks!
>>>
>>> Ref
>>> http://julia.readthedocs.org/en/latest/manual/packages/#require-speaks-for-itself
>>
>>
