[Haskell-cafe] Stack transitive dependencies

[Corentin Dupont]

Thanks for the explanation!

On Thu, Aug 27, 2015 at 11:36 AM, Michael Snoyman <michael at snoyman.com>
wrote:

> Currently, stack doesn't do any importing of settings between stack.yaml
> files, so the contents of bar's extra-deps are irrelevant. stack is just
> looking at bar's cabal file, detecting that it needs another package as a
> dependency, and suggesting you add it.
>
> There are discussions on the issue tracker about allowing some kind of
> include syntax, but it would still be a separate syntax to what we have
> today, since they're different use cases.
>
> On Wed, Aug 26, 2015, 6:09 PM Corentin Dupont <corentin.dupont at gmail.com>
> wrote:
>
>> Hello,
>> I have a package depending on another:
>>
>> Foo/stack.yaml:
>>
>> flags: {}
>> packages:
>> - '.'
>> - location: ../Bar
>>   extra-dep: true
>> extra-deps:
>> - Bar-0.7.6
>> resolver: lts-2.19
>>
>> When I compile (stack build), I obtain:
>>
>> --  While attempting to add dependency,
>>     Could not find package DebugTraceHelpers in known packages
>>
>> --  Failure when adding dependencies:
>>       DebugTraceHelpers: needed (==0.12.*), but not present in build
>> plan, latest is 0.12
>>     needed for package: Bar-0.7.6
>>
>> I find it strange that it asks for DebugTraceHelpers because it's not a
>> direct dependency of my package, but a dependency of a dependency.
>> It is correctly mentioned in Bar/stack.yml:
>>
>> flags: {}
>> packages:
>> - '.'
>> extra-deps:
>> - DebugTraceHelpers-0.12
>> resolver: lts-2.19
>>
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>>
>
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