A solution for this could be to do something like:

export MIX_ENV=test
mix deps.get
mix deps.compile
cache_build_artifacts
mix compile
mix test

This should make it possible to cache the dependencies separately from
the application.

2017-12-19 22:28 GMT+01:00  <[email protected]>:
> Ah, so to give some context:
> We have a CI pipeline which pulls the deps, builds the umbrella application
> and then runs our tests.
>
> I would like to cache pulling and buildings the deps, and just build the
> umbrella application. It would save some time off the CI build. We use mix
> to do our compilation, testing and every other command.
>
> On Tuesday, December 19, 2017 at 4:00:10 PM UTC+11, Paul Schoenfelder wrote:
>>
>> Could you clarify what the issue is? You haven't specified under what
>> circumstances caching is a problem or with what tools.
>>
>> Paul
>>
>> On Mon, Dec 18, 2017 at 10:53 PM <[email protected]> wrote:
>>>
>>> The _build folder contains all build artifacts for external dependencies
>>> and internal application code. This means that caching this folder is a
>>> pain.
>>> If I could simply cache the external dependency build artifacts
>>> separately to the internal application artifacts, this would solve my
>>> problem. To do this, I think the artifacts should be kept in a seperate
>>> location such as _build/<env>/deps/...
>>>
>>>
>>>
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