Run mix task for selected application(s) only in umbrella project

[Hubert Łępicki]

Hey, so I have an umbrella app, that has 3 apps in it. apps/a, apps/b and apps/c, with their names :a, :b, and :c. There are some deps between the apps but I have dealt with that.

Currently I can either run the mix task from the umbrella root, and it's being run recursively. Or I can cd to one of the app directories and run the task from within.

There is a slight drawback, however, to the 2nd approach: the task I run from within apps/a directory triggers the app in subdirectory to be recompiled, which slightly annoys me every time. 

Is there a way to specify which apps I want to run the task in, without changing working directory to the apps/a or apps/b directory first?

[José Valim]

> There is a slight drawback, however, to the 2nd approach: the task I run from within apps/a directory triggers the app in subdirectory to be recompiled, which slightly annoys me every time. 

I am a bit confused. If the app in subdirectory is being recompiled, it is because it must be recompiled. Unless the issue is that it is being compiled multiple times OR it is recompiling :c, that none of :a or :b depend on.

José Valim

www.plataformatec.com.br

Skype: jv.ptec

Founder and Director of R&D

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[hubert....@amberbit.com]

Then maybe there is something wrong with my set up of umbrella project. Look at this:

➜  foo git:(master) mix phoenix.server

[info] Running FooAdmin.Endpoint with Cowboy using http://localhost:5000

[...]

➜  cd apps/bar

➜  bar git:(master) mix phoenix.server

Unchecked dependencies for environment dev:

* bankster (Hex package)

  the dependency is not available, run "mix deps.get"

* quantum (Hex package)

  the dependency is not available, run "mix deps.get"

** (Mix) Can't continue due to errors on dependencies

➜  bar git:(master) mix deps.get

Running dependency resolution

* Getting bankster (Hex package)

  Checking package (https://repo.hex.pm/tarballs/bankster-0.2.2.tar)

  Using locally cached package

* Getting quantum (Hex package)

  Checking package (https://repo.hex.pm/tarballs/quantum-1.7.1.tar)

  Using locally cached package

* Getting timex (Hex package)

  Checking package (https://repo.hex.pm/tarballs/timex-2.1.4.tar)

  Using locally cached package

* Getting tzdata (Hex package)

  Checking package (https://repo.hex.pm/tarballs/tzdata-0.5.7.tar)

  Using locally cached package

* Getting combine (Hex package)

  Checking package (https://repo.hex.pm/tarballs/combine-0.7.0.tar)

  Using locally cached package

➜  bar git:(master) mix phoenix.server

==> idna (compile)

==> bankster

Compiled lib/bankster/bic.ex

Compiled lib/bankster.ex

Compiled lib/bankster/iban.ex

Generated bankster app

[...]

Looks like if I aim in foo/apps/bar, the project is recompiled to local _build directory. While I am in umbrella root, it is recompiled to _build directory over there.

Analogous situation is with deps, they need to be fetched again when I cd to foo/apps/bar from umbrella root.

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Hubert Łępicki
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[hubert....@amberbit.com]

OK, I found it.

I did not have the proper paths specified in local mix.exs files in subdirectories. Those things help:

     build_path: "../../_build",
     config_path: "../../config/config.exs",
     deps_path: "../../deps",
     lockfile: "../../mix.lock",


The original question remains: can I do run task for specific app from umbrella root?

[José Valim]

That sounds like it. Can you please post all 4 mix.exs files in a gist (including the umbrella root one)? I am suspecting they are using different style of configs.

José Valim

www.plataformatec.com.br

Skype: jv.ptec

Founder and Director of R&D

On Mon, Jun 20, 2016 at 5:38 PM, hubert....@amberbit.com <hubert....@amberbit.com> wrote:

To view this discussion on the web visit https://groups.google.com/d/msgid/elixir-lang-talk/CABD6TNZ6ZT6fpdScnwx-%2BgC3_YsxFJBtpWWzCODR2pHVJkrPWA%40mail.gmail.com.

[José Valim]

The original question remains: can I do run task for specific app from umbrella root?

"cd apps/APP && mix TASK" is all we have so far.

[hubert....@amberbit.com]

Alright, thank you so much <3

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