mix - Alias to run multiple tasks from different environments

[dylan-chong]

Precheck

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• Finally, be nice and have fun!

Environment

• Elixir & Erlang versions (elixir --version):

Erlang/OTP 20 [erts-9.2] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:10] [hipe] [kernel-poll:false] [dtrace]

Elixir 1.5.3

• Operating system: mac 10.13.2

Current behavior

In my mix.exs :

  defp aliases do
    [
      check: [
        "dialyzer",
        "credo",
        "test",
      ],
    ]
  end

Running mix check from the command line yields ** (Mix) "mix test" is running on environment "dev". If you are running tests along another task, please set MIX_ENV explicitly (this error is silently suppressed if "test" is the last task in the list, so you have to move to the top of the list to see this error).

However, running MIX_ENV=test mix check yields ** (Mix) The task "dialyzer" could not be found. Presumably the dialyzer task is not in the test environment, only dev.

Expected behavior

Firstly, the error above should not be silently suppressed if the task is the last on the list.

There should be some way to run multiple tasks from multiple environments together. Or maybe not? The alternative could just be to write a bash script?

[josevalim]

Can you please provide a minimal mix.exs that reproduces the error? We cant run multiple environments in the same Mix command because apps may have already been booted with different settings. You can add dialyzer to the test environment though. -- *José Valimwww.plataformatec.com.br <http://www.plataformatec.com.br/>Founder and Director of R&D*

[dylan-chong]

Can you please provide a minimal mix.exs that reproduces the error?

Sure https://github.com/dylan-chong/elixir_environment_error_test

I put 2 different tasks there with different orderings of the tasks - check1, check2

You can add dialyzer to
the test environment though.

Good idea!

[josevalim]

I am getting the proper error in both tasks:

~/OSS/elixir_environment_error_test[master]$ mix check1
** (Mix) "mix test" is running on environment "dev". If you are running tests along another task, please set MIX_ENV explicitly
~/OSS/elixir_environment_error_test[master]$ mix check2
Checking PLT...
[:compiler, :elixir, :kernel, :logger, :stdlib]
PLT is up to date!
Starting Dialyzer
dialyzer args: [
  check_plt: false,
  init_plt: '/Users/jose/OSS/elixir_environment_error_test/_build/dev/dialyxir_erlang-20.0_elixir-1.7.0-dev_deps-dev.plt',
  files_rec: ['/Users/jose/OSS/elixir_environment_error_test/_build/dev/lib/elixir_environment_error_test/ebin'],
  warnings: [:unknown]
]
done in 0m1.27s
done (passed successfully)
Checking 1 source file ...

Please report incorrect results: https://github.com/rrrene/credo/issues

Analysis took 0.03 seconds (0.00s to load, 0.03s running checks)
2 mods/funs, found no issues.

Use `--strict` to show all issues, `--help` for options.
** (Mix) "mix test" is running on environment "dev". If you are running tests along another task, please set MIX_ENV explicitly

Please let us know if there is anything else to reproduce this issue. Thank you!

[bartoszgorka]

@dylan-chong Hi.
I prepared for my project alias to check dynamic code.

mix.exs

defp deps do
    [
      {:credo, "~> 0.8", only: [:dev, :test], runtime: false},
      {:dialyxir, "~> 0.5", only: [:dev, :test], runtime: false},
      {:excoveralls, "~> 0.7", only: [:dev, :test], runtime: false},
    ]
  end

  defp aliases do
    [
      "credo": ["credo --strict"],
      "coveralls": ["coveralls --umbrella"],
      "coveralls.detail": ["coveralls.detail --umbrella"],
      "full_check": ["credo", "dialyzer", "test --listen-on-stdin --stale"],
      "check": ["credo", "test --listen-on-stdin --stale"],
    ]
  end

  defp dialyzer do
    [
      flags: [:error_handling, :race_conditions, :underspecs, :unmatched_returns],
      plt_add_apps: [:ex_unit, :mix],
    ]
  end

Remember about add dialyzer also do :test env.
Commit in my repo

[dylan-chong]

@josevalim Strange, the error messages a showing today for me as well. Not sure what changed since yesterday. I'll reopen this issue if there is a more reliable way to replicate the issue

@bartoszgorka Yes adding dialyser to the test environment works for me