Intellij-elixir: Hex issue running Mix ExUnit

[safwank]

I'm trying to get the ExUnit configuration working, but keep getting the following when running it

Could not find Hex, which is needed to build dependency :phoenix

I've tried to run an external tool that does the following before running the tests, to no avail

mix local.hex --force

Ideas?

[KronicDeth]

Did you setup the project using the Import project from external model steps or open it as a simple directory? Opening as a simple directory will often leave the mix path messed up.

[safwank]

I tried both and still got the same result. In the former I even specified an absolute path to mix.

[KronicDeth]

1. OS
2. How you installed Elixir
3. How you installed Erlang
4. How you configured the SDK

[safwank]

OS

Mac OS 10.12.6

How you installed Elixir

asdf (https://github.com/asdf-vm/asdf-elixir)

How you installed Erlang

asdf (https://github.com/asdf-vm/asdf-erlang)

How you configured the SDK

By manually setting the path to ~/.asdf/installs/elixir/1.5.1.

[KronicDeth]

It could be because of asdf. I don't support it explicitly right now (see #308), so it may be that setting the path manually isn't enough to make it work.

[safwank]

That's unfortunate but understandable. I'm guessing this works if Elixir and Erlang are installed via Homebrew?

[KronicDeth]

On Mac there's currently support for Homebrew and Nix: https://github.com/KronicDeth/intellij-elixir/blob/72ba8fab11e905ba53bc97993dcf3a5e60772fad/src/org/elixir_lang/sdk/ElixirSdkType.java#L395-L398

You could also try launching IntelliJ from a terminal where you have the asdf Elixir and Erlang activated, so that the asdf settings are in your environment variables. IntelliJ launched from a terminal (as long as it's not already running) will inherit the environment variables, but it won't when launched from Spotlight, Launchbar or the Applications folder.

[safwank]

You could also try launching IntelliJ from a terminal where you have the asdf Elixir and Erlang activated

Yeah I've tried that but still no dice. I might take a crack at adding asdf support when I get a chance.

Thanks for an awesome plugin!

[timgilbert]

[This is slightly long but I found a workaround at the end there]

Adding a few notes here as I'm seeing the same behavior trying to launch ExUnit.

I've installed elixir via brew install asdf && asdf install elixir 1.5.3 && asdf elixir global 1.5.3 (plus erlang 20.1 the same way) and then set up my SDK in IntelliJ as /usr/local/opt/asdf/installs/elixir/1.5.3. Most things are working really well (code completion, navigation, etc).

The line in the repl I'm seeing is:

/usr/local/Cellar/asdf/0.4.0/installs/erlang/20.1/bin/erl -pa /usr/local/Cellar/asdf/0.4.0/installs/elixir/1.5.3/lib/logger/ebin -pa /usr/local/Cellar/asdf/0.4.0/installs/elixir/1.5.3/lib/elixir/ebin -pa /usr/local/Cellar/asdf/0.4.0/installs/elixir/1.5.3/lib/ex_unit/ebin -pa /usr/local/Cellar/asdf/0.4.0/installs/elixir/1.5.3/lib/mix/ebin -pa /usr/local/Cellar/asdf/0.4.0/installs/elixir/1.5.3/lib/eex/ebin -pa /usr/local/Cellar/asdf/0.4.0/installs/elixir/1.5.3/lib/iex/ebin -noshell -s elixir start_cli -extra /usr/local/opt/asdf/installs/elixir/1.5.3/bin/mix

Executing the above from the command-line followed by hex gives me:

** (Mix) The task "hex" could not be found

But if I just run mix from the elixir dir directly via /usr/local/opt/asdf/installs/elixir/1.5.3/bin/mix hex I see the expected output:

% /usr/local/opt/asdf/installs/elixir/1.5.3/bin/mix hex
Hex v0.17.1
Hex is a package manager for the Erlang ecosystem.
[...]

I can reproduce the REPL behavior by running $(asdf where elixir 1.5.3)/bin/elixir -S mix hex. Therefore it seems as though there's something in the asdf startup scripts which is setting up some variables that aren't in the vanilla script. Poking around, I found that I can get the proper CLI setup to find hex via /usr/local/opt/asdf/libexec/private/asdf-exec elixir bin/elixir -S mix hex.

Looking at that script and running it via sh -x, it looks like the relevant things it does are setting these two environment variables:

export MIX_ARCHIVES=/usr/local/opt/asdf/installs/elixir/1.5.3/.mix/archives
export MIX_HOME=/usr/local/opt/asdf/installs/elixir/1.5.3/.mix

When I I added those two environment variables to my build configuration (Run/Debug configurations / Environment variables), I was able to get the ExUnit tests to launch successfully. 🎉

[KronicDeth]

ASDF support was added ing #1037

[michallepicki]

@timgilbert Thank you, this workaround helped me with running tests using asdf on Ubuntu.

I still have the same problem when trying to run the debugger with the ExUnit configuration:

Could not find Hex, which is needed to build dependency :httpoison

[michallepicki]

I can run the tests in debug mode once I make these environment variables availible any other way (system-wide, or by defining them when running IntelliJ from the terminal)