Create a configuration to define elixir's source path

[msaraiva]

Discussion here.

[msaraiva]

Also print a better message than "Can't find TheModule"

[insiderq]

Do not see any disadvantages for that. In addition it seems to me that along with language growth more and more developers will install binaries.

[matteosister]

just to inform everyone landing here, for me there was two problems:

• I'm using asdf to manage the versions of elixir and erlang, the binary is in my classpath, but for some reason I have to symlink elixir and erl executables in my /usr/local/bin folder to make it work.
• If the project is compiled inside a container, it has the wrong path of the file, so I think that go to definition could not work. If I compile the file from the host machine everything works as expected.

So, as far as I know, if you are using docker there is nothing you can do to make go to definition work.

[iJackUA]

Hi everyone, I have started investigation about Go to Definition for VSCode Elixir plugin, but would like to see if in Atom community resolution would go faster :)

Confirm what @matteosister says about compiling sources inside Docker. I have even prepeared a small proof of concept repo with steps to reproduce in readme https://github.com/iJackUA/vscode-elixir-docker-test (sorry for the repo name, it is not only for vscode :) )

I think the solution is to have a special Workspace/Project scope setting variable to specify path mapping. I've succeeded to quick-fix this issue in vscode that uses Alchemist server as easy as that - just add String replace for source file

https://github.com/fr1zle/vscode-elixir/blob/bffea3539ccfd605dfc62729551d86fd886ba153/alchemist-server/lib/api/defl.exs#L118

      case module.module_info(:compile)[:source]  do
        nil    -> nil
        source -> List.to_string(source) |> String.replace("/www", "/Users/ievgen/Projects/Elixir/vscode-elixir-docker-test/")
      end

It look slike Atom elixir uses the same method (module_info) to get source file https://github.com/msaraiva/atom-elixir/blob/27582d5bcb86502366447e146151d1f5bdfceaef/lib/elixir_sense/lib/elixir_sense/providers/definition.ex#L38

@msaraiva what do you think? Is it possible to have such kind of option to manually specify what path to (in my example it is /www) to map to current project folder? I see that Atom does not have such concept as Project or Local workspace settings, but maybe at least to have an ability to put optional (!) .atom-elixir.json config file in root project folder with extension settings?