Questions & Help>Questions

Running one .exs file from another

#mix#exs
fireproofsocks

fireproofsocks

How can you run a .exs file from another .exs file? My inspiration comes from the basic config.exs file which runs another .exs via import_config "#{Mix.env()}.exs". I’d like to do the same type of thing, but not with just config files.

Would something like Mix.Tasks.Run.run(["path/to/my.exs"]) work in an umbrella? How does Mix know which directory is the base directory?

Thanks for any pointers!

9 comments
#mix#exs
5194 9

Marked As Solved

ericmj

ericmj

Elixir Core Team

You can’t call mix functions at runtime because they are not available in your release. You need to evaluate Mix.env() at compile time, module attributes can help you do that:

@env Mix.env()

def foo do
  Application.app_dir(:myapp, "priv/repo/#{@env}.exs")
  |> Code.require_file() 
end
2
Post #7

Also Liked

josevalim

josevalim

Creator of Elixir
4
Post #1
josevalim

josevalim

Creator of Elixir

Use Application.app_dir to build the path within a certain app.

1
Post #4
joaoevangelista

joaoevangelista

You can use Application.app_dir/2 to fetch the file that lies inside the application folder like that:

 Application.app_dir(:myapp, ["priv/repo", "#{Mix.env()}.exs"])
 |> Code.require_file()

The second argument will join the parts of the path and return a String

1
Post #5

Last Post!

c4710n

c4710n

Code.eval_file/2 works, too.

0
Post #9

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