Where does the `priv` directory belong in mix umbrella projects

Question

As I understand it any artifact that is needed in a release should be put in a priv directory. In the case of an umbrella project should there be a single priv directory at the umbrella level or one for each app?

Also how do you look up the pathname for the priv directory?

Answer 1

priv directory is part of an OTP application layout. Since an umbrella in itself is not an OTP application it doesn't have the priv directory - the actual applications do, so each one gets it's own priv.

You can access files in the priv directory using:

Application.app_dir(:app_name, "priv/path/to/file")