Can't build from scratch or run tests

[topfunky]

Running mix test fails even after installing test dependencies with MIX_ENV=dev mix deps.get.

It appears that some of these don't generate the expected .app that matches the package name. Is there a way around this?

Unchecked dependencies for environment dev:
* exreloader [git: "https://github.com/yrashk/exreloader.git"]
  could not find app file at deps/exreloader/ebin/exreloader.app
* proper [git: "https://github.com/manopapad/proper.git"]
  could not find app file at deps/proper/ebin/proper.app
* bcrypt [git: "https://github.com/spawngrid/erlang-bcrypt.git"]
  could not find app file at deps/bcrypt/ebin/bcrypt.app