I’m new to Elixir and Phoenix. After reading “Programming Phoenix” I created an umbrella app for a new Phoenix project. I have a child app for my contexts and database related stuff (let’s call it “project”) and another child app for the web-facing stuff (let’s call it “project_web”).
After working with it for a while I noticed that it doesn’t seem to matter in which of the mix.exs files I add my dependencies. For example I accidentally added a dependency that code in “project_web” depends on to the mix.exs file for “project” and still everything worked as expected.
This leads me to my question: Does it matter where I specify my dependencies? What are the best practices around this? I assume that it starts to matter if I want to deploy the child apps separately. Is there a way to enforce the “correct” location (i.e. force me to specify dependencies in the child app that actually needs them)?
