Also, if you already have started the project as umbrella without the web piece, you can use mix phx.new.web generator inside apps to create the web layer using Phoenix. The generator will identify the umbrella project and will remove everything you don’t need in the web app.

Looking at your structure, I guess You use mix new … --umbrella, then go to apps and build phoenix app.

But there is also another way of doing this

mix phx.new hull_cinema_club --umbrella

After, You build the movie_importer, You will get this structure

hull_cinema_club_umbrella
  | apps
    | movie_importer
    | hull_cinema_club
    | hull_cinema_club_web

WIth hull_cinema_club acting as core. I tend to prefer this, as it simplify struct a little bit, as there is no need to build phoenix_app and hcc_core by hand. And also, the web part is configured only for web. While the core is the db part.

Also configuring tests is automatic, while in your case, You will need to make it by hand.

It’s just a matter of taste, I used the same structure as yours before…

Thanks for the advice - I hadn’t thought to create the umbrella project using phoenix but I can definitely see how that makes things tidier. Also good to know that I’m not completely on the wrong track.