I'm trying to install my own Python application from source, and having a hard time finding resources on how to accomplish it. I'm new to this ecosystem and am probably missing something fundamental.

My recipe is structured like this...and my build is configure such that it does actually find it.

├── firmware-1.0
│   ├── saunders_backend
│   └── saunders_frontend
└── firmware_1.0.bb

My application code which is for now just a "hello world" flask application, is in saunders_backend. The setup.py file in there works as expected when I use it in on my host machine.

├── firmware-1.0
│   ├── saunders_backend/
│   │   ├── bin/
│   │   │   └── server
│   │   ├── MANIFEST.in
│   │   ├── requirements.txt
│   │   ├── saunders_apollo/
│   │   │   ├── config.py
│   │   │   ├── __init__.py
│   │   │   ├── models.py
│   │   │   ├── static/
│   │   │   ├── templates/
│   │   │   └── views.py
│   │   └── setup.py
│   └── saunders_frontend/
└── firmware_1.0.bb

I've been hacking on the .bb files to get it to install this into the resulting image. I do have IMAGE_INSTALL_append = " firmware" in the top-level local.conf.

My primary confusion is that I don't know what I should be using for the python application. do_install, do_install_append? What should SRC_UIR be? In effect is that I want the exact same behavior of "cd saunders_backend && pip install ." My setup.py file has install_requires with a list of all dependencies, which now is merely Flask.

Pointers would be appreciated.
BZ