I have a project with the following structure in the src directory:

├── migrations
├── .envrc
├── requirements.txt
├── alembic.ini
├── __init__.py
├── flask_app
│   ├── model.py (db and migrate objects declared here)
│   ├── app.py (from .model import db, migrate)
│   ├── landing
│   │   ├── landing_templates
│   │   ├── models.py (from flask_app.model import db)
│   │   ├── forms.py
│   │   └── views.py
│   ├── config.py
│   ├── __init__.py
│   ├── user
│   │   ├── user_templates
│   │   ├── models.py (from flask_app.model import db)
│   │   └── views.py
│   ├── templates
├── alembic
├── run_flask_app.py

When I run the line below while in the src directory (which is in my python path):

flask --app 'flask_app.app:create_app("flask_app.config.DevelopmentConfig")' db migrate

Flask Migrate doesn’t detect any models and no migration script is generated. (ie INFO [alembic.env] No changes in schema detected.).

However, when I change the imports in the models.py files to from src.flask_app.model import db the models are detected and a migration script is generated.

When I deploy the src directory contents are deployed, but not the the directory itself, so I don’t think the the from src.flask_app.model import db is an option. I had used this structure in another project and used Flask_Script for migrations, but Flask_Script is no longer maintained. I’d like to move to the modern tool, but I can’t figure out what my problem is.