Make code reloading work

[stchris]

@monneyboi reported that the reloading feature of flask run wasn't properly working. I'm pretty sure it has to do with the debugger we are trying to attach. In either case enabling earlier fails (instead of trying to fail lazily so a debugger can be shown) fixed the code reloading issue.

[tillprochaska]

@stchris Following up on our discussion earlier today, here’s the behavior I observe with these changes:

When running make web / docker compose -f ... up:

1. Introduce a syntax error and save file
2. Flask dev server reloads code
3. Dev server exits due to the syntax error
4. Docker tries to restart the container
5. Dev server exists again
6. Infinite container restart loop

When using docker compose run -f ... api:

1. Introduce a syntax error and save file
2. Flask dev server reloads code
3. Dev server exists due to the syntax error
4. I need to manually restart the container

Maybe there is another solution to this problem that doesn’t caveats?

[tillprochaska]

Also, is anyone here actually using debugpy? If this only happens when used together with debugpy, we might want to consider simply removing debugpy from the default development setup?

[tillprochaska]

According to microsoft/debugpy#808 disabling only Flask’s debugger might help (if we want to keep support for debugpy)?

[monneyboi]

Also, is anyone here actually using debugpy? If this only happens when used together with debugpy, we might want to consider simply removing debugpy from the default development setup?

This is exactly what i was thinking