freezing nested packages (with relative imports)

[iot49]

I'm trying to freeze a package with a sub-package, i.e.

package_top/
    __init__.py
   a.py
   package_nest/
       __init__.py
       b.py

My manifest.py looks as follows:

package("package_top")

The following do not work:

package_top/__init__.py:
     from . import package_nest
     package_nest.b. ...

My questions:

1. How can I import a nested package (package_nest)?
2. How can I use relative imports in frozen packages (from . import ..., etc)?

Of course it's possible to accomplish all this without nested packages or relative imports. Just the namespace get a bit more cluttered.

P.S. Without freezing everything works as expected. Also, other (not nested) packages and module work as expected after freezing.

[jimmo]

@iot49 Freezing should make no difference to the behavior of the code. Anything that works on the filesystem should work identically when it's frozen.

What you have should work (and works for me, both frozen and filesystem). I will note that package_top/package_nest/__init__.py must contain from . import b in order to be able to use package_nest.b. Or you must import package_nest.b in package_top/__init__.py (That's true regardless of filesystem or frozen).

[iot49]

Odd. When I tried 'from . import b', b was not found. Do I need a separate @Package for 'b'? If so, what name and path would I specify?

[jimmo]

@iot49 I think you'll need to share exactly the contents of your files that shows the problem.

[iot49]

The repo is at https://github.com/iot49/rv-gateway.

code-frozen contains manifest.py and the code frozen into the custom micropython VM.
code contains the "offending" package app. When I freeze it, micropython balks at

from . import tasks

in file app/__init__.py. I.e. micropython finds all frozen code except the nested package app/tasks.

Without freezing everything works as expected. Note that I have package(app) in the manifest, but no package(app/tasks) or whatever the correct syntax would be if such a directive is required.

When I tried freezing app, that folder was also in the code-frozen folder. I just do not freeze it right now since it's not working.

Further, I have changed sys.path in boot.py to first search the filesystem and .frozen last so I can override code for debugging and bug fixing.

In summary everything works as expected except freezing the nested frozen package app/tasks.

[jimmo]

Sorry @iot49 is there any way you can try to trim this down to a simpler example?

[iot49]

Will do, but will take some time since I do not have access to a computer right now (nor do I need the solution right now, obviously).