Dear Maintainer,

To make the build process more effecient, the "python3-flit" build
engine has been spun out of the "flit" toolbox:

Here is the new situation

flit (the toolbox) | +-- python3-docutils | +-- python3-flit (the
engine, only requires the standard library) | +-- python3-pip | +--
python3-requests: ca-certificates,: python3-certifi, python3-chardet,
| python3-charset-normalizer, python3-idna, python3-urllib3 | +--
python3-tomli-w

So all your package still compiles as of today.

Please adapt your debian/control file accordingly:
s/flit/python3-flit/

As the old "flit" package was pulling a whole more packages, your
build might start to miss one of those.

If you wish to keep your package backportable, please dependes on
"python3-flit | flit"

Greetings

Alexandre