Ok, here is the explanation.
By looking at old build logs I had, this is what happens:
The following packages have unmet dependencies:
python3-numba : Depends: python3 (< 3.13) but 3.13.2-2 is to be installed
Depends: python3-numpy-abi9 but it is not installable
E: Unable to correct problems, you have held broken packages.
E: The following information from --solver 3.0 may provide additional context:
Unable to satisfy dependencies. Reached two conflicting decisions:
1. python3-numba:amd64 is selected for install because:
1. sbuild-build-depends-main-dummy:amd64=0.invalid.0 is selected for
install
2. sbuild-build-depends-main-dummy:amd64 Depends python3-numba (>= 0.53)
2. python3-numba:amd64 Depends python3 (< 3.13)
but none of the choices are installable:
[no choices]
apt-get failed.
E: Package installation failed
Not removing build depends: cloned chroot in use
So I would agree this does not have an easy fix, as the only
information provided by the test script is a simple yes/no.
Thanks.