Cannot install OrcaNet in any reasonable modern python3 setup

Hello, I am having bad time installing (and trying to run) OrcaNet in any reasonable modern python3 setup. Several of our models have ragged tensors. Keras 2 supports ragged tensors (Input with ragged = True) but this seems to be missing in Keras3, which is what I get if I install TensorFlow nowadays. TensorFlow 2.7 is no longer available on pip(3). protobuf defaults to 4.25, but TF and/or Keras would like it not later than 3.20 h5py has its own troubles. The Singularity container does not work:

1. it's not possible to change the paths to the CUDA libraries.
2. without CUDA, I get: ModuleNotFoundError: No module named 'orcanet.lib' Any ideas? Thanks

Cristiano