Hi Attila, Apologies it's taken so long to look at these patches. I've gone ahead and pushed the two patches adding new packages. I had a look at the changes to the trezor related packages. I wonder if python-simple-rlp should be a propagated input for any packages? That might avoid specifying it as an input to trezor-agent. Also, it would be good to have any changes to trezor-agent in a separate commit if they're needed. Thanks, Chris