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tonyzhaozh / aloha

MIT License
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conda python version 3.8.16 libffi error #3

Closed DuaneNielsen closed 1 year ago

DuaneNielsen commented 1 year ago

Hey Tony,

Latest 3.8.16 version of python is broken on Ubuntu 20.04

will give the below error.. (when executing recording.py)

cv_bridge.boost.cv_bridge_boost import getCvType
ImportError: /lib/x86_64-linux-gnu/libp11-kit.so.0: undefined symbol: ffi_type_pointer, version LIBFFI_BASE_7.0

This is due to an incompatibility between the libffi shipped with 20.04, and the version python 3.8.16 expects.. ( think it's 3.3 in 20.04 but python is expecting 3.4... something like that)

conda install python=3.8.10

in the aloha environment fixes the problem.

Recommend specifying 3.8.10 in the README.md instead of 3.8 as current

tonyzhaozh commented 1 year ago

Hi Duane,

Sorry for the late reply as I have been quite busy lately. I actually encountered the same error when installing Aloha in a new computer, and have been quite perplexed by it. Looks like this is the root cause and thanks for catching it!

I just updated the requirement here.

Aloha, Tony