ImportError: No module named setuptools_rust on clean Ubuntu 16.04 (Python 2.7)

[Zhiwei-Z]

Steps to reproduce

1. On a clean installed Ubuntu 16.04 with python 2.7
2. Follow the instruction on https://pyrobot.org/docs/software
3. When running ./locobot_install_all.sh -t full -p 2 -l interbotix the error happened

Observed Results

Output log:

  Collecting cryptography
  Downloading https://files.pythonhosted.org/packages/9b/77/461087a514d2e8ece1c975d8216bc03f7048e6090c5166bc34115afdaa53/cryptography-3.4.7.tar.gz (546kB)
    100% |████████████████████████████████| 552kB 2.2MB/s 
    Complete output from command python setup.py egg_info:
    
            =============================DEBUG ASSISTANCE==========================
            If you are seeing an error here please try the following to
            successfully install cryptography:
    
            Upgrade to the latest pip and try again. This will fix errors for most
            users. See: https://pip.pypa.io/en/stable/installing/#upgrading-pip
            =============================DEBUG ASSISTANCE==========================
    
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-OJ8V9B/cryptography/setup.py", line 14, in <module>
        from setuptools_rust import RustExtension
    ImportError: No module named setuptools_rust
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-OJ8V9B/cryptography/
You are using pip version 8.1.1, however version 21.1.3 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

After running the recommended fix pip install --upgrade pip, pip no longer works: any pip operation or even just typing pip will result in the error

Traceback (most recent call last):
  File "/usr/bin/pip", line 9, in <module>
    from pip import main
  File "/home/locobot3/.local/lib/python2.7/site-packages/pip/__init__.py", line 1, in <module>
    from typing import List, Optional
ImportError: No module named typing

I don't think typing is introduced in python 2.7 hence the pip problem.

What is the correct branch / release that I should install on a clean Ubuntu 16.04 with Python 2.7? Or should I use python3 instead?

[jack6099boy]

You can try the following command to upgrade your pip

sudo apt-get remove python-pip
wget https://bootstrap.pypa.io/pip/2.7/get-pip.py
python2.7 get-pip.py
hash -r