Installation problem - pip upgrade

[cwood1967]

Bug description

I am trying to install TLJH, can after running curl -L https://tljh.jupyter.org/bootstrap.py | sudo -E /usr/bin/python3 - --admin

It creates the /opt/tljh directory, and directories inside, but when trying to upgrade pip, it crashes with:

Existing TLJH installation not detected, installing...
Setting up hub environment...
Installing Python, venv, pip, and git via apt-get...
Setting up virtual environment at /opt/tljh/hub
Upgrading pip...
Ran /opt/tljh/hub/bin/pip install --upgrade pip==21.3.* with exit code 2
Exception:
Traceback (most recent call last):
  File "/opt/tljh/hub/lib/python3.6/site-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/opt/tljh/hub/lib/python3.6/site-packages/pip/commands/install.py", line 290, in run
    with self._build_session(options) as session:
  File "/opt/tljh/hub/lib/python3.6/site-packages/pip/basecommand.py", line 69, in _build_session
    if options.cache_dir else None
  File "/usr/lib/python3.6/posixpath.py", line 80, in join
    a = os.fspath(a)
TypeError: expected str, bytes or os.PathLike object, not int

Traceback (most recent call last):
  File "<stdin>", line 473, in <module>
  File "<stdin>", line 444, in main
  File "<stdin>", line 162, in run_subprocess
subprocess.CalledProcessError: Command '['/opt/tljh/hub/bin/pip', 'install', '--upgrade', 'pip==21.3.*']' returned non-zero exit status 2.

Expected behaviour

I thought the installation would finish.

Actual behaviour

The installation stopped with an error

How to reproduce

follow the installation instructions

Your personal set up

• OS: Ubunutu 18.04, workstation not a VM
• Version(s): The lastest

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[manics]

  File "/opt/tljh/hub/lib/python3.6/site-packages/pip/basecommand.py", line 69, in _build_session
    if options.cache_dir else None
  File "/usr/lib/python3.6/posixpath.py", line 80, in join
    a = os.fspath(a)

It looks like two different Python distributions are getting confused with each other. Could you try reproducing this on a fresh VM? What customisations do you have on your workstation, compared with a clean installation?

[cwood1967]

Thanks for the quick response. I will try to track that down and try on a VM.

[consideRatio]

I'll go for a close as I see no clear actionable followup. Note that we have also now recently stopped pinning the pip version.