charset-normalizer is breaking PyInstaller (and maybe more)

[itamarst]

Traceback (most recent call last):
  File "requests\compat.py", line 11, in <module>
ModuleNotFoundError: No module named 'chardet'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "tahoe.py", line 19, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "allmydata\scripts\runner.py", line 24, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "allmydata\scripts\tahoe_invite.py", line 24, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "allmydata\client.py", line 32, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "allmydata\storage_client.py", line 77, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "allmydata\storage\http_client.py", line 32, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "treq\__init__.py", line 5, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "treq\api.py", line 5, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "treq\client.py", line 32, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "treq\response.py", line 5, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "requests\__init__.py", line 45, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "requests\exceptions.py", line 9, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "requests\compat.py", line 13, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "charset_normalizer\__init__.py", line 24, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "charset_normalizer\api.py", line 5, in <module>
  File "PyInstaller\loader\pyimod02_importers.py", line 499, in exec_module
  File "charset_normalizer\cd.py", line 9, in <module>
ModuleNotFoundError: No module named 'charset_normalizer.md__mypyc'
[7016] Failed to execute script 'tahoe' due to unhandled exception!

[exarkun]

Merged in ​https://github.com/tahoe-lafs/tahoe-lafs/commit/d64529ac89f6a059be110d6768bd054d185f7813

[GitHub <noreply@…>]

In 759974a/trunk:

Merge pull request #1252 from crwood/3966.unpin-charset-normalizer

Unpin charset-normalizer / (re-)fix PyInstaller? builds

Re-fixes: ticket:3966