ImportError on import espefuse line of custom python script (ESPTOOL-542)

[belezyakov]

Operating System

Ubuntu 20.04.5 and Debian GNU/Linux 10

Esptool Version

v4.3

Python Version

Python 3.8.10

Full Esptool Command Line that Was Run

import espefuse

Esptool Output

Traceback (most recent call last):
  File "/home/.../flasher_esp.py", line 4, in <module>
    import espefuse
  File "/home/.../my_env_folder/esptest/lib/python3.8/site-packages/espefuse/__init__.py", line 13, in <module>
    import espefuse.efuse.esp32 as esp32_efuse
  File "/home/.../my_env_folder/esptest/lib/python3.8/site-packages/espefuse/efuse/esp32/__init__.py", line 1, in <module>
    from . import operations
  File "/home/.../my_env_folder/esptest/lib/python3.8/site-packages/espefuse/efuse/esp32/operations.py", line 17, in <module>
    from . import fields
  File "/home/.../my_env_folder/esptest/lib/python3.8/site-packages/espefuse/efuse/esp32/fields.py", line 16, in <module>
    from .. import base_fields
  File "/home/.../my_env_folder/esptest/lib/python3.8/site-packages/espefuse/efuse/base_fields.py", line 13, in <module>
    from bitstring import BitArray, BitString, CreationError
ImportError: cannot import name 'BitString' from 'bitstring' (/home/.../my_env_folder/esptest/lib/python3.8/site-packages/bitstring.py)

What is the Expected Behaviour?

No error on importing espefuse

More Information

It seems like installing esptool in raw environment using pip collects bitstring wheel of new version 4.0.0 or 4.0.1 which satisfies requirement subitstring>=3.1.6, but incompatible with esptool. Preinstalling bitstring==3.1.9 eliminates the issue.

Other Steps to Reproduce

No response

[dobairoland]

Thanks @belezyakov for informing us. We will investigate....

The desired solution would be to keep compatibility with old and new bitstring as well.

[belezyakov]

According to bitstring release notes for v4.0.1:
Removed ConstBitArray and BitString class aliases. Use Bits and BitStream instead.