Install esptool inside Virtual Environment, on Raspberry Pi 5 running 64-bit Raspberry Pi OS (bookworm).

In pre-bookworm Raspberry Pi OS, esptool can be install esptool directly, system-wide, using pip. This is no longer the case in the new Raspberry Pi OS (bookworm).

From bookworm onwards, when using pip, packages must be installed into a Python virtual environment.
(ref: https://www.raspberrypi.com/documentation/computers/os.html#installing-python-packages-using-apt)

This video show steps in Esptool.py Documentation to Install esptool inside Virtual Environment, on Raspberry Pi 5 running 64-bit Raspberry Pi OS (bookworm).

- Create a virtual environment and choose its name, e.g. ‘esptoolenv’:
  $ python -m venv esptoolenv
- Activate the virtual environment:
  $ source esptoolenv/bin/activate
- Install the esptool.py within the active virtual environment:
  $ pip install esptool
- When you’re done, deactivate the virtual environment:
  $ deactivate

next:
~ Install CircuitPython firmware on Waveshare ESP32-S3-Zero