Python 3.9 is not supported

[dariomas]

Temorary solution

Please use the latest Python 3.8 (not 3.9). See https://docs.platformio.org/en/latest/faq.html#install-python-interpreter

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Configuration

Operating system: Linux Fedora 33

PlatformIO Version (platformio --version): PlatformIO, version 5.0.1

Description of problem

The Platformio installer on a Linux system wit Python 3.9 (Fedora 33) hung while installing because it does not find the
'platformio/contrib-pysite @ ~2.39.0'

Actual Results

VSCode: 1.50.0
PIO IDE: v2.1.0
System: Linux, 5.8.13-300.fc33.x86_64, x64

%23 Exception

Error: Error: Could not find the package with 'platformio/contrib-pysite @ ~2.39.0' requirements for your system 'linux_x86_64'

Additional info

A temporary resolution:

• setting in VSCode path https://docs.platformio.org/en/latest/integration/ide/vscode.html#platformio-ide-custompath
  "platformio-ide.customPATH": "/home/xxxx/.platformio/penv/bin/"

• disabling in VSCode builtin core https://docs.platformio.org/en/latest/integration/ide/vscode.html#platformio-ide-usebuiltinpiocore

• installing python3.8 in Fedora 33
  dnf install python3.8

• run the Platformio installation script with python 3.8 (creating virtualenv with python3.8)
  python3.8 -c "$(curl -fsSL https://raw.githubusercontent.com/platformio/platformio/develop/scripts/get-platformio.py)"

• check into the penv/bin/ that python links to 3.8

%23 Configuration

VSCode: 1.50.0
PIO IDE: v2.1.0
System: Linux, 5.8.13-300.fc33.x86_64, x64

[bronsen]

Another approach is to create a python virtualenv with the desired python version. Then start vscode from the actived virtualenv: platformio then picks ups the compatible version.

Here are some more details, for fish shell, using pyenv and virtualfish.

[ivankravets]

Packages for Python 3.9 are published in the registry.