Installation of ESP-IDF fails when environment contains variable PIP_USER=yes - error: Can not perform a '--user' install (IDFGH-6237)

[georgik]

Environment

• Development Kit: none
• IDF version : 4.3.1
• Build System: idf.py
• Operating System: Windows, Linux, macOS
• (Windows only) environment type: Plain Command Prompt,PowerShell

Problem Description

Installation scripts of ESP-IDF fails when environment variable PIP_USER is set to value yes

Expected Behavior

Installation scripts (install.bat, install.sh, install.ps1) deploys ESP-IDF or informs user about problem with the variable.

Actual Behavior

Installation fails on command: python.exe -m pip install --no-warn-script-location -r .......\esp-idf\requirements.txt--extra-index-url "https://dl.espressif.com/pypi"

Error message:

ERROR: Can not perform a '--user' install. User site-packages are not visible in this virtualenv.

Steps to reproduce

CMD:

set PIP_USER=yes
install.bat

PowerShell:

$env:PIP_USER="yes"
.\install.ps1

Bash

export PIP_USER=yes
./install.sh

Workaround

Set PIP_USER to no or delete the environment variable and run install script.