How to use specific arduino-esp32 version in PlatformIO
Add this line to platformio.ini in order to use a specific arduino-esp32 version - such as 1.0.6:
platform_packages = framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git#1.0.6
Note that for some upstream versions - at Dec 17 2021 that is arduino-esp32 v2.x, you also need to use a different platform:
platform = https://github.com/platformio/platform-espressif32.git#feature/arduino-upstream
platform_packages = framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git#2.0.1
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