NameError: name 'config' is not defined when PIO pulled the Expressif files from Git

[maxg]

Thank you… my .ini says this:

[env:esp32doit-devkit-v1]
;platform = espressif32
platform = https://github.com/Jason2866/platform-espressif32.git#Arduino/IDF5
board = esp32doit-devkit-v1
framework = arduino, espidf

monitor_speed = 115200

… which I believe was auto-created when I selected the board.
Huh, tis is where it came from …

Difficulties compiling ESP-IDF

Can tell you already: The timerAlarm() code is for Arduino-ESP32 3.x. PlatformIO is still on the Arduino-ESP32 2.x core. That had a different API. Compare vs if you want to build the latest Arduino-ESP32 3.x WITH ESP-IDF as a base build, you’re gonna need Tasmota’s fork for that. (https://github.com/Jason2866/platform-espressif32). The current standard espressif32 platform is not up to date on that yet. So a change to platform = https://github.com/Jason2866/platform-espressif32.git#Ard…

Assuming this is a pure ESP project (not sure what a non-pure project would be; I am not flippant, I simply don’t know), I should select your second option.
(A while later) done. No errors during install.

After stumbling over the ‘compile issue’ I remembered that we dealt with this before.
However, I have now used your first option and it compiles again error-free.
So a non-pure ESP project is one that requires Arduino functions.