Issue with ESP8266 boards library

Development Tools IDE 2.x
1

I have manually installed the ESP8266 boards library using GitHub inside the sketchbook folder (Documents\Arduino\hardware\esp8266com) and works fine.

I am selecting my board LOLIN(WEMOS) D1 mini Pro - ESP8266 Boards (3.2.0-dev) and
everything compiles and uploads fine.

However every time I open the .ino file I get a prompt at the lower right saying "The esp8266 [v 3.1.2] core has to be installed for the currently selected LOLIN(WEMOS) D1 mini Pro board. Do you want to install it now?

A bug maybe ?
IDE v2.1.1.

EDIT : The only way to remove this annoying message is to remove the additional board URL for ESP 8266 (https://arduino.esp8266.com/stable/package_esp8266com_index.json)

2

There is no such thing as a boards library. There are board files, but they don't go in the sketchbook folder

Please describe exactly what you have installed and how you did it

3

I followed the manual installation procedure (using Git version) from here:

https://arduino-esp8266.readthedocs.io/en/latest/installing.html

I didn't use the IDE boards manager.

4

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