When Espressif Systems released Arduino ESP32 Core 3.0.0 we noted that PlatformIO support was in doubt due to business issues between Espressif and Platform IO developers. There has been no progress ...
I can confirm that building on Platformio for STM32WL(55JC1) will fail as it looks like the SubGhz library is missing. Checking the output in verbose mode, the include path for SubGhz is definitely ...