I just installed macOS Big Sur on my iMac, and I wanted to give you feedback. I will post here bug if I find any.
First test: I installed Big Sur over Catalina, so far VSCode (latest version) and PIO (latest stable) both work out of the box. I just had to reinstall Git from the Command Line Tool package, as sudo xcode-select --install kept telling me that the servers are busy. The CLI tools package can be downloaded directly here.
I also tried to compile my ESP32/8266 projects, they all compiled and transfered to their respective platforms flawlessly.
Thank you so much for your report! Could you navigate to VSCode settings and enable “Using development version of PlatformIO Core” for PlatformIO IDE extension? Now, please run