I needed to build Meshtastic firmware on WSL in order to produce binary UF2 firmware for the Meshtastic XIAO BLE variant.

Here's what I had to do.

1. Install Debian from the Microsoft Store
2. Open and set up user

3. sudo apt-get install git python3-venv

4. curl -fsSL -o get-platformio.py https://raw.githubusercontent.com/platformio/platformio-core-installer/master/get-platformio.py 
   python3 get-platformio.py

1. git clone https://github.com/meshtastic/firmware.git meshtastic-firmware && cd meshtastic-firmware

2. Optional: check out a tagged release
   

   git checkout tags/v2.3.7.30fbcab

3. ./variants/xiao_ble/xiao_ble.sh

1. pio run -e xiao_ble

2. UNFINISHED