Install Quartus 21.1 EDK on Windows
1. Install Eclipse into the Quartus Installation
Follow the instructions in the EDK directory:
C:\intelFPGA_lite\21.1\nios2eds\bin\README
2. Install WSL 1 Ubuntu
From a Windows shell:
wsl --install # only necessary if WSL itself has not been installed
wsl --set-default-version 1
wsl --install -d Ubuntu-18.04 # other versions do not work!
wsl --setdefault Ubuntu-18.04 # only necessary when multiple WSL distros are present
wsl sudo apt-get update
wsl sudo apt-get upgrade
wsl sudo apt-get install wsl dos2unix make