I know you probably know this, but Cygwin, WSL, and WSL2 are all very different from each other in approach despite the superficial similarity of purpose being

I know you probably know this, but Cygwin, WSL, and WSL2 are all very different from each other in approach despite the superficial similarity of purpose being to run Linux/POSIX applications on Windows. Cygwin is a source level API adaptor, so recompilation is required. WSL is an ABI adaptor like the reverse of WINE. WSL2 is an adapted Linux kernel running in a featherweight VM.