> You mean WSL2. Yes, indeed. > I thought it was the coolest thing. NT was designed to have different subsystems[1]. Win32 subsystem was a layer on top of NT

> You mean WSL2. Yes, indeed. > I thought it was the coolest thing. NT was designed to have different subsystems[1]. Win32 subsystem was a layer on top of NT, and was a peer to the POSIX subsystem, and IIRC even OS/2. WSL1 ideas was certainly not new in the context of NT. FreeBSD also has a Linux subsystem. [1]: https://upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Windows_2000_architecture.svg/1920px-Windows_2000_architecture.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Wi...