Is it possible to build packages on windows 10? Only VM?
You need a UNIX/Linux system to build on. Should work in a VM as well. You might wanna try WSL (preferably v2 that comes with build 2004).
Back than i used, tested dockers "LCOW" (Linux Containers on Windows) mode, but not sure if LCOW is still available in the newer Docker versions, since they also switched to WSL i think. You may give it a try, maybe it still works on windows. If not, yes you need WSL2 or a VM to either run my Builder scripts or use the official SDK.
WSL2 works fine with Ubuntu 18.04 and following the guides:
The same setup on Ubuntu 20.04 doesn't work for me, keeps throwing compile errors.