Project has been abandoned.
Not gunna use a proprietary "scripting language" by Microsoft anymore.
(And especially not gonna use their OS)
Oh nice I remember the random crashes I used to have on Windows now :()
If you're having the same issue, here's a fix:
sudo mkfs.ext4 /dev/sdaX #replace X with the windows partition
sudo mount /dev/sdaX /mnt
sudo nixos-install
This is a really simple script to stop all programms, that are stuck and let your PC hang up
It can be run without Admin privileges, but I'd recommend you to start it with UAC rights, because than it can force tasks to close.