PSA:
nixos-rebuild build-vm (--flake DIR#HOSTNAME / configuration.nix)
./result/bin/SCRIPT
to build and launch a nixos vm with qemu.
nixos-rebuild build-vm (--flake DIR#HOSTNAME / configuration.nix)
./result/bin/SCRIPT
to build and launch a nixos vm with qemu.
build-vm is the same as building the configs “config.system.build.vm” attribute.
nixos-rebuild is fine for getting started but you end up needing to use the attribute path to do anything more complicated like CI caching or inspecting the drvPath.