7e7aa529d9
Keeping the VM state test across several run sometimes lead to subtle and hard to spot errors in practice. We delete the VM state which contains (among other things) the qcow volume. We also introduce a -K (--keep-vm-state) flag making VM state to persist after the test run. This flag makes test-driver.py to match its previous behaviour.
To build the manual, you need Nix installed on your system (no need
for NixOS). To install Nix, follow the instructions at
https://nixos.org/nix/download.html
When you have Nix on your system, in the root directory of the project
(i.e., `nixpkgs`), run:
nix-build nixos/release.nix -A manual.x86_64-linux
When this command successfully finishes, it will tell you where the
manual got generated.