Now that overriding fileSystems in qemu-vm.nix works again, it's
important that the VM tests that add additional file systems use the
same override priority. Instead of using the same magic constant
everywhere, they can now use mkVMOverride.
http://hydra.nixos.org/build/6695561
Those tests are flapping and redundant to some degree, as two
configurations are tested in NixOps as well. So, let's deactivate them
until the 1.0 release of nixpart, which has a more general approach for
automatically partitioning NixOS installations.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
It requires a writable /nix/store to store the build result. Also,
wait until we've reached multi-user.target before doing the build, and
do a sync at the end to ensure all data to $out is properly written.
http://hydra.nixos.org/build/6496716
