I am on a Mac, using VirtualBox. I am trying to get the example from the nixops manual to work. I have experimented with loading packages with nix-env, starting up nixos inside VirtualBox and playing with it, and now trying to startup the example in the manual with trivial.nix and trivial-vbox.nix. I have the examples exactly as they are in the manual, even while wondering whether I should change the email address in trivial.nix to something else.
When I deploy it, it starts up a nixos machine inside VirtualBox and goes a long ways, but eventually dies with the messages
copying path ‘/nix/store/2xhsqwyi091aa93r1na1fsvq2xknvf34-append-initrd-secrets’ from ‘ssh://root@192.168.99.103’…
error: cannot add path ‘/nix/store/2xhsqwyi091aa93r1na1fsvq2xknvf34-append-initrd-secrets’ because it lacks a hash
copying 1 paths…
copying path ‘/nix/store/a678jxi2d4fx3jz3m0anhxyzb8jrn03b-audit-disable’ from ‘ssh://root@192.168.99.103’…
error: cannot add path ‘/nix/store/a678jxi2d4fx3jz3m0anhxyzb8jrn03b-audit-disable’ because it lacks a hash
I cannot find out what “it lacks a hash” is supposed to mean. What should I do?