declare drv_path
host="root@fedi203.abundos.eu"
sshOpts=(
  -o BatchMode=yes
  -o StrictHostKeyChecking=no
)
command=(nix-instantiate --expr '
  let
    sources = import ./npins;
    configuration = {
      imports = [
        ./deployment/check/common/targetNode.nix
        "${sources.nixpkgs}/nixos/modules/profiles/qemu-guest.nix"
        "${sources.disko}/module.nix"
      ];
      disabledModules = [ "virtualisation/qemu-vm.nix" ];
      config = {
        nix.nixPath = lib.mapAttrsToList (k: v: k + "=" + v) sources;
        networking = {
          nameservers = [
            "95.215.185.6"
            "95.215.185.7"
            "2a00:51c0::5fd7:b906"
            "2a00:51c0::5fd7:b907"
          ];
          interfaces.eth0.ipv4.addresses = [
            {
              address = "95.215.187.203";
              prefixLength = 24;
            }
          ];
          interfaces.eth0.ipv6.addresses = [
            {
              address = "2a00:51c0:13:1305::203";
              prefixLength = 64;
            }
          ];
          defaultGateway = {
            address = "95.215.187.1";
            interface = "eth0";
          };
          defaultGateway6 = {
            address = "2a00:51c0:13:1305::1";
            interface = "eth0";
          };
        };
      };
    };
    eval = import "${sources.nixpkgs}/nixos/lib/eval-config.nix" {
      system = builtins.currentSystem;
      specialArgs = {
        inherit sources;
      };
      modules = [ configuration ];
    };
    os = {
      inherit (eval) pkgs config options;
      system = eval.config.system.build.toplevel;
      inherit (eval.config.system.build) vm vmWithBootLoader;
    };
  in
  {
    drv_path = os.config.system.build.toplevel.drvPath;
    out_path = os.config.system.build.toplevel;
  }
')
"${command[@]}" -A out_path
json="$("${command[@]}" --eval --strict --json)"
eval "export $(echo $json | jq -r 'to_entries | map("\(.key)=\(.value)") | @sh')"
outPath=$(nix-store --realize "$drv_path")
NIX_SSHOPTS="${sshOpts[*]}" nix-copy-closure --to "$host" "$outPath" --gzip --use-substitutes
ssh "${sshOpts[@]}" "$host" "nix-env --profile /nix/var/nix/profiles/system --set $outPath; $outPath/bin/switch-to-configuration switch"