def verifyDeviceIDSet(machine, expectedDevice):
machine.wait_until_succeeds(
- '(( "$(nix eval --raw -f "<nixos/nixos>" config.services.syncthing.declarative.devices.%s.id | wc -c)" == 63 ))'
+ '(( "$(nix --experimental-features nix-command eval --impure --raw --expr "(import <nixos/nixos> {}).config.services.syncthing.declarative.devices.%s.id" | wc -c)" == 63 ))'
% expectedDevice
)