these 2 derivations will be built:
  /nix/store/d290kchyam26l0l2rg4glng71vxszg55-flake-inputs.drv
  /nix/store/kdij9azv4ja2zv6zxhqp98269cy1jd72-check-flake-inputs.drv
building '/nix/store/d290kchyam26l0l2rg4glng71vxszg55-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/d290kchyam26l0l2rg4glng71vxszg55-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> elastic-arm-9a50e053: building d290kchyam26l0l2rg4glng71vxszg55-flake-inputs.drv
building '/nix/store/kdij9azv4ja2zv6zxhqp98269cy1jd72-check-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/kdij9azv4ja2zv6zxhqp98269cy1jd72-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> elastic-arm-9a50e053: building kdij9azv4ja2zv6zxhqp98269cy1jd72-check-flake-inputs.drv