these 2 derivations will be built:
  /nix/store/vkckid20fy2najvpp88g6i7v8bzl7aml-flake-inputs.drv
  /nix/store/q6s4qpwnrh0c82dygk4cswipa09dys5z-check-flake-inputs.drv
building '/nix/store/vkckid20fy2najvpp88g6i7v8bzl7aml-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/vkckid20fy2najvpp88g6i7v8bzl7aml-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> elastic-arm-9a50e053: building vkckid20fy2najvpp88g6i7v8bzl7aml-flake-inputs.drv
building '/nix/store/q6s4qpwnrh0c82dygk4cswipa09dys5z-check-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/q6s4qpwnrh0c82dygk4cswipa09dys5z-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> elastic-arm-9a50e053: building q6s4qpwnrh0c82dygk4cswipa09dys5z-check-flake-inputs.drv