these 2 derivations will be built:
  /nix/store/0vb5v89r263h3ap4rmsmsi4qpni9ax21-flake-inputs.drv
  /nix/store/0f8aqjvinlkxk9xr4qck6vib9nriqfba-check-flake-inputs.drv
building '/nix/store/0vb5v89r263h3ap4rmsmsi4qpni9ax21-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&restart-grace=900&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/0vb5v89r263h3ap4rmsmsi4qpni9ax21-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> mac02: building 0vb5v89r263h3ap4rmsmsi4qpni9ax21-flake-inputs.drv
building '/nix/store/0f8aqjvinlkxk9xr4qck6vib9nriqfba-check-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&restart-grace=900&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/0f8aqjvinlkxk9xr4qck6vib9nriqfba-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> mac02: building 0f8aqjvinlkxk9xr4qck6vib9nriqfba-check-flake-inputs.drv