these 2 derivations will be built:
  /nix/store/5c9v3y36na47qny53nnz1i0h6dga4mh1-flake-inputs.drv
  /nix/store/lrp8ij1qx0qygrxfs1rnlh187f3a0p54-check-flake-inputs.drv
building '/nix/store/5c9v3y36na47qny53nnz1i0h6dga4mh1-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/5c9v3y36na47qny53nnz1i0h6dga4mh1-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> mac02: building 5c9v3y36na47qny53nnz1i0h6dga4mh1-flake-inputs.drv
building '/nix/store/lrp8ij1qx0qygrxfs1rnlh187f3a0p54-check-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/lrp8ij1qx0qygrxfs1rnlh187f3a0p54-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> mac02: building lrp8ij1qx0qygrxfs1rnlh187f3a0p54-check-flake-inputs.drv