these 2 derivations will be built:
  /nix/store/iaiz5n8f4vivswq6r341wghx4g9llbjn-flake-inputs.drv
  /nix/store/888hf894q3rx0psgihqsf25hc13ycyz6-check-flake-inputs.drv
building '/nix/store/iaiz5n8f4vivswq6r341wghx4g9llbjn-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=21&system=aarch64-darwin'
building '/nix/store/iaiz5n8f4vivswq6r341wghx4g9llbjn-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> mac02: building iaiz5n8f4vivswq6r341wghx4g9llbjn-flake-inputs.drv
building '/nix/store/888hf894q3rx0psgihqsf25hc13ycyz6-check-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=20&system=aarch64-darwin'
building '/nix/store/888hf894q3rx0psgihqsf25hc13ycyz6-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> mac02: building 888hf894q3rx0psgihqsf25hc13ycyz6-check-flake-inputs.drv