these 2 derivations will be built:
  /nix/store/z8021yg54a56nzqq4fjqr03zq95sawgf-flake-inputs.drv
  /nix/store/id7hy9r5izmdf26ja8f6fa46q1lm474a-check-flake-inputs.drv
building '/nix/store/z8021yg54a56nzqq4fjqr03zq95sawgf-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/z8021yg54a56nzqq4fjqr03zq95sawgf-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> mac02: building z8021yg54a56nzqq4fjqr03zq95sawgf-flake-inputs.drv
building '/nix/store/id7hy9r5izmdf26ja8f6fa46q1lm474a-check-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/id7hy9r5izmdf26ja8f6fa46q1lm474a-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> mac02: building id7hy9r5izmdf26ja8f6fa46q1lm474a-check-flake-inputs.drv