these 2 derivations will be built:
  /nix/store/ci5z3v8r5xk2jaiddar5ar372dgqcc2c-flake-inputs.drv
  /nix/store/psjl51wcdpz5yf1wyyn0xsm1x8qhhni4-check-flake-inputs.drv
building '/nix/store/ci5z3v8r5xk2jaiddar5ar372dgqcc2c-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/ci5z3v8r5xk2jaiddar5ar372dgqcc2c-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> mac02: building ci5z3v8r5xk2jaiddar5ar372dgqcc2c-flake-inputs.drv
building '/nix/store/psjl51wcdpz5yf1wyyn0xsm1x8qhhni4-check-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/psjl51wcdpz5yf1wyyn0xsm1x8qhhni4-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> mac02: building psjl51wcdpz5yf1wyyn0xsm1x8qhhni4-check-flake-inputs.drv