these 2 derivations will be built:
  /nix/store/y2w8crva9mpbw1am9j61wjvi7zyq480l-flake-inputs.drv
  /nix/store/7kh3bzk51x7y70q76wg58rkcc7lpk9ld-check-flake-inputs.drv
building '/nix/store/y2w8crva9mpbw1am9j61wjvi7zyq480l-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/y2w8crva9mpbw1am9j61wjvi7zyq480l-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> elastic-arm-23d67df9: building y2w8crva9mpbw1am9j61wjvi7zyq480l-flake-inputs.drv
building '/nix/store/7kh3bzk51x7y70q76wg58rkcc7lpk9ld-check-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/7kh3bzk51x7y70q76wg58rkcc7lpk9ld-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> elastic-arm-23d67df9: building 7kh3bzk51x7y70q76wg58rkcc7lpk9ld-check-flake-inputs.drv