these 2 derivations will be built:
  /nix/store/1xpxmqb15h4aaz78c34wclq0zf2njnq9-flake-inputs.drv
  /nix/store/0call5p3anvm87jbg9h1zdk69zj19n12-check-flake-inputs.drv
building '/nix/store/1xpxmqb15h4aaz78c34wclq0zf2njnq9-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=23&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/1xpxmqb15h4aaz78c34wclq0zf2njnq9-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> elastic-arm-564aa99c: building 1xpxmqb15h4aaz78c34wclq0zf2njnq9-flake-inputs.drv
building '/nix/store/0call5p3anvm87jbg9h1zdk69zj19n12-check-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/0call5p3anvm87jbg9h1zdk69zj19n12-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> elastic-arm-2c14001d: building 0call5p3anvm87jbg9h1zdk69zj19n12-check-flake-inputs.drv