these 2 derivations will be built:
  /nix/store/2v2qy9hfcac7l9iz0zvjd60pd19mfczn-flake-inputs.drv
  /nix/store/nibdxd5kx2796war3z37kkxvcbl0m4ks-check-flake-inputs.drv
could not copy /nix/store/qj6hgkksh916p1m4isgqzmspsnhpadfi-flake-inputs: error: gRPC FetchNars failed: failed to connect to all addresses; last error: UNKNOWN: ipv6:%5B2a01:4f9:3071:1fc8::1%5D:50051: handshaker shutdown
error: some outputs are unexpectedly invalid