these 2 derivations will be built:
  /nix/store/0948pyk2vsb6j3230din46gnbi5lzg15-flake-inputs.drv
  /nix/store/wnrha22c94z7fpszyybxi0gal18sb8wc-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy