these 2 derivations will be built:
  /nix/store/qs61ywi8vrlhxb5bg7z1vs3n1h09j6aj-flake-inputs.drv
  /nix/store/1rv8yln7fh1whqn66rp8hdrd6mlk41sg-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy