these 2 derivations will be built:
  /nix/store/4ffljrw71b1frj4jh89jq690f8gj8lhl-flake-inputs.drv
  /nix/store/ymz9nx9jqghyx3wpjflmrf4h07x7wap5-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy