these 2 derivations will be built:
  /nix/store/nw3d3xvarcnskswq8cmi7izy9bdn1fbb-flake-inputs.drv
  /nix/store/plj74bnmla6rm6xmag1hjwfdvwnq8sp0-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy