these 2 derivations will be built:
  /nix/store/q1j79ls23aprw4gdincqngqfwwf0j7nr-flake-inputs.drv
  /nix/store/d2vjk8hqnxxq6dly1wq4hicws9mhpp0g-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy