these 2 derivations will be built:
  /nix/store/v8dnynxg11abxp6g4g61bzwjx2i5xby3-flake-inputs.drv
  /nix/store/s4bd6im1pfakwk3cwipbv1k24iwh5d3m-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy