these 2 derivations will be built:
  /nix/store/slvnd8l6xdc25qfjrbpijh77cd5ax1gf-flake-inputs.drv
  /nix/store/fjbbpp0fpbwfapwj70h13ihqifcvyp93-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy