these 2 derivations will be built:
  /nix/store/llj3skdd3ynpz1w8ac4srvmnrvwh65yx-flake-inputs.drv
  /nix/store/kamrscdha8516a2pcc4sbp2cvv4m5lc3-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy