these 2 derivations will be built:
  /nix/store/mn25b9q6kcyym91zf6hrmac40gn2l3fz-flake-inputs.drv
  /nix/store/5svas1gmw89d37y1wwk77favcxq8msr4-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy