these 2 derivations will be built:
  /nix/store/a323hnl4v11ngbawnxdl6k0yyzr530xw-flake-inputs.drv
  /nix/store/c4bwhvccbypdyi7ryf2kk4wnrk5r07hc-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy