these 2 derivations will be built:
  /nix/store/06kbx5vabxy1xflg9jrq1ggxzgz7kyla-flake-inputs.drv
  /nix/store/gf2p1czimy0lw9dlx0x9pmmab9z87chr-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy