these 3 derivations will be built:
  /nix/store/9fxibgfn8qxcfxa0a8pvjyzxmvaz1kps-clan-cli-source.drv
  /nix/store/4f6g8skknvhn5mcwm7s75j5a2x8zdsgr-clan-cli.drv
  /nix/store/q5jipf0pk3zv7abna48hgniijhhkvj90-nix-shell.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy