these 4 derivations will be built:
  /nix/store/chz4jx9qbjzbz5q32yrgs0lfnmv33vp7-clan-runtime.drv
  /nix/store/r3gmn21dymp8l3pgqqi7vp884b4bc1kx-clan-cli-source.drv
  /nix/store/kyh88rxdldlf8ndk1dv4whgw7bd4yvif-clan-cli.drv
  /nix/store/0pqawcl0kcb2p6lzhzpbgvbjdbwhwiih-nix-shell.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy