these 2 derivations will be built:
  /nix/store/r20wdnpbc4kxyy4pgb6z1hsbk9cvvrmv-clan-runtime.drv
  /nix/store/18dd8vgi5w3zw1li602gm2mdh0l5yh9x-clan.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy