these 2 derivations will be built:
  /nix/store/wlv339icsjmy5bqahjljlm1jslzj5071-source.drv
  /nix/store/1y1rrsl64bnnn7savdhqf40g8rf9946b-bernstein-3.20.0.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy