these 2 derivations will be built:
  /nix/store/l4w43s04qrja2v42y45dpfp0bvmwp633-options.json.drv
  /nix/store/3k3qnyqx6ya367yms2sfgzflmhfyzcib-options.md.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy