these 5 derivations will be built:
  /nix/store/31pybl9caxk1svq50gw7s6awmdrbvh3s-clan-runtime.drv
  /nix/store/jm5zxh82hpfr370a86kc3hr2rmk9wik5-clan-cli-source.drv
  /nix/store/9l8b6yz69b8l83rxb862hvy89cg4h1zp-clan-cli.drv
  /nix/store/kbyzsa8zf5x2xqxqa943i65kq357dm97-closure-info.drv
  /nix/store/zq7sr87xfk5s3wvkr61hjva0dkyl6am2-check-vars.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy