this derivation will be built:
  /nix/store/gx7r9crddanhprsaygnv3gg0pr7m1jjf-inputDerivation-effect-docs.drv
building '/nix/store/gx7r9crddanhprsaygnv3gg0pr7m1jjf-inputDerivation-effect-docs.drv'...
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy