this derivation will be built:
  /nix/store/qk3ysk23cd83h1dyvf66hwi5fh8wmdma-inputDerivation-effect-docs.drv
building '/nix/store/qk3ysk23cd83h1dyvf66hwi5fh8wmdma-inputDerivation-effect-docs.drv'...
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy