this derivation will be built:
  /nix/store/1j7m4pm0ag05fh4s4g5cwszbzpk6r26c-inputDerivation-effect-docs.drv
building '/nix/store/1j7m4pm0ag05fh4s4g5cwszbzpk6r26c-inputDerivation-effect-docs.drv'...
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy