warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
this derivation will be built:
  /nix/store/v6d940sgy4yzhns316nrb7v8wq8z4qgz-inputDerivation-gh-pages.drv
building '/nix/store/v6d940sgy4yzhns316nrb7v8wq8z4qgz-inputDerivation-gh-pages.drv'...