I wasn't able to setup vertico-directory without this. From https://github.com/radian-software/straight.el/issues/819#issuecomment-882039946. As far as I know, this doesn't actually enable these extensions. They must still be explicitly enabled. For what it's worth, I personally would prefer to see vertico-directory enabled by default by radian. I found the default Vertico experience unusable.
I wasn't able to setup vertico-directory without this. From https://github.com/radian-software/straight.el/issues/819#issuecomment-882039946. As far as I know, this doesn't actually enable these extensions. They must still be explicitly enabled. For what it's worth, I personally would prefer to see vertico-directory enabled by default by radian. I found the default Vertico experience unusable.