github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/sql/opt/README.md (about)

     1  The `opt` package defines common high-level interfaces and classes that multiple
     2  sub-packages share. None of these definitions depend on any sub-packages, so all
     3  sub-packages can therefore depend on `opt` without causing cyclical dependencies
     4  (which Go does not allow).