Basic answer is no. K2 marks all binaries as pre-release, which means that they can be used as dependencies only in pre-release project (this behavior is needed because we can not guarantee that ABI produced by K2 won't changed before release)
But if you want to compile some internal library/subproject and don't care about ABI changes (e.g. because all consumers of this lib are compiled together with lib itself) you can add
-Xallow-unstable-dependencies
to arguments of your application