The last release of Contextual had problems with embedding typed values into interpolated strings, so we've created a new release, v3.0.0 that's now available on Maven Central, and has been verified as "working" on Scala 2.12 and 2.13.https://github.com/propensive/contextual …
This will unblock a few other Propensive libraries which depend on Contextual, so you can expect new releases of these for Scala 2.13 i.n the coming days..