How do you plan to support extensions of objects in DCL? Without DCL, I have a top-level extension myExt provided by my base Gradle plugin, and some Gradle "sub" plugins adding an extension to the myExt like

myExt.feature1 {}

or

myExt.feature2 {}

. With KTS, there are generated accessors but AFAIK the DCL uses the static software type and not the dynamic extensions registered during runtime. Or should I create a new top level extension for each "sub" plugin?

As I understand, you cannot create one more top-level block in gradle.dcl and it is expected, it describes software type which specifies a type of the module As I remember it was mentioned here that some extension mechanics would be available, but not sure that it's the case on current prototype

FYI. Composability/extensibility is one of the big objectives of the upcoming EAP3 for Declarative Gradle. Once that's out (planned for February), things should become clearer.