Delphi support in Oxygene

I can’t get importing and building to work with the shipped source Island.DelphiSupport or with the GitHub source. Importing seems fine until the build phase which on current preview build and current GitHub source fail due to source code errors in Extensions.pas. A missing semi colon and, I think a missing proper reference for a TProc call.
Other than that it fails due to “Reference ‘Delphi.rtl’ could not be resolved for target ‘Delphi.12.macOS’ (Island Darwin x86_64).” and that failure seems to cause the whole thing not to complete properly. As such there are no references added to Island reference list.
I tried some manual manipulations and managed some requisite .fx files but Delphi does not compile or look like compiling.
I wondered it may be because I was using a Community version of Delphi but the errors point to something else.
Should it work?