The Eclipse plugin uses an overridden Java backend compiler (in order to reuse the already typechecked model), and the changes made in the Java backend to support annotation processing rounds also required some changes in the eclipse Plugin / Java backend integration.
So currently annotation processors don't work correctly in the Eclipse plugin on Ceylon projects.
davidfestal
commented
7 years ago
The Eclipse plugin uses an overridden Java backend compiler (in order to reuse the already typechecked model), and the changes made in the Java backend to support annotation processing rounds also required some changes in the eclipse Plugin / Java backend integration. So currently annotation processors don't work correctly in the Eclipse plugin on Ceylon projects.