Question juridique clé
Whether the court could consider the hearing-right complaint in a constitutional tax appeal
Solution extraite
The complaint alleging denial of the right to be heard was not admissible because that ground had to be raised by cantonal revision first.
Motifs extraits
The right to be heard is an essential procedural guarantee that could still be invoked through revision under cantonal tax law, so the cantonal decision was not final on that point.