Whether the public-law appeal was admissible despite the immigration nature of the permit revocation and the procedural inadmissibility ruling below.
The appeal was in principle admissible because the case originated from the revocation of a permit that would otherwise still have legal effect.
Although Art. 83 let. c no. 2 LTF excludes many immigration cases, that exclusion does not apply when the proceeding concerns the revocation of an authorization still producing legal effects.