[Fixed] Missing sub-PCB name resolve for pre-flights

kibot/optionable.py

@@ -280,7 +280,7 @@ class Optionable(object):
             self.variant = GS.solve_variant(self.variant)
             if self.variant._sub_pcb:
                 return self.variant._sub_pcb.name
-        return Optionable._find_global_variant()
+        return Optionable._find_global_subpcb()
 
     def expand_filename_common(self, name, parent):
         """ Expansions common to the PCB and Schematic """

kibot/pre_base.py

@@ -149,6 +149,12 @@ class BasePreFlight(Registrable):
             return self._variant.name
         return Optionable._find_global_variant_name()
 
+    def _find_subpcb(self):
+        # Preflights doesn't have a variant, but we could have one global default
+        if hasattr(self, '_variant') and self._variant and self.variant._sub_pcb:
+            return self.variant._sub_pcb.name
+        return Optionable._find_global_subpcb()
+
     def ensure_tool(self, name):
         """ Looks for a mandatory dependency """
         return GS.check_tool_dep(self._name, name, fatal=True)