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@@ -372,6 +372,12 @@ class SchemaSolver:
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def handle_link_to_constant_output(self, frame_mantis_nodes, index, ui_link, to_ui_node):
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to_node = self.schema_nodes[(*self.tree_path_names, to_ui_node.bl_idname)]
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expose_when = to_node.evaluate_input('Expose when N==')
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+ # this will be None for nested Groups that have ordinary Group Input and Group Output nodes.
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+ # and in that case we just do it no matter what
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+ if expose_when is not None and expose_when > self.solve_length-1:
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+ raise GraphError(f"The Schema has a constant output at index {expose_when}"
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+ f" but it terminates at index {self.solve_length-1}. "
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+ f"The Schema must have a length of at least {expose_when+1}.")
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from_name = get_link_in_out(ui_link)[0]
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from bpy.types import NodeSocket
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#use it directly if it is a mantis node; this happens when the previous node was a Schema
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@@ -387,7 +393,7 @@ class SchemaSolver:
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from_socket_name = ui_link.from_socket.name
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# HACK here to force it to work with ordinary node groups, which don't seem to set this value correctly.
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if to_ui_node.bl_idname == "NodeGroupOutput":
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- expose_when = index # just set it directly since it is getting set to None somewhere (I should find out where tho)
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+ expose_when = index # the expose-when value is None because the GroupOutput doesn't have the socket.
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# end HACK
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if index == expose_when:
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for outgoing in self.constant_out[ui_link.to_socket.name]:
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