Enforce max_clusters is not set with VAEAAE model

When using the VAEAAE ensemble model, we need to cluster the full set of seqs,
since the mandatory following deduplication step is meaningless with multiple
clusterings of different subsets of the full sequences.

vamb/__main__.py

@@ -1613,6 +1613,17 @@ def __init__(self, args):
 class VAEAAEArguments(BinnerArguments):
     def __init__(self, args):
         super(VAEAAEArguments, self).__init__(args)
+
+        # For the VAE-AAE workflow, we must cluster the full set of sequences,
+        # else the cluster dereplication step makes no sense, as the different
+        # clusterings will contain different sets of clusters.
+        # So, enforce this here
+        if self.cluster_options.max_clusters is not None:
+            raise ValueError(
+                "When using the VAE-AAE model, `max_clusters` (option `-c`) "
+                "must not be set."
+            )
+
         self.aae_options = AAEOptions(
             nhiddens=args.nhiddens_aae,
             nlatent_z=args.nlatent_aae_z,