Account for if a permitted model is None

.github/workflows/gha_workflow_llama_stack_tests.yml

@@ -1,9 +1,6 @@
 name: "Run Llama-stack Tests"
 
 on:
-  push:
-    branches:
-      - 'main'
   pull_request_target:
     types: ["opened"]
     branches:

llama_stack/providers/inline/inference/meta_reference/config.py

@@ -37,8 +37,8 @@ class MetaReferenceInferenceConfig(BaseModel):
     @classmethod
     def validate_model(cls, model: str) -> str:
         permitted_models = supported_inference_models()
-        descriptors = [m.descriptor() for m in permitted_models]
-        repos = [m.huggingface_repo for m in permitted_models]
+        descriptors = [m.descriptor() for m in permitted_models if m is not None]
+        repos = [m.huggingface_repo for m in permitted_models if m is not None]
         if model not in (descriptors + repos):
             model_list = "\n\t".join(repos)
             raise ValueError(

llama_stack/providers/inline/inference/vllm/config.py

@@ -49,8 +49,8 @@ class VLLMConfig(BaseModel):
     def validate_model(cls, model: str) -> str:
         permitted_models = supported_inference_models()
 
-        descriptors = [m.descriptor() for m in permitted_models]
-        repos = [m.huggingface_repo for m in permitted_models]
+        descriptors = [m.descriptor() for m in permitted_models if m is not None] 
+        repos = [m.huggingface_repo for m in permitted_models if m is not None]
         if model not in (descriptors + repos):
             model_list = "\n\t".join(repos)
             raise ValueError(

llama_stack/providers/utils/inference/prompt_adapter.py

@@ -179,7 +179,7 @@ def chat_completion_request_to_messages(
         return request.messages
 
     allowed_models = supported_inference_models()
-    descriptors = [m.descriptor() for m in allowed_models]
+    descriptors = [m.descriptor() for m in allowed_models if m is not None]
     if model.descriptor() not in descriptors:
         cprint(f"Unsupported inference model? {model.descriptor()}", color="red")
         return request.messages