Clashes between definition names

[gilesknap]

We can't build a global schema of all support yaml if two support yaml share a definition name. That is even though the module name is different.

This is perhaps not a real problem, except that we do this in the CI tests to make sure all submitted yaml is good.

This limitation makes the module a little brittle.

e.g.

generating all support schema
+ ibek ioc generate-schema /home/runner/work/ibek-support/ibek-support/tests/../ADAravis/ADAravis.ibek.support.yaml /home/runner/work/ibek-support/ibek-support/tests/../ADCore-slim/ADCore.ibek.support.yaml /home/runner/work/ibek-support/ibek-support/tests/../ADCore/ADCore.ibek.support.yaml /home/runner/work/ibek-support/ibek-support/tests/../ADSample/ADSimDetector.ibek.support.yaml /home/runner/work/ibek-support/ibek-support/tests/../ADSimDetector/ADSimDetector.ibek.support.yaml /home/runner/work/ibek-support/ibek-support/tests/../_global/epics.ibek.support.yaml /home/runner/work/ibek-support/ibek-support/tests/../asyn/asyn.ibek.support.yaml /home/runner/work/ibek-support/ibek-support/tests/../autosave/autosave.ibek.support.yaml /home/runner/work/ibek-support/ibek-support/tests/../iocStats/iocStats.ibek.support.yaml /home/runner/work/ibek-support/ibek-support/tests/../modbus/modbus.ibek.support.yaml /home/runner/work/ibek-support/ibek-support/tests/../motor/motor.ibek.support.yaml /home/runner/work/ibek-support/ibek-support/tests/../motorMotorSim/motorMotorSim.ibek.support.yaml /home/runner/work/ibek-support/ibek-support/tests/../pmac/pmac.ibek.support.yaml /home/runner/work/ibek-support/ibek-support/tests/../zebra/zebra.ibek.support.yaml --no-ibek-defs --output /tmp/all.ibek.ioc.schema.json
Traceback (most recent call last):

  File "/home/runner/.local/bin/ibek", line 8, in <module>
    sys.exit(cli())

  File "/home/runner/.local/lib/python3.10/site-packages/ibek/ioc_cmds/commands.py", line 72, in generate_schema
    ioc_model = ioc_create_model(definitions)

  File "/home/runner/.local/lib/python3.10/site-packages/ibek/gen_scripts.py", line 45, in ioc_create_model
    model = make_ioc_model(entity_models)

  File "/home/runner/.local/lib/python3.10/site-packages/ibek/ioc.py", line 178, in make_ioc_model
    class NewIOC(IOC):

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_model_construction.py", line 182, in __new__
    complete_model_class(

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_model_construction.py", line 501, in complete_model_class
    schema = gen_schema.clean_schema(schema)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_generate_schema.py", line 405, in clean_schema
    schema = _discriminated_union.apply_discriminators(schema)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 60, in apply_discriminators
    return simplify_schema_references(_core_utils.walk_core_schema(schema, inner))

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 431, in walk_core_schema
    return f(schema.copy(), _dispatch)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 48, in inner
    s = recurse(s, inner)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 207, in walk
    return f(schema, self._walk)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 48, in inner
    s = recurse(s, inner)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 210, in _walk
    schema = self._schema_type_to_method[schema['type']](schema.copy(), f)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 240, in handle_definitions_schema
    new_inner_schema = self.walk(schema['schema'], f)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 207, in walk
    return f(schema, self._walk)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 48, in inner
    s = recurse(s, inner)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 210, in _walk
    schema = self._schema_type_to_method[schema['type']](schema.copy(), f)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 219, in _handle_other_schemas
    schema['schema'] = self.walk(sub_schema, f)  # type: ignore

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 207, in walk
    return f(schema, self._walk)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 48, in inner
    s = recurse(s, inner)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 210, in _walk
    schema = self._schema_type_to_method[schema['type']](schema.copy(), f)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 354, in handle_model_fields_schema
    replaced_field['schema'] = self.walk(v['schema'], f)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 207, in walk
    return f(schema, self._walk)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 48, in inner
    s = recurse(s, inner)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 210, in _walk
    schema = self._schema_type_to_method[schema['type']](schema.copy(), f)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 336, in handle_json_or_python_schema
    schema['json_schema'] = self.walk(schema['json_schema'], f)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 207, in walk
    return f(schema, self._walk)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 48, in inner
    s = recurse(s, inner)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 210, in _walk
    schema = self._schema_type_to_method[schema['type']](schema.copy(), f)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 254, in handle_list_schema
    schema['items_schema'] = self.walk(items_schema, f)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_core_utils.py", line 207, in walk
    return f(schema, self._walk)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 57, in inner
    s = apply_discriminator(s, discriminator, definitions)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 99, in apply_discriminator
    return _ApplyInferredDiscriminator(discriminator, definitions or {}).apply(schema)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 194, in apply
    schema = self._apply_to_root(schema)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 234, in _apply_to_root
    self._handle_choice(choice)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 285, in _handle_choice
    self._handle_choice(self.definitions[choice['schema_ref']])

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 309, in _handle_choice
    self._set_unique_choice_for_values(choice, inferred_discriminator_values)

  File "/home/runner/.local/lib/python3.10/site-packages/pydantic/_internal/_discriminated_union.py", line 504, in _set_unique_choice_for_values
    raise TypeError(

TypeError: Value 'ADSimDetector.simDetector' for discriminator 'type' mapped to multiple choices

Error: Process completed with exit code 1.