Valid conjure definition results in circular python import

[ahggns]

What happened?

I modified the https://github.com/palantir/conjure-java-example to introduce a circular dependency between packages:

--- a/recipe-example-api/src/main/conjure/recipe-example-api.yml
+++ b/recipe-example-api/src/main/conjure/recipe-example-api.yml
@@ -14,6 +14,7 @@ types:
         alias: string

       BakeStep:
+        package: com.palantir.conjure.examples.recipe.api.step
         fields:
           temperature: Temperature
           durationInSeconds: integer

This causes two python packages to be created (expected):
conjure_examples_recipe_api:

from ..conjure_examples_recipe_api_step import BakeStep
from abc import ABCMeta, abstractmethod
from conjure_python_client import ConjureBeanType, ConjureDecoder, ConjureEncoder, ConjureEnumType, ConjureFieldDefinition, ConjureUnionType, ListType, Service
from typing import List, Set

class Recipe(ConjureBeanType):
[...]

conjure_examples_recipe_api_step:

from ..conjure_examples_recipe_api import Temperature
from conjure_python_client import ConjureBeanType, ConjureFieldDefinition

class BakeStep(ConjureBeanType):
[...]

This python code cannot be imported due to the circular dependency:

>>> import sys
>>> sys.path.append("/src/ahiggins/conjure-java-example/recipe-example-api/recipe-example-api-python/python/")
>>> from recipe_example_api.conjure_examples_recipe_api import Temperature

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-428f65a0c05a> in <module>
      1 import sys, os
      2 sys.path.append("/src/ahiggins/conjure-java-example/recipe-example-api/recipe-example-api-python/python/")
----> 3 from recipe_example_api.conjure_examples_recipe_api import Temperature

/src/ahiggins/conjure-java-example/recipe-example-api/recipe-example-api-python/python/recipe_example_api/conjure_examples_recipe_api/__init__.py in <module>
----> 1 from ..conjure_examples_recipe_api_step import BakeStep
      2 from abc import ABCMeta, abstractmethod
      3 from conjure_python_client import ConjureBeanType, ConjureDecoder, ConjureEncoder, ConjureEnumType, ConjureFieldDefinition, ConjureUnionType, ListType, Service
      4 from typing import List, Set
      5 

/src/ahiggins/conjure-java-example/recipe-example-api/recipe-example-api-python/python/recipe_example_api/conjure_examples_recipe_api_step/__init__.py in <module>
----> 1 from ..conjure_examples_recipe_api import Temperature
      2 from conjure_python_client import ConjureBeanType, ConjureFieldDefinition
      3 
      4 class BakeStep(ConjureBeanType):
      5 

ImportError: cannot import name 'Temperature'