OK, so I had an idea to create a dedicated resolve for the explorer api server distribution, so we don’t accidentally introduce new dependencies in the other parts of Pants. But I ran into this issue:

pants.backend.python.dependency_inference.rules.UnownedDependencyError: Pants cannot infer owners for the following imports in the target src/python/pants/backend/explorer/graphql/context.py:

  * pants.engine.explorer.RequestState (line: 12)
  * <http://strawberry.types.Info|strawberry.types.Info> (line: 9)

These imports are not in the resolve used by the target (`python-explorer`), but they were present in other resolves:

  * pants.engine.explorer.RequestState: 'python-default' from src/python/pants/engine/explorer.py

So, perhaps this way of using resolves is not a good fit for my use case here..?

Reading up a bit on resolves, it states that for a python_source, all it’s dependencies must also share the same resolve. This makes it problematic here, as there are dependencies into core Pants, which I explicitly do not want to share this resolve with…

I can understand this limitation within any given distribution, but if we cross distribution boundaries, must this restriction still apply?

Or do I simply just add my dependencies to the default resolve, and trust that they won’t end up in the “vanilla” pants distribution, as there should be no code there depending on them. If so, it would be a nice feature to be able to flag certain dependencies as banned requirements for certain dists..

Going with the latter for now, to unblock myself…

So any core python source see the requirements in the default resolve when being used by the core code, or by the new resolve when being used by the new code

Both resolves need the "core" imports, and all the core code needs to be parameterized on both resolves.

but i don’t think that you actually want multiple resolves here. this code will be mixed into Pants’ pythonpath, and so it needs to be fully compatible with that resolve

(all plugins are, but not all plugins have the benefit of living next to Pants’ resolve)