Reproduce / patch RobertCraigie/prisma-client-py#50

Setup

Install poetry and poethepoet, or refer to the pyproject.toml file for commands/dependencies.

poetry install

To get back to a clean state after generating models, run poe clean

Generate client

poe generate

produces the client at prisma_repro/client using the generate_partials_patch module

Import the prisma module with

poe run

Reproduce original issues

poe reproduce

Imports the models directly and reproduces the error.

Fixes

1. The partials.py file needs to exist in order for the partial generator to import the partially-generated client package. This is because when the partial generator executes, the client and fields modules have been generated, but not the partials module (ref). from . import x produces an ImportError, not a ModuleNotFoundError as produced by a missing from .client import *, so the catch block doesn't handle this case.
2. The client package has its own copy of partial_models_ctx and generates partials to that, so the site-packages prisma generator needs to pull from the same one. From within the partial generator, we can patch the context on the models module so they are generated to the correct location.