Unrelated to Pants. Related to gRPC and

protoc

for python: How can I have protoc make this:

# Generated by the gRPC Python protocol compiler plugin. DO NOT EDIT!
"""Client and server classes corresponding to protobuf-defined services."""
import grpc
from . import rdu_pb2 as rdu__pb2  <-- Relative import!
...

instead of

# Generated by the gRPC Python protocol compiler plugin. DO NOT EDIT! 
"""Client and server classes corresponding to protobuf-defined services.""" 
import grpc 
import rdu_pb2 as rdu__pb2   <--- fails!

Have looked around on the internet and it seems most suggestions involve adding this generated protobuf folder to the $PYTHONPATH. Since I'd rather not do this I'm coming here for some advice!

Dumb idea, but could you just post-process the

protoc

output to patch in the relative import using

sed

? That's probably what I would do

I've seen this online too.

Just had to go check, in our pre-Pants repo we do the following fixups:

sed -i -E 's/^import.*_pb2/from . \0/' $app/api/*.py
sed -i -E "s/'__module__' : '/'__module__' : '$app.api./g" $app/api/*.py
touch ./$app/api/__init__.py

So both fixing imports, module names, and adding a init.py. Had completely forgotten these hacks were even necessary 😄

Okay then. I accept defeat!

Probably you seen it but there is also https://github.com/cpcloud/protoletariat

I had not yet seen it. Thanks for the recommendation.