python example not working about rules_protobuf HOT 3 CLOSED

Hi @drtechniko thanks for trying this out. I've been looking for a solution to pull in python dependencies from pypi within bazel. There is not an existing solution yet, but @yugui is making good headway with https://github.com/gengo/rules_pypi.

My experiments with this so far show that it is possible to pull in the grpcio python dependency with rules_pypi, but I have to hack the source to not disable platform-specific compilation, and even then I'm getting import errors related to cython or something like that. Bottom line: not working yet.

The workaround is that you have to pip install grpcio on your local python install to make it globally available. Also, there were a few bugs in my example that have hopefully been fixed with 342e241. If you upgrade to this version I'd be interested to hear your results.

Note that rules_protobuf is not testing the examples/helloworld/python rules in travis due to it's experimental nature.

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Note that experimental support for rules_pypi is on that branch (not yet functional): https://github.com/pubref/rules_protobuf/tree/rules_pypi

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Thank you. Unfortunately I didn't get notified for some reason by github that you updated the ticket so I spent today to work around this to get moving in building my code using setup.py to generate protobufs. I also spent many hours using the gengo/rules_pypi to install grpcio. But I had no luck. They were also not working for me due to compilation errors in Python.h (tried it on a Docker from scratch to make sure my local env was not corrupted). I'm going to give this a shot again tomorrow with your new commit and see how it works. I can survive with having to install grpcio manually for now.

Also, I'm new to Bazel but I'd like to contribute PRs to the project. I expect our teams to use grpc with python extensively. If you have any suggestions on where to get started let me know.

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