grpc for Home Assistant

Build wheels for grpc and Home Assistant.

Manually building

A manual build can take 15 minutes to an hour

$ export ARCH=armv7
$ docker build --build-arg BUILD_FROM=homeassistant/${ARCH}-base-python:3.9-alpine3.14 --build-arg BUILD_ARCH=${ARCH} --tag grpc-builder:${ARCH} builder/

If the build was successful, the wheel files can be extracted from the resulting Docker images like so:

$ mkdir wheels
$ docker create --name grpc-builder grpc-builder:${ARCH} bash -c sleep 90000
$ docker cp "grpc-builder:/work/wheels/." wheels
$ docker rm grpc-builder

The wheels folder now contains the Python wheel.

Manual testing

This creates a new container and imports a package that depends on grpc to verify the cython imports work correctly.

# The name of the wheel file created above
$ export WHEEL=wheels/grpcio-1.43.0-cp39-cp39-linux_armv7l.whl
$ docker build --build-arg BUILD_FROM=homeassistant/${ARCH}-base-python:3.9-alpine3.14 --build-arg WHEEL=${WHEEL} --tag grpc-test:${ARCH} -f test/Dockerfile .
$ docker run grpc-test:${ARCH}
...
Package import success