Make grpclib optional (#67)

* Make grpclib optional

* Update CI

* Add all extra

* Update documentation

Author: AdrienVannson

.github/workflows/ci.yml

@@ -54,7 +54,7 @@ jobs:
 
       - name: Install dependencies
         shell: bash
-        run: poetry install
+        run: poetry install -E grpc-async
 
       - name: Download compiled test files
         shell: bash
@@ -66,7 +66,7 @@ jobs:
 
       - name: Install dependencies with the Rust codec
         shell: bash
-        run: poetry install -E rust-codec
+        run: poetry install -E grpc-async -E rust-codec
 
       - name: Execute test suite with the Rust codec
         shell: bash

docs/getting-started.md

@@ -6,7 +6,7 @@ Getting Started
 The package `betterproto2` can be simply installed from PyPI using `pip`:
 
 ```sh
-pip install betterproto2
+pip install betterproto2[all]
 ```
 
 !!! info

poetry.lock

@@ -18,14 +18,16 @@ Repository = "https://github.com/betterproto/python-betterproto2"
 
 [project.optional-dependencies]
 rust-codec = ["betterproto2-rust-codec"]
+grpc-async = ["grpclib"]
+all = ["betterproto2-rust-codec", "grpclib"]
 
 [tool.poetry]
 packages = [
     { include = "betterproto2", from = "src" }
 ]
 
 [tool.poetry.dependencies]
-grpclib = "^0.4.1"
+grpclib = { version = "^0.4.1", optional = true }
 python-dateutil = "^2.8"
 typing-extensions = "^4.7.1"
 betterproto2-rust-codec = { version = "^0.1.2", optional = true }