Migrate to PEP 517 build system (#746)

- all remaining setuptools configuration is moved from setup.py to setup.cfg
- description is now checked with twine rather than `setup.py check`

Split from #734, including suggestions from @webknjaz

Co-authored-by: Sviatoslav Sydorenko <wk@sydorenko.org.ua>

.github/workflows/ci.yml

@@ -83,13 +83,17 @@ jobs:
       run: |
         python -m pip install --upgrade --requirement requirements-dev.txt
 
-    - name: Install aiomysql
+    - name: Build distribution packages
       run: |
-        python -m pip install .
+        python -m build
+
+    - name: Check package description
+      run: |
+        python -m twine check --strict dist/*
 
-    - name: Check rst
+    - name: Install aiomysql
       run: |
-        python setup.py check --restructuredtext
+        python -m pip install .
 
     # this ensures our database is ready. typically by the time the preparations have completed its first start logic.
     # unfortunately we need this hacky workaround as GitHub Actions service containers can't reference data from our repo.

CHANGES.txt

@@ -23,6 +23,7 @@ To be included in 1.0.0 (unreleased)
 * Fix error packet handling for SSCursor #428
 * Required python version is now properly documented in python_requires instead of failing on setup.py execution #731
 * Add rsa extras_require depending on PyMySQL[rsa] #557
+* Migrate to PEP 517 build system #746
 
 
 0.0.22 (2021-11-14)

pyproject.toml

@@ -0,0 +1,6 @@
+[build-system]
+requires = [
+    # Essentials
+    "setuptools >= 42",
+]
+build-backend = "setuptools.build_meta"

setup.cfg

@@ -1,5 +1,6 @@
 [metadata]
 name = aiomysql
+version = attr: aiomysql.__version__
 url = https://github.com/aio-libs/aiomysql
 download_url = https://pypi.python.org/pypi/aiomysql
 project_urls =
@@ -9,6 +10,8 @@ project_urls =
   GitHub: issues = https://github.com/aio-libs/aiomysql/issues
   GitHub: discussions = https://github.com/aio-libs/aiomysql/discussions
 description = MySQL driver for asyncio.
+long_description = file: README.rst, CHANGES.txt
+long_description_content_type = text/x-rst
 author = Nikolay Novik
 author_email = nickolainovik@gmail.com
 classifiers =
@@ -38,6 +41,8 @@ platforms =
 python_requires = >=3.7
 include_package_data = True
 
+packages = find:
+
 # runtime requirements
 install_requires =
   PyMySQL>=1.0
@@ -47,3 +52,8 @@ sa =
   sqlalchemy>=1.0,<1.4
 rsa =
   PyMySQL[rsa]>=1.0
+
+[options.packages.find]
+exclude =
+  tests
+  tests.*