Fix packaging: SPDX license, drop ez_setup, ship complete test sdist (#368, #343)

MANIFEST.in

@@ -1,6 +1,6 @@
-include ez_setup.py
 include LICENSE
 include *.rst
 include requirements.txt
 include stone/target/swift_rsrc/*
 include test/requirements.txt
+recursive-include test *.py

mypy-run.sh

@@ -1,6 +1,6 @@
 #!/bin/bash -eux
 
-EXCLUDE='(^example/|^ez_setup\.py$|^setup\.py$)'
+EXCLUDE='(^example/|^setup\.py$)'
 
 # Include all Python files registered in Git, that don't occur in $EXCLUDE.
 INCLUDE=$(git ls-files "$@" | grep '\.py$' | grep -Ev "$EXCLUDE" | tr '\n' '\0' | xargs -0 | cat)

pyproject.toml

@@ -0,0 +1,5 @@
+[build-system]
+# setuptools>=77 is required for the SPDX ``license`` expression used in
+# setup.py (see PEP 639).
+requires = ["setuptools>=77"]
+build-backend = "setuptools.build_meta"

setup.py

@@ -1,16 +1,3 @@
-# Don't import unicode_literals because of a bug in py2 setuptools
-# where package_data is expected to be str and not unicode.
-
-import sys
-
-try:
-    from ez_setup import use_setuptools
-    use_setuptools()
-except ImportError:
-    # Try to use ez_setup, but if not, continue anyway. The import is known
-    # to fail when installing from a tar.gz.
-    print('Could not import ez_setup', file=sys.stderr)
-
 from setuptools import setup
 
 # WARNING: This imposes limitations on requirements.txt such that the
@@ -45,7 +32,7 @@
     author_email='kelkabany@dropbox.com',
     author='Ken Elkabany',
     description='Stone is an interface description language (IDL) for APIs.',
-    license='MIT License',
+    license_expression='MIT',
     long_description=README,
     long_description_content_type='text/x-rst',
     maintainer_email='api-platform@dropbox.com',
@@ -54,7 +41,6 @@
     classifiers=[
         'Development Status :: 5 - Production/Stable',
         'Intended Audience :: Developers',
-        'License :: OSI Approved :: MIT License',
         'Operating System :: OS Independent',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.11',