build: use pep621 pyproject.toml (#372)

[PEP 621](https://peps.python.org/pep-0621) provides a standardised way for storing project metadata including dependencies declaratively in  pyproject.toml, instead of setup.py which is very dynamic. PEP 621 is now [supported by setuptools](https://setuptools.pypa.io/en/latest/userguide/pyproject_config.html).

This PR uses project settings in pyproject.toml to configure setuptools to build the sdist and wheel.

The built distribution is the same, except the PKG-INFO now includes classifies, keywords, and the full text of the license.

NB: pyproject.toml dependencies are not yet supported by renovatebot (see [#10187](renovatebot/renovate#10187)) or dependabot (see [#3290](dependabot/dependabot-core#3290))

MANIFEST.in

@@ -1,3 +1 @@
-# needed by setup.py
-include README.md
 recursive-include src/aec/config-example *.toml *.yaml

Makefile

@@ -17,7 +17,7 @@ $(pip):
 	$(venv)/bin/python --version
 	$(pip) install pip~=22.1
 
-$(venv): setup.py $(pip)
+$(venv): pyproject.toml $(pip)
 	$(pip) install -e '.[dev]'
 	touch $(venv)
 

pyproject.toml

@@ -1,8 +1,53 @@
-# use PyCharm default line length of 120
+[project]
+name = "aec-cli"
+description = "AWS EC2 CLI"
+dynamic = ["version"]
+readme = "README.md"
+license = { file = "LICENSE" }
+keywords = ["AWS", "EC2", "command line", "cli"]
+classifiers = ["License :: OSI Approved :: MIT License"]
+requires-python = ">=3.6"
+dependencies = [
+    "boto3==1.24.1",
+    "importlib_resources==5.7.1",
+    "pytoml==0.1.21",
+    "pytz==2022.1",
+    "rich==12.4.4",
+    "typing_extensions==4.2.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "black==22.3.0",
+    "build~=0.7",
+    "boto3-stubs[ec2,compute-optimizer,ssm,s3]==1.21.27",
+    "cogapp~=3.3",
+    "darglint==1.8.1",
+    "isort==5.10.1",
+    "flake8==4.0.1",
+    "flake8-annotations~=2.9",
+    "flake8-colors==0.1.9",
+    "moto[ec2]==3.1.11",
+    "pre-commit~=2.19",
+    "pyfakefs==4.5.6",
+    "pytest~=7.1",
+    "pytest-mock==3.7.0",
+    "twine~=4.0",
+]
+
+[project.scripts]
+aec = "aec.main:main"
+
+[project.urls]
+homepage = "https://github.com/seek-oss/aec"
 
 [build-system]
 requires = ["setuptools", "wheel"]
 
+[tool.setuptools.dynamic]
+version = { attr = "aec.__version__" }
+
+# use PyCharm default line length of 120
 [tool.black]
 line-length = 120
 
@@ -11,4 +56,4 @@ line-length = 120
 line_length = 120
 multi_line_output = 3
 include_trailing_comma = true
-skip = [ ".tox", "dist", "node_modules" , ".venv", "build", ".git", "typings"]
+skip = [".tox", "dist", "node_modules", ".venv", "build", ".git", "typings"]

setup.py

@@ -1,49 +1,4 @@
-from pathlib import Path
+# minimal setup.py so pip install -e works
+from setuptools import setup
 
-from setuptools import find_packages, setup
-
-import src.aec as aec
-
-long_description = Path("README.md").read_text()
-
-setup(
-    name="aec-cli",
-    version=aec.__version__,
-    description="AWS EC2 CLI",
-    long_description=long_description,
-    long_description_content_type="text/markdown",
-    url="https://github.com/seek-oss/aec",
-    license="MIT",
-    entry_points={"console_scripts": ["aec = aec.main:main"]},
-    python_requires=">=3.6",
-    packages=find_packages(where="src"),
-    package_dir={"": "src"},
-    include_package_data=True,
-    install_requires=[
-        "boto3==1.24.1",
-        "importlib_resources==5.7.1",
-        "pytoml==0.1.21",
-        "pytz==2022.1",
-        "rich==12.4.4",
-        "typing_extensions==4.2.0",
-    ],
-    extras_require={
-        "dev": [
-            "black==22.3.0",
-            "build~=0.7",
-            "boto3-stubs[ec2,compute-optimizer,ssm,s3]==1.21.27",
-            "cogapp~=3.3",
-            "darglint==1.8.1",
-            "isort==5.10.1",
-            "flake8==4.0.1",
-            "flake8-annotations~=2.9",
-            "flake8-colors==0.1.9",
-            "moto[ec2]==3.1.11",
-            "pre-commit~=2.19",
-            "pyfakefs==4.5.6",
-            "pytest~=7.1",
-            "pytest-mock==3.7.0",
-            "twine~=4.0",
-        ]
-    },
-)
+setup()

src/aec/__init__.py

@@ -1 +1 @@
-__version__ = "2.5.3"
+__version__ = "2.5.4"