Add new "requires_python" config option which maps to Requires-Python…

… in Core Metadata

repo_helper/build.py

@@ -364,7 +364,7 @@ def write_metadata(self, metadata_file: PathPlus):
 		for classifier in self.config["classifiers"]:
 			metadata["Classifier"] = classifier
 
-		metadata["Requires-Python"] = str(Specifier(f">={self.config['min_py_version']}"))
+		metadata["Requires-Python"] = str(Specifier(f">={self.config['requires_python']}"))
 		metadata["Description-Content-Type"] = "text/x-rst"
 
 		for requirement in sorted(combine_requirements(read_requirements(self.repo_dir / "requirements.txt")[0])):

repo_helper/configuration/__init__.py

@@ -128,6 +128,7 @@
 		default_python_versions,
 		python_deploy_version,
 		python_versions,
+		requires_python,
 		third_party_version_matrix
 		)
 from repo_helper.configuration.testing import (
@@ -201,6 +202,7 @@
 		"pypi_name",
 		"python_deploy_version",
 		"python_versions",
+		"requires_python",
 		"repo_name",
 		"rtfd_author",
 		"setup_pre",
@@ -326,6 +328,13 @@ def custom_parsing(
 		# Python Versions
 		versions = no_dev_versions(parsed_config_vars["python_versions"])
 		parsed_config_vars["min_py_version"] = min_py_version = versions[0]
+
+		if parsed_config_vars["requires_python"] is None:
+			if min_py_version in {"3.6", 3.6}:
+				parsed_config_vars["requires_python"] = "3.6.1"
+			else:
+				parsed_config_vars["requires_python"] = min_py_version
+
 		smallest_py_version = Version.from_str(min_py_version)
 		for py_version in versions:
 			try:

repo_helper/configuration/python_versions_.py

@@ -28,8 +28,16 @@
 
 # 3rd party
 from configconfig.configvar import ConfigVar
+from configconfig.utils import RawConfigVarsType
+from natsort import natsorted
 
-__all__ = ["python_deploy_version", "default_python_versions", "python_versions", "third_party_version_matrix"]
+__all__ = [
+		"python_deploy_version",
+		"requires_python",
+		"default_python_versions",
+		"python_versions",
+		"third_party_version_matrix"
+		]
 
 
 class python_deploy_version(ConfigVar):  # noqa
@@ -49,6 +57,32 @@ class python_deploy_version(ConfigVar):  # noqa
 	category: str = "python versions"
 
 
+class requires_python(ConfigVar):  # noqa
+	"""
+	The minimum required version of Python.
+
+	Example:
+
+	.. code-block:: yaml
+
+		requires_python: 3.6.1
+
+	.. versionadded:: $VERSION
+	"""
+
+	dtype = Union[str, float]
+	rtype = str
+	default = None
+	category: str = "python versions"
+
+	@classmethod
+	def validate(cls, raw_config_vars: Optional[RawConfigVarsType] = None) -> Any:
+		if cls.__name__ in raw_config_vars:
+			return super().validate(raw_config_vars)
+		else:
+			return None
+
+
 def default_python_versions(raw_config_vars: Optional[Dict[str, Any]]) -> List[str]:
 	"""
 	Function to return the default value for :conf:`python_versions`.
@@ -81,7 +115,7 @@ class python_versions(ConfigVar):  # noqa
 
 	@classmethod
 	def validator(cls, value: Iterable[str]) -> List[str]:  # noqa: D102
-		return [str(ver) for ver in value if ver]
+		return natsorted(str(ver) for ver in value if ver)
 
 
 class third_party_version_matrix(ConfigVar):  # noqa

repo_helper/files/packaging.py

@@ -245,12 +245,7 @@ def options(self):
 		``[options]``.
 		"""
 
-		if self["min_py_version"] in {"3.6", 3.6}:
-			min_py_version = "3.6.1"
-		else:
-			min_py_version = self["min_py_version"]
-
-		self._ini["options"]["python_requires"] = f">={min_py_version}"
+		self._ini["options"]["python_requires"] = f">={self['requires_python']}"
 		self._ini["options"]["zip_safe"] = False
 		self._ini["options"]["include_package_data"] = True
 		if self["stubs_package"]:

repo_helper/repo_helper_schema.json

@@ -320,6 +320,13 @@
       "type": "string",
       "description": "The name of GitHub repository, if different to :conf:`modname`."
     },
+    "requires_python": {
+      "type": [
+        "string",
+        "number"
+      ],
+      "description": "The minimum required version of Python."
+    },
     "rtfd_author": {
       "type": "string",
       "description": "The name of the author to show on ReadTheDocs, if different."

repo_helper/testing/__init__.py

@@ -119,6 +119,7 @@ def demo_environment() -> jinja2.Environment:
 			"short_desc": "a short description",
 			"on_pypi": true,
 			"docs_fail_on_warning": false,
+			"requires_python": "3.6.1",
 			"third_party_version_matrix": {}
 			}
 
@@ -152,6 +153,7 @@ def test(demo_environment):
 					enable_conda=True,
 					enable_releases=True,
 					python_deploy_version="3.6",
+					requires_python="3.6.1",
 					min_py_version="3.6",
 					modname="hello-world",
 					repo_name="hello-world",

tests/test_cli/test_builder_/test_write_metadata

@@ -26,7 +26,7 @@ Classifier: Programming Language :: Python :: 3.7
 Classifier: Programming Language :: Python :: 3.8
 Classifier: Programming Language :: Python :: Implementation :: CPython
 Classifier: Topic :: Utilities
-Requires-Python: >=3.6
+Requires-Python: >=3.6.1
 Description-Content-Type: text/x-rst
 Requires-Dist: alabaster>=0.7.12
 Requires-Dist: autodocsumm>=0.2.0

tests/test_configuration_/test_parse_yaml.yml

@@ -88,6 +88,7 @@ python_versions:
 - '3.8'
 - 3.9-dev
 repo_name: repo_helper_demo
+requires_python: 3.6.1
 rtfd_author: Dominic Davis-Foster
 setup_pre: []
 short_desc: Update multiple configuration files, build scripts etc. from a single