Resolve python version to work with compatible operator (#446)

* Resolve python version to work with compatible operator

* Fix version specifier resolution

* Format

* Test virtual environment Python version

Use uv in CI

Fix python version of created environment in tests

Pipenv should create its own virtualenv

Remove sys import

Remove extraneous parenthesis

Fix wrong input to configs product

Fix virtualenvwrapper to set Python version instead of Python interpreter

Install Python executables into PATH

* Revert "Test virtual environment Python version"

This reverts commit f16bcc7.

---------

Co-authored-by: Jay Qi <jayqi@users.noreply.github.com>

Author: r-b-g-b

ccds/hook_utils/dependencies.py

@@ -30,6 +30,49 @@
 ]
 
 
+def resolve_python_version_specifier(python_version):
+    """Resolves the user-provided Python version string to a version specifier.
+
+    Examples:
+
+    User provides: 3.12
+    Resolved version specifier: ~=3.12.0
+    Compatible versions: 3.12.0, 3.12.1, 3.12.2, etc.
+
+    User provides: 3.12.2
+    Resolved version specifier: ==3.12.2
+    Compatible versions: 3.12.2
+
+    See https://packaging.python.org/en/latest/specifications/version-specifiers/#compatible-release
+    """
+    version_parts = python_version.split(".")
+    if len(version_parts) == 2:
+        major, minor = version_parts
+        patch = "0"
+        operator = "~="
+    elif len(version_parts) == 3:
+        major, minor, patch = version_parts
+        operator = "=="
+    else:
+        raise ValueError(
+            f"Invalid Python version specifier {python_version}. "
+            "Please specify version as <major>.<minor> or <major>.<minor>.<patch>, "
+            "e.g., 3.10, 3.10.1, etc."
+        )
+
+    resolved_python_version = ".".join((major, minor, patch))
+    return f"{operator}{resolved_python_version}"
+
+
+def write_python_version(python_version):
+    with open("pyproject.toml", "r") as f:
+        doc = tomlkit.parse(f.read())
+
+    doc["project"]["requires-python"] = resolve_python_version_specifier(python_version)
+    with open("pyproject.toml", "w") as f:
+        f.write(tomlkit.dumps(doc))
+
+
 def write_dependencies(
     dependencies, packages, pip_only_packages, repo_name, module_name, python_version
 ):

hooks/post_gen_project.py

@@ -12,6 +12,7 @@
     ruff,
     scaffold,
     write_dependencies,
+    write_python_version,
 )
 
 #
@@ -72,6 +73,8 @@
     python_version="{{ cookiecutter.python_version_number }}",
 )
 
+write_python_version("{{ cookiecutter.python_version_number }}")
+
 write_custom_config("{{ cookiecutter.custom_config }}")
 
 # Remove LICENSE if "No license file"

{{ cookiecutter.repo_name }}/pyproject.toml

@@ -15,7 +15,6 @@ classifiers = [
     "Programming Language :: Python :: 3",
     {% if cookiecutter.open_source_license == 'MIT' %}"License :: OSI Approved :: MIT License"{% elif cookiecutter.open_source_license == 'BSD-3-Clause' %}"License :: OSI Approved :: BSD License"{% endif %}
 ]
-requires-python = "~={{ cookiecutter.python_version_number }}"
 {% if cookiecutter.linting_and_formatting == 'flake8+black+isort' %}
 [tool.black]
 line-length = 99