Get mypy passing under Windows (#58)

Closes #56

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         os: ["ubuntu", "macos", "windows"]
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@v3
@@ -20,7 +20,10 @@ jobs:
   # Set up as a separate job for a very small amount of parallelism and to
   # avoid running multiple times under each OS like we do for testing.
   lint:
-    runs-on: "ubuntu-latest"
+    runs-on: ${{ matrix.os }}-latest
+    strategy:
+      matrix:
+        os: ["ubuntu", "windows"]  # Due to having different APIs.
 
     steps:
       - uses: actions/checkout@v3

microvenv/__main__.py

@@ -1,10 +1,10 @@
 import sys
 
-if sys.platform == "win32":
-    print("Microvenv's CLI is not supported on Windows", file=sys.stderr)
-    sys.exit(1)
-
 from ._create import main
 
 if __name__ == "__main__":
+    if sys.platform == "win32":
+        print("Microvenv's CLI is not supported on Windows", file=sys.stderr)
+        sys.exit(1)
+
     main()

microvenv/_create.pyi

@@ -1,11 +1,9 @@
 from os import PathLike
-import sys
 from typing import Iterable
 
 DEFAULT_ENV_DIR: str
 
-if sys.platform != "win32":
-    def create(
-        env_dir: str | PathLike[str] = ..., *, scm_ignore_files=Iterable[str]
-    ) -> None: ...
-    def main() -> None: ...
+def create(
+    env_dir: str | PathLike[str] = ..., *, scm_ignore_files=Iterable[str]
+) -> None: ...
+def main() -> None: ...

pyproject.toml

@@ -5,14 +5,14 @@ build-backend = "hatchling.build"
 
 [project]
 name = "microvenv"
-version = "2023.4"
+version = "2023.5"
 description = "A minimal re-implementation of Python's venv module plus utilities"
 keywords = ["virtual environments", "venv"]
 readme = "README.md"
 license = { file = "LICENSE" }
 maintainers = [{ name = "Brett Cannon", email = "[email protected]" }]
 authors = [{ name = "Brett Cannon", email = "[email protected]" }]
-requires-python = ">=3.7"
+requires-python = ">=3.8"
 classifiers = [
   "Development Status :: 4 - Beta",
   "License :: OSI Approved :: MIT License",

tests/conftest.py

@@ -14,6 +14,9 @@ def executable():
 @pytest.fixture(scope="session")
 def full_venv(tmp_path_factory):
     """Create a virtual environment via venv."""
+    symlinks = sys.platform != "win32"
     venv_path = tmp_path_factory.mktemp("venvs") / "full_venv"
-    venv.create(venv_path, symlinks=True, with_pip=False, system_site_packages=False)
+    venv.create(
+        venv_path, symlinks=symlinks, with_pip=False, system_site_packages=False
+    )
     return venv_path