Fix Windows wheel smoke test venv usage

newsfragments/3852.internal.rst

@@ -0,0 +1 @@
+Tighten the Windows wheel release smoke test so the temporary virtualenv activation, wheel install, and import check run in the same shell session.

web3/scripts/release/test_windows_wheel_install.sh

@@ -1,12 +1,26 @@
 #!/bin/bash
 
+set -euo pipefail
+
 python --version
-bash.exe -c "set -e"
-bash.exe -c "rm -rf build dist"
+rm -rf build dist
 python -m build
-bash.exe -c "export temp_dir=$(mktemp -d)"
-cd $temp_dir
+
+temp_dir=$(mktemp -d)
+cd "$temp_dir"
 python -m venv venv-test
-bash.exe -c "source venv-test/Scripts/activate"
-bash.exe -c 'python -m pip install --upgrade "$(ls /c/Users/circleci/project/web3.py/dist/web3-*-py3-none-any.whl)" --progress-bar off'
-python -c "from web3 import Web3"
+source venv-test/Scripts/activate
+python -m pip install --upgrade "$(ls /c/Users/circleci/project/web3.py/dist/web3-*-py3-none-any.whl)" --progress-bar off
+python - <<'PY'
+import sys
+from pathlib import Path
+
+from web3 import Web3
+import web3
+
+python_path = str(Path(sys.executable)).replace('\\', '/')
+web3_path = str(Path(web3.__file__)).replace('\\', '/')
+assert 'venv-test' in python_path, python_path
+assert 'venv-test' in web3_path, web3_path
+assert Web3 is not None
+PY