No way to configure corporate pip index URL for environment creation / package install UI on Windows

[chirag127]

Environment

• OS: Windows 11 Enterprise
• VS Code: 1.104.x
• Python Environments extension: latest (1.20.x)
• Python: 3.11 / 3.12
• Package manager: pip / uv
• Network: corporate network with private PyPI mirror (--index-url https://pypi.corp/simple) and strict --no-default-index policy (public pypi.org blocked)

Problem

The extension's "Create Environment" and "Install Package" UI invokes pip install / uv pip install without respecting a configured --index-url or --extra-index-url. On corporate machines where pypi.org is blocked:

1. Creating a new venv via the extension's GUI picker succeeds, but any package the extension auto-installs (e.g., pip upgrade, wheel) fails silently.
2. The "Packages" panel's "Install" button runs pip install <pkg> against pypi.org — always fails.
3. There is no python-envs.pip.indexUrl or equivalent setting to redirect to the internal mirror.

Expected

Expose a setting:

"python-envs.packageManager.extraArgs": ["--index-url", "https://pypi.corp/simple", "--trusted-host", "pypi.corp"]

that is appended to every pip install / uv pip install invocation the extension makes on behalf of the user.

Alternatively: the extension should inherit pip.ini / pip.conf if already set in the system (pip already supports this), and the README should document that %APPDATA%\pip\pip.ini is the right place to set [global] index-url for the extension to pick up.

Workaround

Setting [global] index-url in %APPDATA%\pip\pip.ini works for terminal invocations but the extension appears to spawn pip in a way that may not pick up user-level pip.ini on Windows (path resolution differs for subprocess vs terminal shell).