Plugin architecture with embedded Python and dependencies

We’re developing a new plugin architecture for our Windows desktop application that uses the embedded Python distribution. It looks as though pip isn’t supported.

What then is the common way for plugin developers to distribute their plugins including dependencies if it’s not using pip to install the plugin and its dependencies? Our plugins are designed for systems integration, which means plugins need access to specific packages for their integration. We dont want to include them with our distribution as it requires another release every time a new package requirement is identified and increases the installer size.

Our plan was the install plugins as wheels using pip, but if this isn’t supported what is the recommended plugin architecture with Python when plugins require third party packages?