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Since Google AppEngine 2.7 doesn't allow for 3rd party libraries using C lib extensions, I've been looking for alternatives to set up a backend simliar to what is shown in the repo: https://github.com/jpf/okta-pysaml2-example. It is basically saml for python that will run alongside my GAE standard environment.

Google cloud functions seems to almost be a great fit but I don't see a way to install Brew dependencies. Is this not possible?

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It's not possible to install system-level dependencies for Cloud Functions or the App Engine Standard environments (2.7 or 3.7).

Instead, you'll need to create an App Engine Flex custom runtime, and manually define a Dockerfile which installs the dependencies, with a line something like this:

RUN apt-get install libffi-dev libxmlsec1 libssl-dev

Also note that the App Engine platform is Ubuntu, so you would use the apt package manager, not brew (which is for macOS).

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thank you, i have done just this and it turned out to be pretty easy

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