Hi. Are the options available through the enterprise subscription available for self-installation via github or is what the subscription offers a unique offering?

The subscription does not impact the installation of the software. The GItHub Repository has information on installing the software from source.

That is, if you install from source, you can not buy a subscription, right?

Let me ask a more precise question… When installing from githab, from the source code. Are all subscription features unlocked?

A subscription is still required for the enterprise features.