A static site is one that you can serve through static hosting, where you have no control over the web server or its configuration. There is not some extra thing which is a static site with dynamic content. “Static” means “doesn't change.” The document served doesn't change subject to the person receiving it. You are talking about a solution that is dynamic. That does change based on who is making the request.
>you could definitely use a static site generator to create multiple versions of the site data and then configure your web server to select which data is emitted
And this web-server configuration would not exist within the static site. The static site generator could not output it, therefore it is not a part of the static site. It is not contained within the files output by the static site generator. It is additional dynamic content added by the web server.
It breaks the fundamental aspect of a static site, that it can be deployed simply to any service without change to the content. Just upload a zip file, and you are done.
Like I said, difference in definitions. https://www.google.com/search?q=static+site+serving+with+apa...
I get your meaning; I've just heard "static site" used to refer to a site where the content isn't dynamically computed at runtime, not a site where the server is doing a near-direct-mapping from the filesystem to the HTTP output.
> Just upload a zip file, and you are done.
This is actually how I serve my static sites via Dreamhost. The zipfile includes the content negotiation rules in the `.htaccess` file.
(Perhaps worth remembering: even the rule "the HTTP responses are generated by looking up a file matching the path in the URL and echoing that file as the body of the GET response" is still a per-server rule; there's no aspect of the HTTP spec that declares "The filesystem is directly mirrored to web access" is a thing. It's rather a protocol used by many simple web servers, and most of them allow overrides to do something slightly more complicated while being one step away from "this is just the identity function on whatever is in your filesystem, well, not technically the identity function because unless someone did something very naughty, I don't serve anything for http://example.com/../uhoh-now-i-am-in-your-user-directory").