[nagisa]

It is possible to use the CI to build the website. My static site generator is written in haskell, so for me CI was the only option. Here's how (GHA is my CI):

* build the website and produce a GHA artifact packaged as a zip or somesuch;

* invoke Pages deploy hook API endpoint;

* within cloudflare pages run a (e.g. python) script to download the artifact, decompress it and place the resulting files in the correct output directory.

Ideally these kinds of gymnastics wouldn't be necessary and it would be possible to just run something like `cfpages deploy .` but it is not absolutely impossible to get something working, either.