How to create your own style?

[WavyEbuilder]

Hey,

Sincere apologies if this has already been asked or is documented somewhere. I did give the discussions and issues a quick search, as well as read https://docs.slint.dev/latest/docs/slint/reference/std-widgets/style, but may of missed something.

The widget style is determined at your project’s compile time. The method to select a style depends on how you use Slint.

Does this mean that styles must be built in at compile time but multiple can be built in and selected via SLINT_STYLE?

And following that, is there a way to add a new style? If I'd like to, is it strongly preferred, or required, to upstream it into slint? Is there an easy way to make apply to all applications (I'm not entirely sure if the "theme part" of slint is dynamically linked or statically linked; I know Rust doesn't have a stable ABI of its own beyond the platform's C ABI so not entirely sure how this all works out)?

And is there any guidance on actually writing a style, similar to the docs for e.g. QStyle?

Thanks!