The creator seems to be trying to create a CLI application to rival Scrivener (or rather “screevener” as he spells it!) based on Typst.
He doesn’t say which platform is supported and I haven’t even tried downloading it as I’m much more interested in continuing to develop my own pure Typst project template.
Mark
Looks like it’s a Rust app running on macOS, Linux and Windows.
I’m still not going to bother with it. I have a Scrivener pure Typst template working for my own purposes. There are a few tweaks I’d like to make to it, though like including bibliography, without needing to go through Pandoc.
And I’m gradually making a project from it which I’ll make available here if anybody is interested.
Mark
AIUI, it’s not available for Mac yet.
I imagine you have to install Rust on your Mac and compile it. As I said, I’m not interested. There is a native Typst editor for iPadOS, but it won’t run on my Macs… I have it on my iPad Pro.
For me, Scrivener-> Typst is the way I want to go.
Mark
I think that’s the idea, but I couldn’t get it working myself, and I’m not as patient as I used to be. 
Besides which, I’m more of an AsciiDoc bod.