If I want to try this can I build from source today? Or do I need to wait until you've completed the ice.rs rewrite?
Yes, you can download latest version for linux here: https://github.com/lumehq/coop/releases/tag/v0.1.7 but it maybe not run well on your platform, because it depend on gtk3 and webview.
Awesome thank you, keep it up good luck with the refactor!