Reading the documentation, I just notice lots of familiarity with my own solution using haskell and gi-gtk4. I think that anybody that read https://bichanna.github.io/posts/tea-time/ will get the same ideas. This basically boils down to:

1. Use a native widget system such as GTK (I evaluated Qt too)

2. Wrap widgets into a component datatype that is aware on how to update the widget when the props/model changes.

3. Define a dispatch closure that is passed to widget that accepts messages. Actions on the widgets should use this instead of mutating a reference.

4. That dispatch closure is component aware and it will call the update function on all the widgets.

There are some extra complications for long running computations but the model is a good base to build on. I wish the best to the relm team, most likely I will use them when programminmg in rust.

• zeendo

  today at 3:01 AM

  Is your Haskell solution open source?

I used plain gtk-rs for my last project and there is definitely some friction between rust and the gobject system. I think for my next project I will give relm4 a try. Apparently you can always drop back to gtk-rs if needed.

This is Gnome/GTK, not cross-platform like I would have expected. A Linux-first approach. I’m happy that this is the world we’re in now but expect it still to be royal pain to get a build running on Windows. Huge congrats to everyone involved if not!

Why no examples of how "beautiful" this library is?

• pitched

  today at 1:14 AM

  You have to head to the documentation to see an example. It is still Rust, which is a bit of an acquired taste so keeping that beauty off the main page makes sense.

• Klonoar

  today at 3:50 AM

  Because it’s GTK4 and it’s expected that you know what that is if you’re using this.

> Built on GTK, Relm4 runs on bare metal with no additional runtime in between.

So, not native in the sense of using or even resembling the native UI toolkit.

• vpzom

  today at 2:58 AM

  unless, of course, your native UI toolkit _is_ GTK

I had to read the comments to figure out whether this was AI or not. I guess that's a sign of the times...