libportal VS guile-gi

ASHPD, acronym of Aperture Science Handheld Portal Device is a Rust & zbus wrapper of the XDG portals DBus interfaces. The library aims to provide an easy way to interact with the various portals defined per the specifications. It provides an alternative to the C library https://github.com/flatpak/libportal

Really? For the most part portals are used transparently from the toolkit, and when they're not libportal makes it pretty straight-forward.

One idea that I have been toying with lately is making use of Guile Scheme and Guile-GI, which uses the GObject Introspection framework to automatically bind to the Gtk library. I use Guix to install guile-gi, gtk, and the gobject-introspection packages.

Guile has G-Golf and guile-gi, which both work fine. Development is not the fastest, but there has been commits within the last year at least in both. Have not had experience with other Scheme implementations. Otherwise there is always the option of doing gtk through an FFI.

So I'm currently trying to figure out this API guile-gi and I'm having some trouble nailing down what to use in the tree-selection:get-selected-rows. Does anyone know of a good way to see all the available generics on a method? I also haven't figured out how to step debug these things either.

Nowadays most programming languages that want to use GObject library code (like Gtl+) use GObject Introspection (GI) to automatically generate foreign language bindings that call into the various Gtk+ native APIs written in C. Guile GI does exactly this, so you could copy the source code for Guile GI and maybe just port it over to Chicken Scheme (as long as you don't mind using the GNU General Public v3 license to release your code, because that is what Guile GI uses).