Switch from im-rc to imbl which is maintained.

Cargo.toml

@@ -8,7 +8,7 @@ gettext-rs = { version = "0.7", features = ["gettext-system"] }
 gtk = { version = "0.7.1", package = "gtk4", features = ["v4_10"]}
 glib = { version = "0.18", features = ["log"] }
 log = "0.4.11"
-im-rc = "15.1.0"
+imbl = "3.0.0"
 once_cell = "1.15.0"
 wireplumber = { git = "https://github.com/arcnmx/wireplumber.rs.git", rev = "341b0c4e8d177f5f21c109cf88cca4f2dc1f853a", features = ["v0_4_12"] }
 #wireplumber = { git = "https://github.com/saivert/wireplumber.rs.git", branch = "use_pipewire_from_git", features = ["v0_4_12"] }

src/backend/pwnodemodel.rs

@@ -3,7 +3,7 @@
 use crate::backend::PwNodeObject;
 use gtk::{gio, glib, prelude::*, subclass::prelude::*};
 use std::cell::RefCell;
-use im_rc::Vector;
+use imbl::Vector;
 
 mod imp {
     use super::*;

src/backend/pwroutefiltermodel.rs

@@ -4,7 +4,7 @@ use super::{ParamAvailability, PwRouteObject, RouteDirection};
 use glib::{closure_local, subclass::prelude::*, Properties};
 use gtk::{gio, prelude::*, subclass::prelude::*};
 use std::cell::{Cell, RefCell};
-use std::collections::BTreeSet;
+use imbl::OrdSet;
 
 mod imp {
     use super::*;
@@ -13,7 +13,7 @@ mod imp {
     #[properties(wrapper_type = super::PwRouteFilterModel)]
     pub struct PwRouteFilterModel {
         /// Contains the items that matches the filter predicate.
-        pub(super) hashset: RefCell<BTreeSet<u32>>,
+        pub(super) hashset: RefCell<OrdSet<u32>>,
 
         #[property(get, set, construct_only, builder(RouteDirection::Unknown))]
         pub(super) direction: Cell<RouteDirection>,
@@ -53,14 +53,16 @@ mod imp {
 
     impl PwRouteFilterModel {
         pub fn set_model(&self, new_model: Option<&gio::ListModel>) {
+
+
             if let Some(new_model) = new_model {
                 assert!(self.item_type().is_a(new_model.item_type()));
 
                 let widget = self.obj();
                 let handler = closure_local!(@watch widget => move |listmodel: &gio::ListModel, position: u32, _removed: u32, _added: u32| {
                     let removed = widget.imp().hashset.borrow().len() as u32;
 
-                    let mut hashset = BTreeSet::new();
+                    let mut hashset = OrdSet::new();
 
                     for (a, routeobject) in listmodel.iter::<PwRouteObject>()
                         .skip(position as usize)