notifications: set the resident hint

Even with setting this, I'm 0 for 4 different systems in having the
notifications actually stay on the screen until dismissed.

This was successful at displaying a notification on the pixelbook
desktop though, so that's 1/3 linux systems that have had success.

Cargo.toml

@@ -60,7 +60,7 @@ daemonize = "0.4"
 
 [target.'cfg(not(windows))'.dependencies]
 # show a notification
-notify-rust = "3"
+notify-rust = "4.0.0-alpha.2"
 
 # on linux, font-loader pulls in servo-font* crates which conflict with
 # our newer font related deps, so we avoid it on linux

src/config/mod.rs

@@ -152,6 +152,8 @@ impl ConfigInner {
                     notify_rust::Notification::new()
                         .summary("Wezterm Configuration")
                         .body(&format!("{}", err))
+                        // Stay on the screen until dismissed
+                        .hint(notify_rust::Hint::Resident(true))
                         // timeout isn't respected on macos
                         .timeout(0)
                         .show()