feat: Add macOS-specific resource path resolution for app bundle

src/config.rs

@@ -2,3 +2,19 @@ pub static VERSION: &str = "0.1.0";
 pub static GETTEXT_PACKAGE: &str = "aardvark";
 pub static LOCALEDIR: &str = "/app/share/locale";
 pub static PKGDATADIR: &str = "/app/share/aardvark";
+
+#[cfg(target_os = "macos")]
+pub fn get_resource_base() -> String {
+    if let Ok(exe_path) = std::env::current_exe() {
+        // On macOS, executable is in MacOS folder, resources should be in Resources
+        if let Some(app_bundle) = exe_path.parent().and_then(|p| p.parent()) {
+            return app_bundle.join("Resources").to_string_lossy().into_owned();
+        }
+    }
+    PKGDATADIR.to_owned() // fallback to the default
+}
+
+#[cfg(not(target_os = "macos"))]
+pub fn get_resource_base() -> String {
+    PKGDATADIR.to_owned()
+}

src/main.rs

@@ -28,8 +28,8 @@ use self::window::AardvarkWindow;
 
 use config::{GETTEXT_PACKAGE, LOCALEDIR, PKGDATADIR};
 use gettextrs::{bind_textdomain_codeset, bindtextdomain, textdomain};
-use gtk::{gio, glib};
 use gtk::prelude::*;
+use gtk::{gio, glib};
 
 fn main() -> glib::ExitCode {
     // Set up gettext translations
@@ -39,8 +39,8 @@ fn main() -> glib::ExitCode {
     textdomain(GETTEXT_PACKAGE).expect("Unable to switch to the text domain");
 
     // Load resources
-    let resources = gio::Resource::load(PKGDATADIR.to_owned() + "/aardvark.gresource")
-        .expect("Could not load resources");
+    let resource_path = config::get_resource_base() + "/aardvark.gresource";
+    let resources = gio::Resource::load(&resource_path).expect("Could not load resources");
     gio::resources_register(&resources);
 
     // Create a new GtkApplication. The application manages our main loop,