fix: Update resource compilation and loading in meson and Rust build

src/main.rs

@@ -39,10 +39,15 @@ fn main() -> glib::ExitCode {
     textdomain(GETTEXT_PACKAGE).expect("Unable to switch to the text domain");
 
     // Load compiled resources
-    let resource_bytes = std::fs::read(concat!(env!("CARGO_MANIFEST_DIR"), "/src/aardvark.gresource"))
-        .expect("Could not load resources");
+    let resource_path = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+        .join("_build")
+        .join("src")
+        .join("aardvark.gresource");
+
+    let resource_bytes = std::fs::read(&resource_path)
+        .unwrap_or_else(|_| panic!("Could not load resources from {:?}", resource_path));
     let resources = gio::Resource::from_data(&gio::glib::Bytes::from(&resource_bytes))
-        .expect("Could not load resources");
+        .expect("Could not create resource from data");
     gio::resources_register(&resources);
 
     // Create a new GtkApplication. The application manages our main loop,

src/meson.build

@@ -10,12 +10,18 @@ gresource = gnome.compile_resources('aardvark',
   install: false,
 )
 
-# Copy the compiled resource bundle to the source directory for Cargo build
-run_command(
-  'cp',
-  meson.current_build_dir() / 'aardvark.gresource',
-  meson.current_source_dir() / 'aardvark.gresource',
-  check: true
+# Ensure resource file is available for Cargo build
+resource_file = custom_target('resource-file',
+  input: 'aardvark.gresource.xml',
+  output: 'aardvark.gresource',
+  command: [
+    find_program('glib-compile-resources'),
+    '--sourcedir=@CURRENT_SOURCE_DIR@',
+    '--target=@OUTPUT@',
+    '@INPUT@'
+  ],
+  install: false,
+  build_by_default: true
 )
 
 conf = configuration_data()