fix(ci): resolve macOS aarch64 build (gexiv2/gobject linking)

.github/workflows/publish.yml

@@ -23,9 +23,6 @@ jobs:
           - platform: 'macos-latest'   # Apple Silicon (arm64)
             args: '--target aarch64-apple-darwin'
             rust_targets: 'aarch64-apple-darwin'
-          - platform: 'macos-13'       # Intel (x86_64) — last Intel GitHub runner
-            args: '--target x86_64-apple-darwin'
-            rust_targets: 'x86_64-apple-darwin'
           - platform: 'ubuntu-24.04'   # glibc 2.39 — required by ORT prebuilt binaries
             args: ''
             rust_targets: ''
@@ -169,3 +166,5 @@ jobs:
           releaseDraft: true
           prerelease: false
           args: ${{ matrix.args }}
+
+

src-tauri/Cargo.toml

@@ -16,6 +16,7 @@ crate-type = ["staticlib", "cdylib", "rlib"]
 
 [build-dependencies]
 tauri-build = { version = "2", features = [] }
+pkg-config = "0.3"
 
 [dependencies]
 tauri = { version = "2", features = ["protocol-asset"] }

src-tauri/build.rs

@@ -1,3 +1,25 @@
 fn main() {
+    // The macOS `gexiv2_metadata_free` shim in lib.rs calls `g_object_unref`,
+    // which lives in libgobject-2.0. gexiv2 lists gobject only under
+    // Requires.private, so pkg-config omits it from the dynamic link line and
+    // the symbol goes unresolved. Link gobject-2.0 explicitly on macOS.
+    //
+    // Gate on the *target* OS (CARGO_CFG_TARGET_OS) rather than a cfg! attribute:
+    // a build script is compiled for the host, so #[cfg(target_os = ...)] here
+    // would reflect the host, not what we are building for.
+    if std::env::var("CARGO_CFG_TARGET_OS").as_deref() == Ok("macos") {
+        match pkg_config::Config::new().probe("gobject-2.0") {
+            Ok(lib) => {
+                for path in lib.link_paths {
+                    println!("cargo:rustc-link-search=native={}", path.display());
+                }
+            }
+            Err(e) => {
+                println!("cargo:warning=pkg-config could not locate gobject-2.0: {e}");
+            }
+        }
+        println!("cargo:rustc-link-lib=dylib=gobject-2.0");
+    }
+
     tauri_build::build()
 }

src-tauri/src/lib.rs

@@ -1,5 +1,16 @@
 mod tagger;
 
+// gexiv2 0.16 (Homebrew) removed gexiv2_metadata_free; rexiv2 0.10 still calls it.
+// This shim forwards to g_object_unref, which is the correct GObject cleanup path.
+#[cfg(target_os = "macos")]
+#[no_mangle]
+pub unsafe extern "C" fn gexiv2_metadata_free(metadata: *mut std::ffi::c_void) {
+    extern "C" {
+        fn g_object_unref(object: *mut std::ffi::c_void);
+    }
+    g_object_unref(metadata);
+}
+
 use tagger::{
     get_folder_depth_analysis, get_image_ai_tags, get_image_data, get_image_metadata,
     get_images_in_folder, get_initial_folder, get_recursive_images, get_subfolders, get_thumbnail,