lets you run the binary from anywhere

build.rs

@@ -0,0 +1,11 @@
+use std::env;
+
+fn main() {
+    // Only add rpaths on macOS
+    if env::var("CARGO_CFG_TARGET_OS").unwrap() == "macos" {
+        // Add rpath so libVisionBridge.dylib can be found at runtime
+        // @executable_path means "relative to the executable"
+        println!("cargo:rustc-link-arg=-Wl,-rpath,@executable_path");
+        println!("cargo:rustc-link-arg=-Wl,-rpath,@loader_path");
+    }
+}