try to link against the mise install of ruby

engine/language_client_ruby/ext/ruby_ffi/build.rs

@@ -1,9 +1,24 @@
+use std::process::Command;
+
 pub fn main() {
     // This is derived from the rustc commands that 'rake compile' runs, e.g.
     //
     // cargo rustc --package ruby_ffi --manifest-path /Users/sam/baml/engine/language_client_ruby/ext/ruby_ffi/Cargo.toml --target-dir /Users/sam/baml/engine/target --lib --profile release -- -C linker=clang -L native=/Users/sam/.local/share/mise/installs/ruby/3.1.6/lib -L native=/opt/homebrew/opt/gmp/lib -C link-arg=-Wl,-undefined,dynamic_lookup
     //
     // You need to run 'rake compile' from language_client_ruby itself to see these paths.
 
+    match Command::new("mise").args(["where", "ruby"]).output() {
+        Ok(output) => {
+            let ruby_path = String::from_utf8_lossy(&output.stdout).trim().to_string();
+            println!("cargo:rustc-link-search=native={}/lib", ruby_path);
+        }
+        Err(e) => {
+            println!(
+                "cargo:rustc-warning=Failed to execute 'mise where ruby': {}",
+                e
+            );
+        }
+    }
+
     println!("cargo:rustc-link-arg=-Wl,-undefined,dynamic_lookup");
 }