--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rust/hg-core/build.rs	Wed Dec 18 10:35:01 2024 -0500
@@ -0,0 +1,11 @@
+fn main() {
+    // The relative paths work locally but won't if published to crates.io.
+    println!("cargo::rerun-if-changed=../../mercurial/bdiff.c");
+    println!("cargo::rerun-if-changed=../../mercurial/bdiff.h");
+    println!("cargo::rerun-if-changed=../../mercurial/compat.h");
+    println!("cargo::rerun-if-changed=../../mercurial/bitmanipulation.h");
+    cc::Build::new()
+        .warnings(true)
+        .file("../../mercurial/bdiff.c")
+        .compile("bdiff");
+}