feat(migration)

crates/migrate/build.rs

@@ -0,0 +1,19 @@
+// rust2go build script.
+//
+// Wires up the Go source tree (./go/r2g) into the Rust build:
+//   - Embeds the Go source path so the Builder can compile it via CGO.
+//   - Wires `src/idl.rs` (Rust IDL) → `./go/r2g/gen.go`
+//     (auto-generated Go glue).
+//
+// On every `cargo build` the Builder regenerates gen.go if the IDL
+// changed, then compiles the Go code into a static library that the
+// Rust crate is linked against.
+fn main() {
+    rust2go::Builder::new()
+        .with_go_src("./go/r2g")
+        // gen.go is written relative to the build script's CWD (the
+        // crate root), so we spell out the path under go/r2g/ where
+        // the Go package lives.
+        .with_regen("src/idl.rs", "go/r2g/gen.go")
+        .build();
+}