1 files changed, 12 insertions, 0 deletions
diff --git a/mingling_macros/src/func/program_final_gen.rs b/mingling_macros/src/func/program_final_gen.rs
index 41420a4..e427f05 100644
--- a/mingling_macros/src/func/program_final_gen.rs
+++ b/mingling_macros/src/func/program_final_gen.rs
@@ -280,6 +280,15 @@ pub(crate) fn program_final_gen_impl(_input: TokenStream) -> TokenStream {
         quote! { u128 }
     };
 
+    // When pathf is enabled, include the type_using.rs generated by the build
+    // script so that types from submodules are in scope for gen_program!().
+    #[cfg(feature = "pathf")]
+    let pathf_include = quote! {
+        include!(concat!(env!("OUT_DIR"), "/", env!("CARGO_PKG_NAME"), "/type_using.rs"));
+    };
+    #[cfg(not(feature = "pathf"))]
+    let pathf_include = quote! {};
+
     let expanded = quote! {
         #[derive(Debug, PartialEq, Eq, Clone, Copy)]
         #[repr(#repr_type)]
@@ -297,10 +306,13 @@ pub(crate) fn program_final_gen_impl(_input: TokenStream) -> TokenStream {
         }
 
         impl ::mingling::ProgramCollect for #name {
+            #pathf_include
+
             type Enum = #name;
             type ErrorDispatcherNotFound = ErrorDispatcherNotFound;
             type ErrorRendererNotFound = ErrorRendererNotFound;
             type ResultEmpty = ResultEmpty;
+
             fn build_renderer_not_found(member_id: Self::Enum) -> ::mingling::AnyOutput<Self::Enum> {
                 ::mingling::AnyOutput::new(ErrorRendererNotFound::new(member_id.to_string()))
             }