Thread lifetimes through other newtypes

Closes #55

1 files changed, 2 insertions, 1 deletions

diff --git a/dhall_generator/src/derive.rs b/dhall_generator/src/derive.rs
index c911be5..e231702 100644
--- a/dhall_generator/src/derive.rs
+++ b/dhall_generator/src/derive.rs
@@ -176,7 +176,8 @@ pub fn derive_simple_static_type_inner(
     let tokens = quote! {
         impl #impl_generics dhall::SimpleStaticType for #ident #ty_generics
                 #where_clause {
-            fn get_simple_static_type() -> dhall::expr::SimpleType {
+            fn get_simple_static_type<'get_simple_static_type>() ->
+                    dhall::expr::SimpleType<'get_simple_static_type> {
                 #(#assertions)*
                 dhall::expr::SimpleType::from(#get_type)
             }