--- | |
src/lib.rs | 1 + | |
1 file changed, 1 insertion(+) | |
diff --git b/src/lib.rs a/src/lib.rs | |
index d3eab1a0..8a9561ba 100644 | |
--- b/src/lib.rs | |
+++ a/src/lib.rs | |
@@ -1,3 +1,4 @@ | |
+extern crate proc_macro; | |
use proc_macro::TokenStream; | |
use proc_macro2::{Group, TokenStream as TokenStream2, TokenTree}; | |
use quote::quote; |