revert removal of PartialEq

diff --git a/crates/prolog_parser/src/lexer.rs b/crates/prolog_parser/src/lexer.rs
index b9bda1d0f71371ae4057a5d4d7748330e51e24df..02053035cec80d4060139842b6f88934765e7e9b 100644 (file)
--- a/crates/prolog_parser/src/lexer.rs
+++ b/crates/prolog_parser/src/lexer.rs
@@ -33,7 +33,7 @@ macro_rules! consume_chars_with {
     };
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq)]
 pub enum Token {
     Constant(Constant),
     Var(Rc<Atom>),