1 files changed, 4 insertions, 3 deletions
diff --git a/lib/dune b/lib/dune
index a844074..7a54f53 100644
--- a/lib/dune
+++ b/lib/dune
@@ -1,9 +1,10 @@
 (menhir
- (flags --explain)
+ (explain true)
  (modules Parser))
 
-; (ocamllex Lexer)
+(ocamllex Lexer)
 
 (library
  (name toytt)
- (libraries asai))
+ (libraries asai)
+ (preprocess (pps ppx_deriving.std)))