From 697fea465ddf2ab552cb98696645aa7ba6f8565b Mon Sep 17 00:00:00 2001
From: Rizo I <rizo.isrof@gmail.com>
Date: Mon, 5 Apr 2021 14:28:51 +0100
Subject: [PATCH] (::) constructor fix for latest OCaml versions.

---
 hlist.ml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hlist.ml b/hlist.ml
index 14059ae..41ff6c0 100644
--- a/hlist.ml
+++ b/hlist.ml
@@ -1,7 +1,7 @@
 module HList = struct
   type (_, _) hlist =
     | Empty : ('a, 'a) hlist
-    | :: : 'c * ('a, 'b) hlist -> ('c -> 'a, 'b) hlist
+    | (::) : 'c * ('a, 'b) hlist -> ('c -> 'a, 'b) hlist
 
   let cons : type a b c. c -> (a, b) hlist -> (c -> a, b) hlist =
     fun h tl -> h :: tl