From 46bb1e1d6322e3dbf20915b415c7530ce3d81a46 Mon Sep 17 00:00:00 2001
From: Erez Sh <erezshin@gmail.com>
Date: Sun, 14 Jun 2020 12:37:51 +0300
Subject: [PATCH] Cache now also depends on the Lark version

---
 lark/lark.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lark/lark.py b/lark/lark.py
index 4497dd1..3855191 100644
--- a/lark/lark.py
+++ b/lark/lark.py
@@ -180,8 +180,9 @@ class Lark(Serialize):
                 if self.options.cache is not True:
                     raise ValueError("cache must be bool or str")
                 unhashable = ('transformer', 'postlex', 'lexer_callbacks', 'edit_terminals')
+                from . import __version__
                 options_str = ''.join(k+str(v) for k, v in options.items() if k not in unhashable)
-                s = grammar + options_str
+                s = grammar + options_str + __version__
                 md5 = hashlib.md5(s.encode()).hexdigest()
                 cache_fn = '.lark_cache_%s.tmp' % md5