From 9892f0d115f02311a0c9f4e8a41955490e844c10 Mon Sep 17 00:00:00 2001
From: Eric Guo <eric.guocz@gmail.com>
Date: Mon, 6 Jun 2022 13:55:25 +0800
Subject: [PATCH] Add post_install_message warning.

---
 wechat.gemspec | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/wechat.gemspec b/wechat.gemspec
index aa4ab0f1..8a2bef7a 100644
--- a/wechat.gemspec
+++ b/wechat.gemspec
@@ -40,4 +40,10 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rspec-rails', '~> 5.1'
   s.add_development_dependency 'rspec-mocks', '= 3.10.2'
   s.add_development_dependency 'sqlite3', '~> 1.4'
+
+  s.post_install_message = %Q(*****WECHAT BREAK CHANGE*****
+Including correct version of `psych` after upgrade wechat, if not sure, using v3.3.2.
+Ruby 3.1’s incompatible changes to its YAML module (Psych 4), detail see:
+https://www.ctrl.blog/entry/ruby-psych4.html
+*****************************)
 end