Skip steep installation on Ruby 3.0 or earlier

kateinoigakukun · kateinoigakukun · commit 3cff6966c616 · 2024-12-17T10:54:02.000Z
diff --git a/Gemfile b/Gemfile
@@ -14,5 +14,5 @@ end
 
 group :check do
   gem "syntax_tree", "~> 3.5"
-  gem "steep", "~> 1.9"
+  gem "steep", "~> 1.9" if RUBY_VERSION >= "3.1.0"
 end
