Merge pull request #2824 from rspec/fix-build

Allow Ruby 3.0 to use older rubygems

Author: JonRowe

Gemfile

@@ -12,7 +12,7 @@ group :documentation do
 end
 
 gem 'capybara'
-gem 'ffi', '~> 1.15.5'
+gem 'ffi', '> 1.15.5'
 gem 'rake', '> 12'
 gem 'rubocop', '~> 1.28.2'
 

script/update_rubygems_and_install_bundler

@@ -11,9 +11,21 @@ function is_ruby_3_plus {
   fi
 }
 
-if is_ruby_3_plus; then
+function is_ruby_3_1_plus {
+  if ruby -e "exit(RUBY_VERSION.to_f >= 3.1)"; then
+    return 0
+  else
+    return 1
+  fi
+}
+
+
+if is_ruby_3_1_plus; then
   gem update --no-document --system
   gem install --no-document bundler
+elif is_ruby_3_plus; then
+  gem update --no-document --system '3.5.23'
+  gem install --no-document bundler
 else
   gem update --no-document --system '3.4.22'
   gem install --no-document bundler