--- glib2-3.5.1/test/test-spawn.rb.env	2022-01-23 13:23:35.823775546 +0900
+++ glib2-3.5.1/test/test-spawn.rb	2022-01-23 13:25:04.325532503 +0900
@@ -37,7 +37,9 @@ class TestGLibSpawn < Test::Unit::TestCa
     only_not_windows
     only_not_scl
 
-    if RbConfig.respond_to?(:ruby)
+    if File.exist?('/usr/bin/ruby-mri')
+      ruby = '/usr/bin/ruby-mri'
+    elsif RbConfig.respond_to?(:ruby)
       ruby = RbConfig.ruby
     else
       ruby = File.join(RbConfig::CONFIG['bindir'],