Allow ruby versions 3.2 and 3.4 for installation

libs/libruby/ruby/backward/2/bool.h

@@ -0,0 +1,36 @@
+#ifndef RUBY_BACKWARD2_BOOL_H                        /*-*-C++-*-vi:se ft=cpp:*/
+#define RUBY_BACKWARD2_BOOL_H
+/**
+ * @author     Ruby developers <ruby-core@ruby-lang.org>
+ * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
+ *             Permission  is hereby  granted,  to  either redistribute  and/or
+ *             modify this file, provided that  the conditions mentioned in the
+ *             file COPYING are met.  Consult the file for details.
+ * @warning    Symbols   prefixed  with   either  `RBIMPL`   or  `rbimpl`   are
+ *             implementation details.   Don't take  them as canon.  They could
+ *             rapidly appear then vanish.  The name (path) of this header file
+ *             is also an  implementation detail.  Do not expect  it to persist
+ *             at the place it is now.  Developers are free to move it anywhere
+ *             anytime at will.
+ * @note       To  ruby-core:  remember  that   this  header  can  be  possibly
+ *             recursively included  from extension  libraries written  in C++.
+ *             Do not  expect for  instance `__VA_ARGS__` is  always available.
+ *             We assume C99  for ruby itself but we don't  assume languages of
+ *             extension libraries.  They could be written in C++98.
+ * @brief      Defines old TRUE / FALSE
+ */
+#include "ruby/internal/stdbool.h"
+
+#ifndef FALSE
+# define FALSE false
+#elif FALSE
+# error FALSE must be false
+#endif
+
+#ifndef TRUE
+# define TRUE true
+#elif ! TRUE
+# error TRUE must be true
+#endif
+
+#endif /* RUBY_BACKWARD2_BOOL_H */