Debuggerのいんすとーるにしっぱいするけんについて

GitHubには既に報告があがっているようです。
このツールの依存性でうんにゃらかんにゃらあるので、解決策募集してます。

$ gem install debugger
WARNING:  You don't have /Users/yuxxxx/.gem/ruby/2.0.0/bin in your PATH,
	  gem executables will not run.
Building native extensions.  This could take a while...
ERROR:  Error installing debugger:
	ERROR: Failed to build gem native extension.

    /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb
checking for rb_method_entry_t.called_id in method.h... no
checking for rb_control_frame_t.method_id in method.h... no
checking for rb_method_entry_t.called_id in method.h... no
checking for rb_control_frame_t.method_id in method.h... no
checking for rb_method_entry_t.called_id in method.h... yes
checking for vm_core.h... yes
checking for iseq.h... no
Makefile creation failed
*************************************************************

  NOTE: If your headers were not found, try passing
        --with-ruby-include=PATH_TO_HEADERS      

*************************************************************

*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
	--with-opt-dir
	--without-opt-dir
	--with-opt-include
	--without-opt-include=${opt-dir}/include
	--with-opt-lib
	--without-opt-lib=${opt-dir}/lib
	--with-make-prog
	--without-make-prog
	--srcdir=.
	--curdir
	--ruby=/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby
	--with-ruby-dir
	--without-ruby-dir
	--with-ruby-include
	--without-ruby-include=${ruby-dir}/include
	--with-ruby-lib
	--without-ruby-lib=${ruby-dir}/


Gem files will remain installed in /Users/yuxxxx/.gem/ruby/2.0.0/gems/debugger-1.6.3 for inspection.
Results logged to /Users/yuxxxx/.gem/ruby/2.0.0/gems/debugger-1.6.3/ext/ruby_debug/gem_make.out

環境はOS X(10.9.1)、MacBook Pro Retina 13インチ(Early 2013)、Ruby2.0.0p247です。
なおrbenvで既定のバージョンを2.0.0-p353に設定してやってみるとSEGVで乙りました。もうやだ…
ちなみに各所探してみましたが、method.h、vm_core.h、iseq.hがないことは確認済みです。これもしかしてRuby1.9系ならインストール成功するﾊﾟﾃｨｰﾝでしょうか…