rake watch - not working on OSX?

[jameswyse]

I've installed all the required gems, including watchr, but rake always asks me for watchr.

James-MBA:newproject james$ rake watch
(in /Users/james/Sites/newproject)
rake aborted!
You need watchr! Install it by running `gem install watchr`
/Users/james/Sites/newproject/Rakefile:31
(See full trace by running task with --trace)

James-MBA:newproject james$ sudo gem install watchr
Successfully installed watchr-0.7
1 gem installed
Installing ri documentation for watchr-0.7...
Installing RDoc documentation for watchr-0.7...

James-MBA:newproject james$ rake watch
(in /Users/james/Sites/newproject)
rake aborted!
You need watchr! Install it by running `gem install watchr`
/Users/james/Sites/newproject/Rakefile:31
(See full trace by running task with --trace)

James-MBA:newproject james$ watchr
Usage: watchr [opts] path/to/script

[jameswyse]

I've upgraded ruby to the latest version, now I don't get that error. However rake watch doesn't seem to notice any changes, and produces the following notice:

James-MBA:newproject james$ rake watch /Users/james/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/watchr-0.7/lib/watchr.rb:111: Use RbConfig instead of obsolete and deprecated Config.

[tjstein]

I get the RbConfig error as well:

➜ ruby -v ruby 1.9.3p125 (2012-02-16 revision 34643) [x86_64-darwin11.3.0]

[gabrielmancini]

same error