Starting Thinking Sphinx on Joyent SmartOS with svcadm

I followed this tutorial: http://www.neo.com/2013/10/09/unicorn-on-joyent-smartos and the RailsCast about configuring Nginx and Unicorn, and successfully set up my first non-Passenger/Apache Rails app last weekend.

Buoyed by this success, I next set about trying to get ThinkingSphinx to restart when the server starts, and managed to get my server to run away with 115% server usage. (Oddly, while that was going on, TS was working just fine.)

As you know, starting TS requires one to cd into the Rails directory, then issue a rake command: rake ts:start

Using these commands to start and stop, then:

/usr/local/rvm/gems/ruby-1.9.3-p547@global/bin/bundle exec rake ts:start RAILS_ENV=production
/usr/local/rvm/gems/ruby-1.9.3-p547@global/bin/bundle exec rake ts:stop RAILS_ENV=production

and these environment variables to set the necessary paths:

svccfg -s sphinx setenv PATH /usr/local/rvm/gems/ruby-1.9.3-p547/bin:$PATH
svccfg -s sphinx setenv GEM_PATH /usr/local/rvm/gems/ruby-1.9.3-p547:/usr/local/rvm/gems/ruby-1.9.3-p547@global

What resulted was a death by a thousand errors; this repeated over and over:

[ Jun 3 01:10:02 Stopping because service exited with an error. ]
[ Jun 3 01:10:02 Executing start method ("/usr/local/rvm/gems/ruby-1.9.3-p547@global/bin/bundle exec /usr/local/rvm/gems/ruby-1.9.3-p547/bin/rake ts:start RAILS_ENV=production"). ]
rake aborted!
ArgumentError: couldn't find HOME environment -- expanding `~'
/usr/local/rvm/gems/ruby-1.9.3-p547/bin/ruby_executable_hooks193:15:in `eval'
/usr/local/rvm/gems/ruby-1.9.3-p547/bin/ruby_executable_hooks193:15:in `<main>'
(See full trace by running task with --trace)

Can anyone point me to a recipe for using svcadm to start a Rails helper like this? Anyone see a glaring error in my approach?

Thanks in advance,

Walter