I had just noticed yesterday that Heroku was using bundler 1.2.0.pre when I pushed changes to an app. I was surprised because 1.1 came out just a few months ago. I guess this explains why.
Wasn't it also previously possible to specify your ruby version on heroku with a configuration variable? I've never done so but I seem to recall seeing it in a tutorial or some application's setup procedure.
The Heroku app stacks are tied to specific versions of ruby as far as I am aware. If you are on the Bamboo stack, you can choose to switch between 1.8.7 and 1.9.2 (or, could, I imagine they removed that with this change) but that's the only variable ruby that I know of with regard to Heroku.
Very interesting. Since bundler's Gemfile is involved in specifying the version, does this mean that bundler itself is going to be jumping into the world of Ruby version management in 1.2, or is it just acting as a dumb conduit to make the desired version number available as metadata for another tool to act on?
Wasn't it also previously possible to specify your ruby version on heroku with a configuration variable? I've never done so but I seem to recall seeing it in a tutorial or some application's setup procedure.