Upmin is conflicting with Impressionist

[firedev]

I am using gem impressionist for tracking views. Tried to add Upmin to my project and found a strange behaviour. As soon as there a block passed to Upmin initalizer, it starts to eager load all controllers and whatnot but somehow Impressionist is not initialized at that moment.

This works fine:

# config/initializers/upmin_admin.rb
Upmin.configure

This breaks Impressionist, application just can't start undefined method 'impressionist' for AnyController:Class

Upmin.configure do |config|
end

[joncalhoun]

I'll try to check up on this sometime this weekend. Any chance you have a test application where I can replicate the issue quickly?