Allow assets to be set lazily.

[brandon-beacher]

Sets the stage for rails/sprockets-rails#36

@josh @guilleiguaran

[josh]

I don't think this is a good approach.

Encouraging this type of api would mean all the options should accept a lazy block, which is just a nasty direction. I regret supporting it for environment in the first. Probably consider that deprecated and possibly removed from Sprockets 2.0.

👎

[brandon-beacher]

Agreed it feels icky. Callers are unlikely to ever use the block form.

Sounds like you've got a refactor on the back burner to simply delegate this through to the Rails app config?

Perhaps we go with this for now and then lazy environment and assets are refactored to delegates at the same time?

Or is that sliding too far down the slippery slope? ;)