Like many developers you wish to have newest version of each tool. In my case it was exactly the same. I want playframework 2.2.1 and newest bootstrap. But yet not everything was working very good and I've got compilation errors on less files.
Meanwhile there are few links:
link1,
link2 but they were not working correctly and therefore they were to complicated. I've combined some links, used my instinct and found easy way to fix this problem :)
Renaming helper files except bootstrap.less
Yes, it is very easy to do.
Then I changed all imports:
Finally I changed encoding in my notepad++ to UTF:
Then in my view I could write this:
<link rel="stylesheet" href="@routes.Assets.at("stylesheets/bootstrap/bootstrap.css")" />