OP here. This is one of the reasons to mention Scala in the title. Not just Scala, but also an opportunity to learn frameworks like Scalatra.

I was actually evaluating different Scala frameworks and stumbled upon this project as well as another neat one: https://github.com/ornicar/lila

Although I understand your motivation, when I see "clone of X in language Y" I think that this is something being hyped only because of the choice of language and not because of the project's actual merits.

In the case of GitBucket the most important advantage is its easy installation, especially when compared to the more well known GitLab (that I never dared install after reading through the installation instructions).

> It would be a great way of learning Scala.

For me it is :). I started to learn Scala after finding this nice project. Since it was so easy to install it (just copied the WAR file in a running Tomcat) it made me curious enough to give Scala a try and also to buy the Scalatra book too :).