I only ever did a few hobby-level projects in scala, never more than a couple thousand lines or so. There were several reasons that stopped me from wanting to

I only ever did a few hobby-level projects in scala, never more than a couple thousand lines or so. There were several reasons that stopped me from wanting to go further (sbt being so unpleasant, uncertainty about the future of things with dotty, and a community I didn't want to be associated with (the worst of whom, Tony Morris, having since been kicked out, but still)).