I broke up with neovim....vim is my best friend now

dot_vim/plugged/ale/ale_linters/scala/scalac.vim

@@ -0,0 +1,15 @@
+" Author: Zoltan Kalmar - https://github.com/kalmiz,
+"         w0rp <devw0rp@gmail.com>
+" Description: Basic scala support using scalac
+
+function! s:IsSbt(buffer) abort
+    return index(split(getbufvar(a:buffer, '&filetype'), '\.'), 'sbt') >= 0
+endfunction
+
+call ale#linter#Define('scala', {
+\   'name': 'scalac',
+\   'executable': {buf -> s:IsSbt(buf) ? '' : 'scalac'},
+\   'command': '%e -Ystop-after:parser %t',
+\   'callback': 'ale#handlers#scala#HandleScalacLintFormat',
+\   'output_stream': 'stderr',
+\})