I installed Groovy with sdkman and everything went well, but when I want to make a new project in Intellij Idea I am prompted to choose the Groovy SDK, but I can't find it anywhere.
So my question is where is the groovy library installed?
Installing sdkman through cygwin and then installing groovy with sdkman was causing a rather deeply nested folder structure.
I found the groovy library under C:\cygwin\home\<username>\.sdkman\candidates\groovy\2.4.6
.
Answer provided by tim_yates :)