title: Intellij IDEA compiles all modules even though I asked for only 1
body: <p>I have several modules in the project with a complex dependency structure. When I want to compile and run unit tests for 1 module, I want IDEA to ignore any compilation errors in unrelated modules. How can I do that? Currently IDEA compiles everything even if I say "compile module 1".</p>
  
  <p>I don't want to setup several different projects for this.</p>