intellij idea - Hide Projects in .sbt -

i have following declarations in .sbt file:

lazy val root = (project("core", file("."))     aggregate(project1, project2)     settings (...)) lazy val project1 = project("project1", file("project1")) lazy val project2 = project("project2", file("project2")) lazy val project3 = project("project3", file("project3")) 

i want default have project3 hidden sbt (and of course intellij idea project), , have visible after enabling via system property -dproject3.enabled=true. ideas how implement such forking?

just assign subproject conditionally:

lazy val project3 = if (system.getproperty("project3.enabled") == "true") {   project("project3", file("project3")) } else {   // cheat type system working. there might   // cleaner way this.   root }