Sergio, When you configure the Test package you add the Core as its dependency.
eg: spec package: 'Core-Tests' with: [ spec requires: 'Core ]. Regards! Esteban A. Maringolo 2015-04-30 16:06 GMT-03:00 Sergio Fedi <sergio.f...@gmail.com>: > Great, thanks everyone for the explanation. > > Having said that, there's still something I don't get. > > If a group is a possible configuration to load packages, then it seems that > the "reasonable" possible configurations would be: > > 1 - Core > 2 - Tests + Core (explicitly stated) > 3 - Default (Tests + Core, implicit when not specified) > > but NOT > > Tests (without the Core) > Because you wouldn't want to load the tests of a package without the Core. > > So, why would you define the Tests as a possible configuration for a > Version? > >