After the recent upgrade to OS X Lion, I installed the latest release of Xcode (version 4.2.1 when I’m writing these words).
I used to download big disk image files from Apple Developer site, but this time, given that I’m not a member of any of Apple Developer Programs, I had to turn to the App Store… which downloaded the Install Xcode.app. Confident enough, I started it, but the interface was too simple and sleek, with no way to tweak the installation process.
Digging a bit into the application bundle, it turned out that the old
interface is still there, because the new installer just wrap the meta package
and the product packages, so opening Xcode.mpkg, hidden into the
Contents/Resources folder, brought up the usual interface which allows one
to deselect some optional components.
Doing it from the terminal is actually much, much easier: