as far as I know, it is not possible to build an Android app without the
JDK being installed. It looks like right now android-sdk only installs
the JRE, via its dependency on proguard. So the question is: where
should the JDK dependency go? My first guess is that this should be a
Depends: in android-sdk itself. build-tools and platform-tools can be
used without the JDK, so it shouldn't go there. And the idea of the
android-sdk meta package is to install a complete Android development
environment.