Runningxctool … test should runbuild anyways, as it's a dependency, no? Someone on IRC were having trouble getting their app to build when runningxctool … build test, butxctool … test worked:

No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=x86_64, VALID_ARCHS=i386).

@fpotter Does this seem like the right thing to do, or should we keepbuild in the command?