Mac OS X disk image with [relocatable application bundle](https://en.wikipedia.org/wiki/Bundle_%28macOS%29#macOS_application_bundles). Needs [[xquartz][]] (X11) installed for running the [[development tools][]]. The bundle also provides the commandline tools in the =Contents/MacOS= directory. Users of older MacOS versions are adviced to use Macports, Homebrew or install from source.