A bundle is basically what you see as an application in macOS launcher; under the hood, each app is actually a subdirectory with a bunch of things in it, which

A bundle is basically what you see as an application in macOS launcher; under the hood, each app is actually a subdirectory with a bunch of things in it, which presents as a single-clickable in the GUI. I would interpret this to mean "manually sudo copy the (app directory) to /Applications, there is no installer" (download, untar and copy) For the releases, I don't actually see a published tarball for the bundle (on github) so I'm going to further think that they mean "...first you have to follow the compile instructions to create the output bundle (binaries)" - get Xcode installed, etc. and follow the second macOS readme. Better answer on bundles: https://en.wikipedia.org/wiki/Bundle_(macOS) https://en.wikipedia.org/wiki/Bundle_(macOS)