The DX we wanted for tapflow setup: a host-ready Mac in one command (opens in new tab)

tapflow streams iOS simulators and Android emulators into a browser, so a whole team can test an app without installing anything. The simulators run on a Mac that hosts the tapflow agent, and that Mac needs the mobile toolchain: Xcode, a simulator runtime, the Android SDK, an emulator, AVDs. tapflow already gives the people who use it a zero-install experience. We wanted the person who hosts it to get the same one. So tapflow setup brings the whole host environment up in as close to one comma...