TiddlyInstall: A universal, reusable, install system

Five answers are enough. Everything under Customise already has a sensible default, and states it without being opened.

Used for the installer and for the installed app's launcher. Leave the name blank to use the project's name. Pick an icon under Customise.

There's no built-in runtime for this language, so tell the installer where to get one. Fill in each platform you're building for.

People see these URLs on the installer's "what this will do" screen before anything is downloaded.

The installer installs a compiler into the app's own folder and builds your project on the user's computer.

Linux: GCC or Clang from the catalogue. macOS: Clang from the catalogue, plus Apple's Xcode Command Line Tools. People see the compiler, and that the project's build scripts will run, before anything is installed.