You'll need the following dependencies:
- libgtk-4-dev
- libgranite-7-dev
- libadwaita-1-dev
- meson
- valac
Run meson to configure the build environment and then ninja to build
meson build --prefix=/usr
cd build
ninja
To install, use ninja install
ninja install
To test, reset the viewed key, then launch Onboarding:
gsettings reset io.elementary.onboarding viewed; io.elementary.onboarding