You'll need the following dependencies:
- gio-2.0 (>=2.74)
- libadwaita-1-dev
- libdbus-1-dev
- libswitchboard-3-dev
- libgranite-7-dev (>=7.7.0)
- libpolkit-gobject-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