You'll need the following dependencies:
- libaccountsservice-dev
- libadwaita-1-dev
- libgirepository1.0-dev
- libgnome-desktop-4-dev
- libgranite-7-dev >= 7.4.0
- libgtk4-dev
- libpolkit-gobject-1-dev
- libpwquality-dev
- libswitchboard-3-dev
- meson >= 0.46.1
- policykit-1
- valac
Run meson build to configure the build environment and then change to the build directory and run ninja to build
meson build --prefix=/usr
cd build
ninja
To install, use ninja install
ninja install