This package is a fork of the upstream package, and if possible completely repeats its functionality. But the implementation has been rewritten almost completely. Most of the bugs have been fixed. It does not make sense to use the package together with the upstream, respectively, the name is left the same as the file structure. By installing it you are overwriting the upstream

• gobject-introspection
• libecal1.2-dev
• libedataserver1.2-dev
• libical-dev
• libgranite-dev
• libgtk-3-dev
• libhandy-1-dev
• libwingpanel-2.0-dev
• meson
• valac >= 0.40.3

meson build --prefix=/usr
ninja -C build
sudo ninja install -C build