Do not install neovim by default I guess

home/features/cli/khal.nix

@@ -1,3 +1,4 @@
+# TODO: sync theme with global theme
 { pkgs, ... }: {
   home.packages = with pkgs; [ khal ];
   xdg.configFile."khal/config".text = ''
@@ -5,10 +6,14 @@
       [[calendars]]
         path = ~/Calendars/*
         type = discover
+        color = dark magenta
 
     [locale]
       timeformat = %H:%M
       dateformat = %d/%m/%Y
+
+    [view]
+      theme = light
   '';
   satellite.persistence.at.data.apps.khal.directories = [
     "Calendars"