Add Calendar install script

scripts/install-calendar.sh

@@ -1,9 +1,20 @@
 #!/bin/bash
 set -euo pipefail
 
+DOTFILES="${HOME}/.config/literate-dotfiles"
+
+tangle() {
+    emacs --batch -l org --eval "(org-babel-tangle-file \"${DOTFILES}/$1\")"
+}
+
 echo "==> Calendar and contacts packages"
 paru -S --needed \
     vdirsyncer \
     khal \
-    khard \
-    mu
+    khard
+
+echo "==> Tangling systemd configs for calendar"
+tangle "systemd.org"
+
+echo "==> Enabling vdirsyncer timer"
+systemctl --user enable --now vdirsyncer.timer