feat: add caleastia shell

home/user/quickshell.nix

@@ -0,0 +1,31 @@
+{ pkgs, ... }:
+{
+  home.packages = with pkgs; [
+    quickshell
+  ];
+
+  systemd.user.services.quickshell = {
+    Unit = {
+      Description = "Quickshell";
+      After = [ "graphical-session.target" ];
+      PartOf = [ "graphical-session.target" ];
+    };
+
+    Service = {
+      type = "exec";
+      ExecStart = "${pkgs.quickshell}/bin/quickshell";
+      Restart = "on-failure";
+      RestartSec = "5s";
+      TimeoutStopSec = "5s";
+      Environment = [
+        "QT_QPA_PLATFORM=wayland"
+      ];
+
+      Slice = "session.slice";
+    };
+
+    Install = {
+      WantedBy = [ "graphical-session.target" ];
+    };
+  };
+}