fix: add wayland dev headers and scanner for pywayland build on NixOS

configs/quickshell/modules/sidebarRight/quickToggles/EasyEffectsToggle.qml

@@ -0,0 +1,49 @@
+import qs.modules.common.widgets
+import qs
+import Quickshell.Io
+import Quickshell
+import Quickshell.Hyprland
+
+QuickToggleButton {
+    id: root
+    toggled: false
+    visible: false
+    buttonIcon: "instant_mix"
+
+    onClicked: {
+        if (toggled) {
+            root.toggled = false
+            Quickshell.execDetached(["pkill", "easyeffects"])
+        } else {
+            root.toggled = true
+            Quickshell.execDetached(["easyeffects", "--gapplication-service"])
+        }
+    }
+
+    altAction: () => {
+        Quickshell.execDetached(["easyeffects"])
+        GlobalStates.sidebarRightOpen = false
+    }
+
+    Process {
+        id: fetchAvailability
+        running: true
+        command: ["bash", "-c", "command -v easyeffects"]
+        onExited: (exitCode, exitStatus) => {
+            root.visible = exitCode === 0
+        }
+    }
+
+    Process {
+        id: fetchActiveState
+        running: true
+        command: ["pidof", "easyeffects"]
+        onExited: (exitCode, exitStatus) => {
+            root.toggled = exitCode === 0
+        }
+    }
+
+    StyledToolTip {
+        content: Translation.tr("EasyEffects | Right-click to configure")
+    }
+}