init: working version

services/NixOS.qml

@@ -0,0 +1,60 @@
+pragma Singleton
+
+import QtQuick
+import Quickshell
+import Quickshell.Io
+
+Singleton {
+    id: root
+
+    readonly property string nixVersion: nixVersionProc.nixVersion
+    readonly property list<Generation> generations: nixosGenerationsProc.generations
+    readonly property Generation currentGen: generations.find(g => g.current) ?? null
+
+    Timer {
+        running: true
+        repeat: true
+        triggeredOnStart: true
+        interval: 60000
+        onTriggered: {
+            nixVersionProc.running = true;
+            nixosGenerationsProc.running = true;
+        }
+    }
+
+    Process {
+        id: nixVersionProc
+        command: ["nix", "--version"]
+        property string nixVersion: ""
+        stdout: StdioCollector {
+            onStreamFinished: nixVersionProc.nixVersion = this.text.split(" ")[2].trim()
+        }
+    }
+
+    Process {
+        id: nixosGenerationsProc
+        command: ["nixos-rebuild", "list-generations", "--json"]
+        property list<Generation> generations: []
+        stdout: StdioCollector {
+            onStreamFinished: {
+                const json = JSON.parse(this.text);
+                nixosGenerationsProc.generations = json.map(o => genComp.createObject(root, { ipcObject: o }));
+            }
+        }
+    }
+
+    component Generation: QtObject {
+        required property var ipcObject
+        readonly property int id: ipcObject.generation
+        readonly property date date: ipcObject.date
+        readonly property string nixosVersion: ipcObject.nixosVersion
+        readonly property string kernelVersion: ipcObject.kernelVersion
+        readonly property string revision: ipcObject.configurationRevision
+        readonly property bool current: ipcObject.current
+    }
+
+    Component {
+        id: genComp
+        Generation {}
+    }
+}