nix: Add host polder and refractor modules

nixcfgs/modules/nixos/desktop/libvirt.nix

@@ -0,0 +1,30 @@
+{pkgs, ...}: {
+  environment.systemPackages = with pkgs; [
+    virt-manager
+    dnsmasq
+    virtiofsd
+  ];
+  programs.virt-manager.enable = true;
+  virtualisation.libvirtd = {
+    enable = true;
+    qemu = {
+      package = pkgs.qemu_kvm;
+      runAsRoot = true;
+      swtpm.enable = true;
+      # ovmf = {
+      #   enable = true;
+      #   packages = [
+      #     (pkgs.OVMF.override {
+      #       secureBoot = true;
+      #       tpmSupport = true;
+      #     }).fd
+      #   ];
+      # };
+    };
+  };
+  users.users.js0ny = {
+    extraGroups = ["libvirtd"];
+  };
+  networking.firewall.trustedInterfaces = ["virbr0"];
+  virtualisation.spiceUSBRedirection.enable = true;
+}