some changes

home/system/packages/derivations/ubports-installer/default.nix

@@ -0,0 +1,55 @@
+{
+  lib,
+  appimageTools,
+  fetchurl,
+  makeDesktopItem,
+}: let
+  pname = "ubports-installer";
+
+  icon = ./ubports-mascot.jpg;
+
+  desktopItems = [
+    (makeDesktopItem {
+      name = pname;
+      inherit icon;
+      desktopName = "Ubuntu Touch Installer";
+      genericName = "GUI for installing Ubuntu Touch";
+      exec = "@out@/bin/ubports-installer";
+      comment = "GUI for installing Ubuntu Touch";
+      categories = ["System"];
+      startupNotify = false;
+      keywords = ["system" "os" "network" "ubuntu" "touch" "mobile"];
+    })
+  ];
+in
+  appimageTools.wrapType2 rec {
+    inherit pname;
+    version = "0.10.0";
+
+    src = fetchurl {
+      url = "https://github.com/ubports/ubports-installer/releases/download/${version}/ubports-installer_${version}_linux_x86_64.AppImage";
+      hash = "sha256-oUQ4AaRiUMeklyI4xzH+krXyedqpLiA9obo5uO8JJak=";
+    };
+
+    extraInstallCommands =
+      ''
+        mv $out/bin/${pname}-${version} $out/bin/${pname}
+      ''
+      + lib.concatMapStringsSep "\n "
+      (e: ''
+        install -Dm444 -t $out/share/applications ${e}/share/applications/*.desktop
+      '')
+      desktopItems
+      + ''
+        install -Dm444 ${icon} $out/share/icons/apps/${pname}.jpg;
+
+        for f in $out/share/applications/*.desktop; do
+          substituteInPlace $f --subst-var out
+        done
+      '';
+
+    meta = with lib; {
+      description = "Ubuntu Touch installer";
+      license = licenses.free;
+    };
+  }

hosts/common/system/udev.nix

@@ -0,0 +1,5 @@
+{...}: {
+  services.udev.extraRules = ''
+    KERNEL=="i2c-[0-9]*", GROUP="i2c", MODE="0660"
+  '';
+}

hosts/earth/services/libvirtd.nix

@@ -0,0 +1,3 @@
+{...}: {
+  virtualisation.libvirtd.enable = true;
+}

hosts/earth/services/podman.nix

@@ -0,0 +1,6 @@
+{...}: {
+  virtualisation.podman = {
+    enable = true;
+    dockerCompat = true;
+  };
+}