feat(phone): set up 'nix-on-droid'

flake.nix

@@ -22,6 +22,11 @@
       url = "github:nix-community/home-manager";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    nix-on-droid = {
+      url = "github:nix-community/nix-on-droid/release-24.05";
+      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.home-manager.follows = "home-manager";
+    };
     nixgl = {
       url = "github:nix-community/nixGL";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -49,6 +54,7 @@
       sops-nix,
       nix-secrets,
       home-manager,
+      nix-on-droid,
       nixgl,
       firefox-addons,
       nvim,
@@ -88,6 +94,20 @@
           };
         };
       };
+      # https://github.com/nix-community/nix-on-droid/blob/master/templates/advanced/flake.nix
+      nixOnDroidConfigurations = {
+        pixel = nix-on-droid.lib.nixOnDroidConfiguration {
+          modules = [ ./phone ];
+          extraSpecialArgs = {
+            inherit inputs outputs dotsPath;
+          };
+          pkgs = import nixpkgs {
+            system = "aarch64-linux";
+            overlays = [ nix-on-droid.overlays.default ];
+          };
+          home-manager-path = home-manager.outPath;
+        };
+      };
 
       colmenaHive = import ./deploy/colmena.nix {
         inherit