feat(snowfall): Setup Snowfall migration

flake.nix

@@ -1,7 +1,17 @@
 {
   description = "marleyOS";
 
-  outputs =
+  outputs = inputs: inputs.snowfall-lib.mkFlake {
+    inherit inputs;
+    src = ./.;
+
+    snowfall = {
+      namespace = "marleyos";
+      title = "marleyOS";
+    }
+  };
+
+  old =
     { self, ... }@inputs:
     inputs.flake-parts.lib.mkFlake { inherit inputs; } {
       debug = true;
@@ -64,11 +74,13 @@
     };
 
   inputs = {
-    flake-parts.url = "github:hercules-ci/flake-parts";
-    nixos-unified.url = "github:srid/nixos-unified";
-
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
 
+    snowfall-lib = {
+      url = "github:snowfallorg/lib";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     home-manager = {
       url = "github:nix-community/home-manager";
       inputs.nixpkgs.follows = "nixpkgs";