diff --git a/flake.nix b/flake.nix
index 1496c3b..6ec46ba 100644
--- a/flake.nix
+++ b/flake.nix
@@ -57,80 +57,113 @@
   };
 
   outputs =
-    inputs:
-    inputs.snowfall-lib.mkFlake {
-      inherit inputs;
-      # Must always be ./.
-      src = ./.;
+    {
+      self,
+      nixpkgs,
+      home-manager,
+      systems,
+      ...
+    }@inputs:
+    let
+      inherit (self) outputs;
+      lib = nixpkgs.lib // home-manager.lib;
+      forEachSystem = f: lib.genAttrs (import systems) (system: f pkgsFor.${system});
+      pkgsFor = lib.genAttrs (import systems) (
+        system:
+        import nixpkgs {
+          inherit system;
+          config.allowUnfree = true;
+        }
+      );
+    in
+    {
+      inherit lib;
+
+      nixosModules = import ./modules/nixos;
+      homeManagerModules = import ./modules/home-manager;
+
+      overlays = import ./overlays { inherit inputs outputs; };
+      # hydraJobs = import ./hydra.nix { inherit inputs outputs; };
+
+      packages = forEachSystem (pkgs: import ./pkgs { inherit pkgs; });
+      devShells = forEachSystem (pkgs: import ./shell.nix { inherit pkgs; });
+      formatter = forEachSystem (pkgs: pkgs.alejandra);
+
+      nixosConfigurations = {
+        # Main laptop
+        aspi = lib.nixosSystem {
+          modules = [ ./hosts/aspi ];
+          specialArgs = {
+            inherit inputs outputs;
+          };
+        };
+        # Piano raspberry pi
+        pianonix = lib.nixosSystem {
+          modules = [ ./hosts/pianonix ];
+          specialArgs = {
+            inherit inputs outputs;
+          };
+        };
+      };
+
+      # Standalone HM
+      homeConfigurations = {
+        # Main laptop
+        "julian@aspi" = lib.homeManagerConfiguration {
+          modules = [
+            ./home/julian/aspi.nix
+            ./home/julian/nixpkgs.nix
+          ];
+          pkgs = pkgsFor.x86_64-linux;
+          extraSpecialArgs = {
+            inherit inputs outputs;
+          };
+        };
+        # Media server (RPi)
+        "julian@pianonix" = lib.homeManagerConfiguration {
+          modules = [
+            ./home/julian/pianonix.nix
+            ./home/julian/nixpkgs.nix
+          ];
+          pkgs = pkgsFor.aarch64-linux;
+          extraSpecialArgs = {
+            inherit inputs outputs;
+          };
+        };
+      };
 
       # Add overlays for the `nixpkgs` channel.
-      overlays = with inputs; [
-        nix-matlab.overlay
-        nix-topology.overlays.default
-      ];
+      # overlays = with inputs; [
+      #   nix-matlab.overlay
+      #   nix-topology.overlays.default
+      # ];
 
-      snowfall = {
-        # The root of the snowfall config
-        root = ./.;
-        # lib, package and overlay namespace
-        namespace = "frajul"; # defaults to "internal"
+      # systems.modules.nixos = with inputs; [
+      #   sops-nix.nixosModules.sops
+      #   disko.nixosModules.disko
+      # ];
+      # systems.hosts.pianonix.modules = with inputs; [ nixos-hardware.nixosModules.raspberry-pi-4 ];
 
-        meta = {
-          name = "Julian's dotfiles";
-          title = "Julian's dotfiles";
-        };
-      };
-
-      # The attribute set specified here will be passed directly to NixPkgs when
-      # instantiating the package set.
-      channels-config = {
-        # Allow unfree packages.
-        allowUnfree = true;
-        nvidia.acceptLicense = true;
-
-        # Allow certain insecure packages
-        permittedInsecurePackages = [ "olm-3.2.16" ];
-      };
-
-      systems.modules.nixos = with inputs; [
-        nix-topology.nixosModules.default
-        sops-nix.nixosModules.sops
-        disko.nixosModules.disko
-      ];
-      systems.hosts.pianonix.modules = with inputs; [ nixos-hardware.nixosModules.raspberry-pi-4 ];
-
-      # topology =
-      #   with inputs;
-      #   let
-      #     host = self.nixosConfigurations.${builtins.head (builtins.attrNames self.nixosConfigurations)};
-      #   in
-      #   import nix-topology {
-      #     inherit (host) pkgs; # Only this package set must include nix-topology.overlays.default
-      #     modules = [
-      #       (import ./topology { inherit (host) config; })
-      #       { inherit (self) nixosConfigurations; }
-      #     ];
-      #   };
-    }
-    // {
       # deploy-rs node configuration
-      deploy.nodes.pianonix = {
-        hostname = "pianonix.local";
-        profiles.system = {
-          sshUser = "root";
-          user = "root";
-          path = inputs.deploy-rs.lib.aarch64-linux.activate.nixos inputs.self.nixosConfigurations.pianonix;
-          confirmTimeout = 90; # default: 30s; raspberrypi takes a little longer restarting services
+      deploy.nodes = {
+        pianonix = {
+          hostname = "pianonix.local";
+          profiles.system = {
+            sshUser = "root";
+            user = "root";
+            path = inputs.deploy-rs.lib.aarch64-linux.activate.nixos self.nixosConfigurations.pianonix;
+            confirmTimeout = 90; # default: 30s; raspberrypi takes a little longer restarting services
+          };
         };
-      };
 
-      deploy.nodes.builder = {
-        hostname = "builder.julian-mutter.de";
-        profiles.system = {
-          sshUser = "root";
-          user = "root";
-          path = inputs.deploy-rs.lib.x86_64-linux.activate.nixos inputs.self.nixosConfigurations.builder;
-          remoteBuild = true;
+        builder = {
+          hostname = "builder.julian-mutter.de";
+          profiles.system = {
+            sshUser = "root";
+            user = "root";
+            path = inputs.deploy-rs.lib.x86_64-linux.activate.nixos self.nixosConfigurations.builder;
+            remoteBuild = true;
+          };
         };
       };
     };
diff --git a/overlays/default.nix b/overlays/default.nix
new file mode 100644
index 0000000..7f08181
--- /dev/null
+++ b/overlays/default.nix
@@ -0,0 +1,16 @@
+{
+  inputs,
+  outputs,
+}:
+{
+  nixpkgs-stable-unstable = final: prev: {
+    unstable = import inputs.nixpkgs {
+      system = prev.system;
+      config.allowUnfree = true;
+    };
+    stable = import inputs.nixpkgs-stable {
+      system = prev.system;
+      config.allowUnfree = true;
+    };
+  };
+}