Register as flake template

First step to generalizing this repo. Makes it easier to deploy. Later I
may move my host configs to another repo.

flake.nix

@@ -13,10 +13,9 @@
   inputs = 
     {
       # Core dependencies.
-      # Two inputs so I can track them separately at different rates.
+      # Two inputs so I can track them independently
       nixpkgs.url = "nixpkgs/master";
       nixpkgs-unstable.url = "nixpkgs/master";
-
       home-manager.url = "github:rycee/home-manager/master";
       home-manager.inputs.nixpkgs.follows = "nixpkgs";
 
@@ -27,7 +26,6 @@
 
   outputs = inputs @ { self, nixpkgs, nixpkgs-unstable, ... }:
     let
-      inherit (lib) attrValues;
       inherit (lib.my) mapModules mapModulesRec mapHosts;
 
       system = "x86_64-linux";
@@ -35,10 +33,10 @@
       mkPkgs = pkgs: extraOverlays: import pkgs {
         inherit system;
         config.allowUnfree = true;  # forgive me Stallman senpai
-        overlays = extraOverlays ++ (attrValues self.overlays);
+        overlays = extraOverlays ++ (lib.attrValues self.overlays);
       };
       pkgs  = mkPkgs nixpkgs [ self.overlay ];
-      uPkgs = mkPkgs nixpkgs-unstable [];
+      pkgs' = mkPkgs nixpkgs-unstable [];
 
       lib = nixpkgs.lib.extend
         (self: super: { my = import ./lib { inherit pkgs inputs; lib = self; }; });
@@ -47,7 +45,7 @@
 
       overlay =
         final: prev: {
-          unstable = uPkgs;
+          unstable = pkgs';
           my = self.packages."${system}";
         };
 
@@ -55,17 +53,21 @@
         mapModules ./overlays import;
 
       packages."${system}" =
-        mapModules ./packages
-          (p: pkgs.callPackage p {});
+        mapModules ./packages (p: pkgs.callPackage p {});
 
       nixosModules =
-        { dotfiles = import ./.; }
-        // mapModulesRec ./modules import;
+        { dotfiles = import ./.; } // mapModulesRec ./modules import;
 
       nixosConfigurations =
         mapHosts ./hosts { inherit system; };
 
       devShell."${system}" =
         import ./shell.nix { inherit pkgs; };
+
+      templates.hey = {
+        path = ./.;
+        description = "A grossly incandescent nixos framework";
+      };
+      defaultTemplate = self.templates.hey;
     };
 }