Trying out a seperate hosts flake

flake.lock

@@ -21,6 +21,20 @@
         "type": "github"
       }
     },
+    "hosts": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "narHash": "sha256-LbajVWkqSpZt2SW7tGqxIn391hCT02AyokxFuNyA/4w=",
+        "path": "../fudo-hosts",
+        "type": "path"
+      },
+      "original": {
+        "path": "../fudo-hosts",
+        "type": "path"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1628427351,
@@ -36,10 +50,26 @@
         "type": "indirect"
       }
     },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1628427351,
+        "narHash": "sha256-WuZUIQ07AvRw+T9wvQ3qFf8MXmKZ+ktZz9drNgWXDbs=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "348bc5de8bca09c624f5c4975f538684da4713d2",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-21.05",
+        "type": "indirect"
+      }
+    },
     "root": {
       "inputs": {
         "home-manager": "home-manager",
-        "nixpkgs": "nixpkgs"
+        "hosts": "hosts",
+        "nixpkgs": "nixpkgs_2"
       }
     }
   },

flake.nix

@@ -3,24 +3,17 @@
 
   inputs = {
     nixpkgs.url = "nixpkgs/nixos-21.05";
+
+    hosts.url = "path:../fudo-hosts";
+
     home-manager.url = "github:nix-community/home-manager/release-21.05";
     home-manager.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs = { nixpkgs, home-manager, ... }:
+  outputs = { nixpkgs, hosts, home-manager, ... }:
     let
-      hosts-path = ./config/hosts;
-      lib = nixpkgs.lib;
-      is-nix-file = filename: type: (builtins.match ".+.nix$" filename) != null;
-      is-regular-file = filename: type: type == "regular" || type == "link";
-      hostname-from-file = filename:
-        builtins.replaceStrings [ ".nix" ] [ "" ] filename;
-      hosts = map hostname-from-file (lib.attrNames (lib.filterAttrs is-nix-file
-        (lib.filterAttrs is-regular-file (builtins.readDir hosts-path))));
-      hostsOpts = lib.listToAttrs (hostname:
-        lib.nameValuePair hostname (import hosts-path + "/${hostname}.nix"));
-
       pkgs = import nixpkgs { };
+      lib = nixpkgs.lib;
 
     in {
       nixConfigurations = lib.mapAttrs (hostname: hostOpts:
@@ -34,6 +27,6 @@
               include-secrets = true;
             })
           ];
-        }) hostsOpts;
+        }) hosts.host-configs;
     };
 }