flake: move nixosConfigurations setup to hosts/

flake.nix

@@ -5,26 +5,17 @@
     flake-parts.url = "github:hercules-ci/flake-parts";
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     agenix.url = "github:ryantm/agenix";
-
     typhon.url = "github:typhon-ci/typhon";
   };
 
-  outputs = {
-    self,
-    flake-parts,
-    ...
-  } @ inputs:
-    flake-parts.lib.mkFlake {inherit inputs;} {
+  outputs = inputs:
+    inputs.flake-parts.lib.mkFlake {inherit inputs;} {
       systems = ["x86_64-linux"];
-
+      imports = [./hosts];
       perSystem = {pkgs, ...}: {
         devShells.default = pkgs.mkShell {
           buildInputs = [pkgs.alejandra];
         };
       };
-
-      flake = {
-        nixosConfigurations = import ./hosts {inherit self;};
-      };
     };
 }

hosts/default.nix

@@ -14,8 +14,14 @@
     ...
   } @ args:
     mkSystem {
-      inherit system;
-      modules = [{networking.hostName = hostname;}] ++ args.modules or [];
+      modules =
+        [
+          {
+            networking.hostName = hostname;
+            nixpkgs.hostPlatform = system;
+          }
+        ]
+        ++ args.modules or [];
       specialArgs = {inherit inputs self;} // args.specialArgs or {};
     };
 
@@ -23,15 +29,19 @@
     inputs.agenix.nixosModules.default
   ];
 in {
-  caesar = mkNixosSystem {
-    hostname = "caesar";
-    system = "x86_64-linux";
-    modules =
-      [
-        ./caesar
-        ../modules/nix-daemon.nix
-        ../modules/openssh.nix
-      ]
-      ++ sharedModules;
+  flake.nixosConfigurations = {
+    caesar = mkNixosSystem {
+      hostname = "caesar";
+      system = "x86_64-linux";
+      modules = builtins.concatLists [
+        [
+          ./caesar
+          ../modules/nix-daemon.nix
+          ../modules/openssh.nix
+        ]
+
+        [sharedModules]
+      ];
+    };
   };
 }