refactor: try to support cross compile nixos config

flake.nix

@@ -107,29 +107,14 @@
             }
           ];
         };
-      mkHomeConfiguration = user: host: {
-        name = user;
-        value = home-manager.lib.homeManagerConfiguration {
-          pkgs = import nixpkgs { system = "x86_64-linux"; };
-          modules = [
-            (import ./home).${user}.${host}
-            overlayModule
-          ] ++ sharedHmModules;
-          extraSpecialArgs = {
-            inherit inputs;
-          };
-        };
-      };
       mkNixos =
         {
-          system,
           modules,
           specialArgs ? { },
         }:
         nixpkgs.lib.nixosSystem {
-          inherit system;
           specialArgs = specialArgs // {
-            inherit inputs system;
+            inherit inputs;
           };
           modules = [
             self.nixosModules.default
@@ -147,11 +132,9 @@
       };
       homeManagerModules = import ./modules/home-manager;
 
-      homeConfigurations = builtins.listToAttrs [ (mkHomeConfiguration "xin" "calcite") ];
-
       colmenaHive = inputs.colmena.lib.makeHive {
         meta = {
-          nixpkgs = import nixpkgs { system = "x86_64-linux"; };
+          nixpkgs = import nixpkgs { localSystem = "x86_64-linux"; };
           specialArgs = {
             inherit inputs;
           };
@@ -163,17 +146,13 @@
             deployment.targetHost = "49.13.13.122";
             deployment.buildOnTarget = true;
 
-            imports = [
-              { nixpkgs.system = "aarch64-linux"; }
-              machines/massicot
-            ] ++ sharedColmenaModules;
+            imports = [ machines/massicot ] ++ sharedColmenaModules;
           };
 
         tok-00 =
           { ... }:
           {
             imports = [ machines/dolomite ] ++ sharedColmenaModules;
-            nixpkgs.system = "x86_64-linux";
             networking.hostName = "tok-00";
             system.stateVersion = "23.11";
             deployment = {
@@ -187,7 +166,6 @@
           { ... }:
           {
             imports = [ machines/dolomite ] ++ sharedColmenaModules;
-            nixpkgs.system = "x86_64-linux";
             networking.hostName = "la-00";
             system.stateVersion = "21.05";
             deployment = {
@@ -204,7 +182,6 @@
               targetHost = "raspite.local";
               buildOnTarget = false;
             };
-            nixpkgs.system = "aarch64-linux";
             imports = [
               "${nixpkgs}/nixos/modules/installer/sd-card/sd-image-aarch64.nix"
               nixos-hardware.nixosModules.raspberry-pi-4
@@ -221,26 +198,28 @@
               targetPort = 22;
               buildOnTarget = false;
             };
-            nixpkgs.system = "x86_64-linux";
           };
       };
 
-      nixosConfigurations = {
-        calcite = mkNixos {
-          system = "x86_64-linux";
-          modules = [
-            nixos-hardware.nixosModules.asus-zephyrus-ga401
-            machines/calcite/configuration.nix
-            (mkHome "xin" "calcite")
-          ];
-        };
-      } // self.colmenaHive.nodes;
-
     }
     // flake-utils.lib.eachDefaultSystem (
       system:
       let
-        pkgs = nixpkgs.legacyPackages.${system};
+        pkgs = import nixpkgs { localSystem = system; };
+
+        mkHomeConfiguration = user: host: {
+          name = user;
+          value = home-manager.lib.homeManagerConfiguration {
+            inherit pkgs;
+            modules = [
+              (import ./home).${user}.${host}
+              overlayModule
+            ] ++ sharedHmModules;
+            extraSpecialArgs = {
+              inherit inputs;
+            };
+          };
+        };
       in
       {
         devShells = {
@@ -259,7 +238,18 @@
 
         packages = {
           nixvim = my-nixvim.packages.${system}.default;
+          nixosConfigurations = {
+            calcite = mkNixos {
+              modules = [
+                nixos-hardware.nixosModules.asus-zephyrus-ga401
+                machines/calcite/configuration.nix
+                (mkHome "xin" "calcite")
+              ];
+            };
+          } // self.colmenaHive.nodes;
         };
+
+        homeConfigurations = builtins.listToAttrs [ (mkHomeConfiguration "xin" "calcite") ];
       }
     );
 }

garnix.yaml

@@ -0,0 +1,11 @@
+builds:
+  exclude: []
+  include:
+  - '*.x86_64-linux.*'
+  - defaultPackage.x86_64-linux
+  - devShell.x86_64-linux
+  - homeConfigurations.*
+  - darwinConfigurations.*
+  - nixosConfigurations.*
+  - nixosConfigurations.aarch64-linux.calcite
+  - homeConfigurations.aarch64-linux.xin

machines/dolomite/bandwagon.nix

@@ -16,6 +16,7 @@ in
   };
 
   config = lib.mkIf cfg {
+    nixpkgs.hostPlatform = "x86_64-linux";
     boot.initrd.availableKernelModules = [
       "ata_piix"
       "xhci_pci"

machines/dolomite/lightsail.nix

@@ -25,6 +25,8 @@ in
   };
 
   config = mkIf config.isLightsail {
+    nixpkgs.hostPlatform = "x86_64-linux";
+
     boot.loader.grub.device = "/dev/nvme0n1";
 
     # from nixpkgs amazon-image.nix

machines/massicot/hardware-configuration.nix

@@ -19,5 +19,5 @@
     device = "/dev/sda1";
     fsType = "ext4";
   };
-
+  nixpkgs.hostPlatform = "aarch64-linux";
 }

machines/raspite/configuration.nix

@@ -17,6 +17,8 @@
     })
   ];
 
+  nixpkgs.hostPlatform = "aarch64-linux";
+
   environment.systemPackages = with pkgs; [
     git
     libraspberrypi