fix nixos machines without hostPlatform

checks/backups/flake-module.nix

@@ -10,7 +10,6 @@
       {
         pkgs,
         lib,
-        config,
         ...
       }:
       let
@@ -30,6 +29,7 @@
         clan.core.networking.targetHost = "machine";
         networking.hostName = "machine";
         services.openssh.settings.UseDns = false;
+        nixpkgs.hostPlatform = "x86_64-linux";
 
         programs.ssh.knownHosts = {
           machine.hostNames = [ "machine" ];

checks/installation/flake-module.nix

@@ -20,13 +20,13 @@
 
         environment.etc."install-successful".text = "ok";
 
+        nixpkgs.hostPlatform = "x86_64-linux";
         boot.consoleLogLevel = lib.mkForce 100;
         boot.kernelParams = [ "boot.shell_on_fail" ];
       };
   };
   perSystem =
     {
-      nodes,
       pkgs,
       lib,
       ...

checks/nixos-documentation/flake-module.nix

@@ -18,6 +18,7 @@ in
       # Dummy file system
       fileSystems."/".device = "/dev/null";
       boot.loader.grub.device = "/dev/null";
+      nixpkgs.hostPlatform = "x86_64-linux";
       imports = [
         documentationModule
       ];