move system to module config

flake.lock

@@ -23,11 +23,11 @@
         "utils": "utils"
       },
       "locked": {
-        "lastModified": 1659398318,
-        "narHash": "sha256-5wovS14I/DNXwfiMP402Ut2kxI58CO1wD943fboWMDw=",
+        "lastModified": 1659484873,
+        "narHash": "sha256-6VoPiGyDdjBHOJ3IpS24lY1lrDiOHeuEefOFI0qz3WE=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "77648a07e459adff69b2c4033a77b2cababb5843",
+        "rev": "d8d9ff0b2df77defa10375c6665b51f0251c34d6",
         "type": "github"
       },
       "original": {
@@ -38,11 +38,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1659219666,
-        "narHash": "sha256-pzYr5fokQPHv7CmUXioOhhzDy/XyWOIXP4LZvv/T7Mk=",
+        "lastModified": 1659522808,
+        "narHash": "sha256-HBcM19nGhI3IWwPNVlYb0MZ8VW6iKp4JbAVkeIHVykc=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "7b9be38c7250b22d829ab6effdee90d5e40c6e5c",
+        "rev": "168d1c578909dc143ba52dbed661c36e76b12b36",
         "type": "github"
       },
       "original": {

flake.nix

@@ -18,7 +18,6 @@
       # FIXME replace with your hostname
       your-hostname = nixpkgs.lib.nixosSystem {
         pkgs = nixpkgs.legacyPackages.x86_64-linux;
-        system = "x86_64-linux";
 
         modules = [ ./nixos/configuration.nix ];
         # Pass inputs down to our config, so that they can consume flake inputs

nixos/hardware-configuration.nix

@@ -4,4 +4,7 @@
     device = "/dev/sda1";
     fsType = "ext4";
   };
+
+  # Set your system kind (needed for flakes)
+  nixpkgs.hostPlatform = "x86_64-linux";
 }