Multi system and pkgs cleanup

modules/nixos/system/nix/default.nix

@@ -3,12 +3,8 @@
     permittedInsecurePackages = [ ];
     allowUnfree = true;
     android_sdk.accept_license = true;
-    packageOverrides = pkgs: rec {
-      custom = import ../../../../packages { inherit pkgs; };
-    };
-
   };
-  nixpkgs.overlays = import ../../../../overlays { inherit inputs pkgs; };
+  nixpkgs.overlays = import ../../../../overlays { inherit inputs; };
   nix = {
     package = pkgs.nixVersions.stable;
     extraOptions = ''

modules/shared/syscfg/default.nix

@@ -1,11 +1,15 @@
-{ inputs, lib, ... }:
+{ lib, ... }:
 let
   systemsDir = ../../../systems;
-  systemNames = lib.attrNames (lib.filterAttrs 
-    (name: type: type == "directory" && builtins.pathExists (systemsDir + "/${name}/cfg.nix")) 
-    (builtins.readDir systemsDir));
-
-
+  isIgnoredSystemDir = name: lib.hasPrefix "_" name || lib.hasPrefix "." name;
+  systemNames = lib.attrNames (
+    lib.filterAttrs
+      (name: type:
+        type == "directory"
+        && !isIgnoredSystemDir name
+        && builtins.pathExists (systemsDir + "/${name}/cfg.nix"))
+      (builtins.readDir systemsDir)
+  );
 in with lib; {
   options.usercfg = import ./user.nix  {inherit lib;};
   options.syscfg = {
@@ -14,6 +18,11 @@ in with lib; {
       type = types.enum [ "nixos" "macos" "home" ];
       default = "nixos";
     };
+    system = mkOption {
+      type = types.enum [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
+      default = "x86_64-linux";
+      description = "Nix platform used to evaluate this host.";
+    };
     defaultUser = mkOption { type = types.str; };
     make = import ./make.nix {inherit lib;};
     net = import ./net.nix {inherit lib;};