add base pkg modules

modules/linux/base-pkgs.nix

@@ -0,0 +1,7 @@
+{ pkgs, ... }
+  environment.systemPackages = builtins.attrValues {
+    inherit (pkgs)
+      xdg-utils
+    ;
+  };
+}

modules/linux/fonts.nix

@@ -0,0 +1,22 @@
+{ pkgs, ... }: {
+  fonts = {
+    enableDefaultPackages = true;
+
+    packages = builtins.attrValues {
+      inherit (pkgs)
+        dejavu_fonts
+        noto-fonts
+        noto-fonts-cjk-sans
+        material-symbols
+        font-awesome
+        corefonts
+        vistafonts
+      ;
+    }
+  };
+
+  nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
+    "corefonts"
+    "vista-fonts"
+  ];
+}