os-config: use brave as default browser

configurations/profile/os/desktop/browser.nix

@@ -0,0 +1,24 @@
+{ materusArg, config, pkgs, lib, ... }:
+let
+  cfg = config.materus.profile.browser;
+in
+{
+  options.materus.profile.browser.enable = materusArg.pkgs.lib.mkBoolOpt false "Enable materus default browser config";
+  options.materus.profile.browser.default = lib.mkOption {
+    type = lib.types.enum [ "firefox" "brave" "vivaldi" ];
+    example = "vivaldi";
+    default = "brave";
+  };
+  options.materus.profile.browser.package = materusArg.pkgs.lib.mkPrivateVar
+    (if (cfg.default == "firefox") then config.materus.profile.packages.firefox else
+    if (cfg.default == "vivaldi") then pkgs.vivaldi else
+    if (cfg.default == "brave") then pkgs.brave else { });
+  config = lib.mkIf cfg.enable {
+
+    environment.systemPackages = [
+      config.materus.profile.browser.package
+    ];
+
+  };
+
+}

configurations/profile/os/desktop/default.nix

@@ -0,0 +1,6 @@
+{
+
+  imports = [
+    ./browser.nix
+  ];
+}