init

modules/laptop/virtualization.nix

@@ -0,0 +1,42 @@
+# Module: Virtualization
+# Description: Docker and VirtualBox virtualization support
+# Services: Docker daemon, VirtualBox
+
+{ config, lib, pkgs, customConfig, ... }:
+
+{
+  options.custom.virtualization = {
+    docker = {
+      enable = lib.mkEnableOption "Docker container runtime";
+      
+      dnsServers = lib.mkOption {
+        type = lib.types.listOf lib.types.str;
+        default = [ "172.17.0.1" ];
+        description = "DNS servers for Docker containers (points to dnscrypt-proxy)";
+      };
+    };
+    
+    virtualbox = {
+      enable = lib.mkEnableOption "VirtualBox virtualization";
+    };
+  };
+
+  config = lib.mkMerge [
+    (lib.mkIf config.custom.virtualization.docker.enable {
+      virtualisation.docker = {
+        enable = true;
+        daemon.settings = {
+          # Docker DNS points to dnscrypt-proxy configured in net.nix
+          dns = config.custom.virtualization.docker.dnsServers;
+        };
+      };
+      
+      users.users."${customConfig.username}".extraGroups = [ "docker" ];
+    })
+    
+    (lib.mkIf config.custom.virtualization.virtualbox.enable {
+      virtualisation.virtualbox.host.enable = true;
+      users.users."${customConfig.username}".extraGroups = [ "vboxusers" ];
+    })
+  ];
+}