diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..8d99e2d
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,14 @@
+{ config, pkgs, ... }:
+
+{
+  inputs.nixpkgs.url = "inputs.nixpkgs.url = github:NixOS/nixpkgs/nixos-20.09";
+
+  outputs = { nixpkgs, ... }: {
+  nixosConfigurations = {
+    reg = nixpkgs.lib.nixosSystem {
+      modules = [ ./reg/configuration.nix ];
+      system = "x86_64-linux";
+    };
+  };
+};
+}
\ No newline at end of file
diff --git a/reg/common.nix b/reg/common.nix
index ff9311b..18ce448 100644
--- a/reg/common.nix
+++ b/reg/common.nix
@@ -16,7 +16,7 @@
   networking.firewall.allowedUDPPorts = [ ];
 
   environment.systemPackages = with pkgs; [
-    wget kakoune htop git
+    wget kakoune htop git dnsutils
   ];
 
   users.mutableUsers = false;
diff --git a/reg/de.nix b/reg/de.nix
index 947ab0d..eb1bbfc 100644
--- a/reg/de.nix
+++ b/reg/de.nix
@@ -9,6 +9,8 @@
     ./chromium.nix
     ./audio.nix
     ./torbrowser.nix
+    ./pithos.nix
+    ./vscodium.nix
   ];
 
   # allow specific unfree packages
@@ -16,9 +18,13 @@
     "tigervnc" "font-bh-lucidatypewriter" # tigervnc
   ];
 
+  # vulkan
+  hardware.opengl.driSupport = true;
+  hardware.opengl.driSupport32Bit = true;
+
   # Applications
   users.users.googlebot.packages = with pkgs; [
-    firefox chromium keepassxc mumble tigervnc bluez-tools vscodium
+    firefox chromium keepassxc mumble tigervnc bluez-tools vscodium element-desktop mpv
   ];
 
   # Networking
diff --git a/reg/hardware-configuration.nix b/reg/hardware-configuration.nix
new file mode 100644
index 0000000..221faa6
--- /dev/null
+++ b/reg/hardware-configuration.nix
@@ -0,0 +1,38 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" ];
+  boot.initrd.kernelModules = [ "dm-snapshot" ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/b3a2906b-e9a5-45bd-aac5-960297437fe9";
+      fsType = "btrfs";
+      options = [ "subvol=root" "noatime" "nodiratime" "discard" ];
+    };
+
+  fileSystems."/home" =
+    { device = "/dev/disk/by-uuid/b3a2906b-e9a5-45bd-aac5-960297437fe9";
+      fsType = "btrfs";
+      options = [ "subvol=home" "noatime" "nodiratime" "discard" ];
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/6C41-24A0";
+      fsType = "vfat";
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/34ec322f-79c3-4993-a073-ef1da3c6ef51"; }
+    ];
+
+  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
+}
diff --git a/reg/pithos.nix b/reg/pithos.nix
new file mode 100644
index 0000000..12d7c77
--- /dev/null
+++ b/reg/pithos.nix
@@ -0,0 +1,47 @@
+{ config, pkgs, ... }:
+
+#let
+#  pithos = pkgs.pithos.overrideAttrs (old: rec {
+#    pname = "pithos";
+#    version = "1.5.1";
+#    src = pkgs.fetchFromGitHub {
+#      owner = pname;
+#      repo  = pname;
+#      rev = version;
+#      sha256 = "il7OAALpHFZ6wjco9Asp04zWHCD8Ni+iBdiJWcMiQA4=";
+#    };
+#  });
+#in
+{
+  nixpkgs.overlays = [
+    (self: super: {
+      pithos = super.pithos.overrideAttrs (old: rec {
+        pname = "pithos";
+        version = "1.5.1";
+        src = super.fetchFromGitHub {
+          owner = pname;
+          repo  = pname;
+          rev = version;
+          sha256 = "il7OAALpHFZ6wjco9Asp04zWHCD8Ni+iBdiJWcMiQA4=";
+        };
+      });
+    })
+  ];
+
+#  nixpkgs.config.packageOverrides = pkgs: {
+#    pithos = pkgs.pithos.overrideAttrs (old: rec {
+#      pname = "pithos";
+#      version = "1.5.1";
+#      pithosSrc = pkgs.fetchFromGitHub {
+#        owner = pname;
+#        repo  = pname;
+#        rev = version;
+#        sha256 = "il7OAALpHFZ6wjco9Asp04zWHCD8Ni+iBdiJWcMiQA4=";
+#      };
+#    });
+#  };
+
+  users.users.googlebot.packages = with pkgs; [
+    pithos
+  ];
+}
diff --git a/reg/torbrowser.nix b/reg/torbrowser.nix
index 9ca6ae8..c3de457 100644
--- a/reg/torbrowser.nix
+++ b/reg/torbrowser.nix
@@ -1,27 +1,20 @@
 { config, pkgs, ... }:
 
 {
-#  nixpkgs.config.packageOverrides = pkgs: {
-#    tor-browser-bundle-bin = pkgs.tor-browser-bundle-bin.overrideAttrs (old: {
-#      version = "10.0.10";
-#      src = builtins.fetchurl {
-#        url = "https://dist.torproject.org/torbrowser/10.0.10/tor-browser-linux64-10.0.10_en-US.tar.xz";
-#        sha256 = "vYWZ+NsGN8YH5O61+zrUjlFv3rieaBqjBQ+a18sQcZg=";
-#      };
-#    });
-#  };
-#
-#  nixpkgs.overlays = [ (
-#  self: super:
-#  {
-#    tor-browser-bundle-bin = super.tor-browser-bundle-bin.overrideAttrs (old: {
-#      version = "10.0.10";
-#      lang = "en-US";
-#      src = super.fetchurl {
-#        url = "https://dist.torproject.org/torbrowser/10.0.10/tor-browser-linux64-10.0.10_en-US.tar.xz";
-#        sha256 = "vYWZ+NsGN8YH5O61+zrUjlFv3rieaBqjBQ+a18sQcZg=";
-#      };
-#    });
-#  }
-#  ) ];  
+  nixpkgs.overlays = [
+    (self: super: {
+      tor-browser-bundle-bin = super.tor-browser-bundle-bin.overrideAttrs (old: rec {
+        version = "10.0.10";
+        lang = "en-US";
+        src = pkgs.fetchurl {
+          url = "https://dist.torproject.org/torbrowser/${version}/tor-browser-linux64-${version}_${lang}.tar.xz";
+          sha256 = "vYWZ+NsGN8YH5O61+zrUjlFv3rieaBqjBQ+a18sQcZg=";
+        };
+      });
+    })
+  ];
+
+  users.users.googlebot.packages = with pkgs; [
+    tor-browser-bundle-bin
+  ];
 }
diff --git a/reg/vscodium.nix b/reg/vscodium.nix
new file mode 100644
index 0000000..e8a0bf2
--- /dev/null
+++ b/reg/vscodium.nix
@@ -0,0 +1,18 @@
+{ config, pkgs, ... }:
+
+let
+  extensions = with pkgs.vscode-extensions; [
+    bbenoist.Nix # nix syntax support
+#    arrterian.nix-env-selector  # nix dev envs
+  ];
+
+  vscodium-with-extensions = pkgs.vscode-with-extensions.override {
+    vscode = pkgs.vscodium;
+    vscodeExtensions = extensions;
+  };
+in
+{
+  users.users.googlebot.packages = [
+    vscodium-with-extensions
+  ];
+}