add iosevka, upgrade kernel to testing

logical/jarvis.nix

@@ -2,7 +2,7 @@
 # your system.  Help is available in the configuration.nix(5) man page
 # and in the NixOS manual (accessible by running ‘nixos-help’).
 
-{ config, pkgs, ... }:
+{ config, pkgs, lib, ... }:
 
 {
   imports =
@@ -17,6 +17,7 @@
 
   # The NixOS release to be compatible with for stateful data such as databases.
   system.stateVersion = "17.03";
+  networking.enableIPv6 = lib.mkOverride 30 true;
 
 
   services.xserver.displayManager.sessionCommands = ''

physical/xps9360.nix

@@ -13,7 +13,7 @@
   boot.extraModulePackages = [ ];
   boot.blacklistedKernelModules = ["psmouse"];
   linux_nvme = {
-      basekpkgs = pkgs.linuxPackages_4_9;
+      basekpkgs = pkgs.linuxPackages_testing;
       gofaster = true;
       nvmepatch = true;
   };

roles/graphical.nix

@@ -42,6 +42,7 @@ in
       source-code-pro
       ubuntu_font_family  # Ubuntu fonts
       source-han-sans-japanese
+      iosevka
     ];
   };
   # spotify