feat(tazjin/nixos): Add system configuration for zamalek

This is my new Huawei MateBook X.

Change-Id: I32a8b77dd8f53b3c89bf63f448cd2880f9a457b7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5554
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: tazjin <tazjin@tvl.su>

users/tazjin/nixos/zamalek/default.nix

@@ -0,0 +1,71 @@
+# zamalek is my Huawei MateBook X (unknown year)
+{ depot, lib, pkgs, ... }:
+
+config:
+let
+  mod = name: depot.path + ("/ops/modules/" + name);
+  usermod = name: depot.path + ("/users/tazjin/nixos/modules/" + name);
+
+  zdevice = device: {
+    inherit device;
+    fsType = "zfs";
+  };
+in
+{
+  imports = [
+    (usermod "desktop.nix")
+    (usermod "fonts.nix")
+    (usermod "home-config.nix")
+    (usermod "laptop.nix")
+    (usermod "persistence.nix")
+    (usermod "physical.nix")
+    (usermod "zerotier.nix")
+
+    (depot.third_party.impermanence + "/nixos.nix")
+    (pkgs.home-manager.src + "/nixos")
+  ];
+
+  tvl.cache.enable = true;
+
+  boot = {
+    initrd.availableKernelModules = [ "nvme" "xhci_pci" ];
+    loader.systemd-boot.enable = true;
+    loader.efi.canTouchEfiVariables = true;
+    supportedFilesystems = [ "zfs" ];
+    zfs.devNodes = "/dev/";
+  };
+
+  fileSystems = {
+    "/" = zdevice "zpool/ephemeral/root";
+    "/home" = zdevice "zpool/ephemeral/home";
+    "/persist" = zdevice "zpool/persistent/data" // { neededForBoot = true; };
+    "/nix" = zdevice "zpool/persistent/nix";
+    "/depot" = zdevice "zpool/persistent/depot";
+
+    "/boot" = {
+      device = "/dev/disk/by-uuid/2487-3908";
+      fsType = "vfat";
+    };
+  };
+
+  networking = {
+    hostName = "zamalek";
+    domain = "tvl.su";
+    hostId = "ee399356";
+    networkmanager.enable = true;
+
+    nameservers = [
+      "8.8.8.8"
+      "8.8.4.4"
+    ];
+  };
+
+  hardware = {
+    cpu.intel.updateMicrocode = true;
+    bluetooth.enable = true;
+    enableRedistributableFirmware = true;
+    opengl.enable = true;
+  };
+
+  system.stateVersion = "21.11";
+}