From cccad986fe04085c9884de17147a723e3eb636fc Mon Sep 17 00:00:00 2001
From: Jay Looney <jay.m.looney@gmail.com>
Date: Thu, 10 Jul 2025 08:53:27 -0500
Subject: [PATCH] feat: add a new laptop host (Asus Zenbook 3)

---
 flake.nix                               |  4 +++
 hosts/cobalt/configuration.nix          | 29 +++++++++++++++++
 hosts/cobalt/default.nix                | 11 +++++++
 hosts/cobalt/hardware-configuration.nix | 41 +++++++++++++++++++++++++
 4 files changed, 85 insertions(+)
 create mode 100644 hosts/cobalt/configuration.nix
 create mode 100644 hosts/cobalt/default.nix
 create mode 100644 hosts/cobalt/hardware-configuration.nix

diff --git a/flake.nix b/flake.nix
index c0586ac..1c2fa13 100644
--- a/flake.nix
+++ b/flake.nix
@@ -48,6 +48,10 @@
         #extraModules = [ (import ./overlays) ];
         extraModules = [ stylix.nixosModules.stylix ];
       };
+      cobalt = mkSystem {
+        hostname = "cobalt";
+        users = [ "jml" ];
+      };
       # `nix build .#nixosConfigurations.installIso.config.system.build.isoImage`
       # https://github.com/nix-community/nixos-generators
       installIso = nixpkgs.lib.nixosSystem {
diff --git a/hosts/cobalt/configuration.nix b/hosts/cobalt/configuration.nix
new file mode 100644
index 0000000..bea1e3c
--- /dev/null
+++ b/hosts/cobalt/configuration.nix
@@ -0,0 +1,29 @@
+# Edit this configuration file to define what should be installed on
+# your system.  Help is available in the configuration.nix(5) man page
+# and in the NixOS manual (accessible by running ‘nixos-help’).
+
+{ config, pkgs, ... }:
+
+{
+  networking.hostName = "cobalt"; # Define your hostname.
+  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
+  networking.networkmanager.enable = true;
+
+  # Desktop stuff specific to this device
+  services.xserver.enable = true;
+  services.xserver.displayManager.lightdm.enable = true;
+  services.xserver.desktopManager.pantheon.enable = true;
+  services.xserver.xkb = {
+    layout = "us";
+    variant = "";
+  };
+
+  fonts.packages = with pkgs; [
+    nerd-fonts.fira-code
+    nerd-fonts.iosevka
+    atkinson-hyperlegible
+  ];
+
+
+  system.stateVersion = "25.05";
+}
diff --git a/hosts/cobalt/default.nix b/hosts/cobalt/default.nix
new file mode 100644
index 0000000..bffc73e
--- /dev/null
+++ b/hosts/cobalt/default.nix
@@ -0,0 +1,11 @@
+{ inputs, ... }:
+{
+  imports = [
+    ../../modules/nixos/base.nix
+    ../../modules/nixos/audio.nix
+    #../../modules/nixos/desktop.nix
+    # https://github.com/NixOS/nixos-hardware/blob/master/README.md#using-nix-flakes-support
+    ./hardware-configuration.nix
+    ./configuration.nix
+  ];
+}
diff --git a/hosts/cobalt/hardware-configuration.nix b/hosts/cobalt/hardware-configuration.nix
new file mode 100644
index 0000000..da7f0e2
--- /dev/null
+++ b/hosts/cobalt/hardware-configuration.nix
@@ -0,0 +1,41 @@
+# 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" "usb_storage" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/959b3c06-58a2-45be-b2d6-275c489c31f8";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/2EC2-D03D";
+      fsType = "vfat";
+      options = [ "fmask=0077" "dmask=0077" ];
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/0239ee2a-484b-4a17-b1e9-02fd35df851f"; }
+    ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp0s20f0u1u3.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wlp2s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}