From 43fcffba37964f98c88232d9a87b291b64b148df Mon Sep 17 00:00:00 2001
From: Sravan Balaji <balajsra@umich.edu>
Date: Sun, 24 Mar 2024 21:02:39 -0400
Subject: [PATCH] Switchable Hardware Configuration

- Move generated hardware-configuration.nix files to hardware folder
- Add flake.nix option to select which hardware configuration to use
---
 flake.nix                                     |  1 +
 .../proxmox-vm.nix                            |  0
 hardware/qemu-vm.nix                          | 24 +++++++++++++++++++
 profiles/personal/configuration.nix           |  2 +-
 4 files changed, 26 insertions(+), 1 deletion(-)
 rename system/hardware-configuration.nix => hardware/proxmox-vm.nix (100%)
 create mode 100644 hardware/qemu-vm.nix

diff --git a/flake.nix b/flake.nix
index db1cf61..0790c0b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -26,6 +26,7 @@
         locale = "en_US.UTF-8";                # Locale
         diskoConfig = "luks-btrfs-subvolumes"; # Select the disko config that was used to partition drive
         desktopEnvironment = "gnome";          # Window Manager / Desktop Environment to use
+        hardwareConfiguration = "qemu-vm";     # Select the hardware config from hardware directory
       };
 
       # --- USER SETTINGS --- #
diff --git a/system/hardware-configuration.nix b/hardware/proxmox-vm.nix
similarity index 100%
rename from system/hardware-configuration.nix
rename to hardware/proxmox-vm.nix
diff --git a/hardware/qemu-vm.nix b/hardware/qemu-vm.nix
new file mode 100644
index 0000000..0759c10
--- /dev/null
+++ b/hardware/qemu-vm.nix
@@ -0,0 +1,24 @@
+# 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 + "/profiles/qemu-guest.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "ahci" "xhci_pci" "virtio_pci" "sr_mod" "virtio_blk" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  # 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.enp1s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}
diff --git a/profiles/personal/configuration.nix b/profiles/personal/configuration.nix
index a0c24d1..4ee592a 100644
--- a/profiles/personal/configuration.nix
+++ b/profiles/personal/configuration.nix
@@ -6,7 +6,7 @@
 
 {
   imports = [
-    ../../system/hardware-configuration.nix
+    (./. + "../../hardware" + ("/" + systemSettings.hardwareConfiguration) + ".nix")
     ../../system/hardware/kernel.nix
     ../../system/hardware/bluetooth.nix
     ../../system/hardware/opengl.nix