From 7a8597cdefe157eaf105110e11711a90b3598d3a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Max=20K=C3=A4nner?= <max.kaenner@gmail.com>
Date: Sat, 28 Dec 2024 23:32:52 +0100
Subject: [PATCH] create qemu module

---
 hosts/MaxNixosLaptop/configuration.nix | 21 ----------------
 modules/nixos/default.nix              |  5 +++-
 modules/nixos/qemu.nix                 | 35 ++++++++++++++++++++++++++
 3 files changed, 39 insertions(+), 22 deletions(-)
 create mode 100644 modules/nixos/qemu.nix

diff --git a/hosts/MaxNixosLaptop/configuration.nix b/hosts/MaxNixosLaptop/configuration.nix
index 7a67eb6..5cf30c5 100644
--- a/hosts/MaxNixosLaptop/configuration.nix
+++ b/hosts/MaxNixosLaptop/configuration.nix
@@ -86,27 +86,6 @@
   security.polkit.enable = true;
   environment.sessionVariables.NIXOS_OZONE_WL = "1";
 
-  virtualisation = {
-    libvirtd = {
-      enable = true;
-      qemu = {
-        package = pkgs.qemu_kvm;
-        runAsRoot = true;
-        swtpm.enable = true;
-        ovmf = {
-          enable = true;
-          packages = [
-            (pkgs.OVMF.override {
-              secureBoot = true;
-              tpmSupport = true;
-            })
-            .fd
-          ];
-        };
-      };
-    };
-  };
-
   # List services that you want to enable:
 
   # fingerprint unlock
diff --git a/modules/nixos/default.nix b/modules/nixos/default.nix
index fe36a3d..0902f2c 100644
--- a/modules/nixos/default.nix
+++ b/modules/nixos/default.nix
@@ -1,11 +1,12 @@
 {
   lib,
   config,
+  system,
   ...
 }: let
   cfg = config.myConfig;
 in {
-  imports = [./bootloader.nix ./locale.nix ./greetd.nix ./rebuild.nix ./sops.nix ./sway.nix ./wifi.nix ./music.nix ./cups.nix ./gpu/amd.nix ./touch.nix ./cache.nix ./nix.nix ./update.nix ./podman.nix];
+  imports = [./bootloader.nix ./locale.nix ./greetd.nix ./rebuild.nix ./sops.nix ./sway.nix ./wifi.nix ./music.nix ./cups.nix ./gpu/amd.nix ./touch.nix ./cache.nix ./nix.nix ./update.nix ./podman.nix ./qemu.nix];
 
   options.myConfig = {
     enable = lib.mkEnableOption "my custom config";
@@ -27,6 +28,8 @@ in {
     cache.enable = true;
     autoUpdate.enable = true;
     podman.enable = true;
+    qemu.enable = true;
+    qemu.kvm = lib.mkIf (system == "x86_64-linux") true;
 
     greetd.enable = lib.mkIf cfg.desktop true;
     sway.enable = lib.mkIf cfg.desktop true;
diff --git a/modules/nixos/qemu.nix b/modules/nixos/qemu.nix
new file mode 100644
index 0000000..2542084
--- /dev/null
+++ b/modules/nixos/qemu.nix
@@ -0,0 +1,35 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}: let
+  cfg = config.myConfig.qemu;
+in {
+  options.myConfig.qemu = {
+    enable = lib.mkEnableOption "qemu";
+    kvm = lib.mkEnableOption "kvm for faster emulation of x86";
+  };
+
+  config = lib.mkIf cfg.enable {
+    virtualisation.
+    libvirtd = {
+      enable = true;
+      qemu = {
+        package = lib.mkIf cfg.kvm pkgs.qemu_kvm;
+        runAsRoot = true;
+        swtpm.enable = true;
+        ovmf = {
+          enable = true;
+          packages = [
+            (pkgs.OVMF.override {
+              secureBoot = true;
+              tpmSupport = true;
+            })
+            .fd
+          ];
+        };
+      };
+    };
+  };
+}