From 11e5207a2d20d4eb557bc60339e193283141d0d9 Mon Sep 17 00:00:00 2001
From: Shea Levy <shea@shealevy.com>
Date: Mon, 6 Aug 2012 17:10:54 -0400
Subject: [PATCH] qemu requires VIRTIO_BLK (and dependencies) for virtio drives

---
 modules/virtualisation/qemu-vm.nix | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/modules/virtualisation/qemu-vm.nix b/modules/virtualisation/qemu-vm.nix
index 0e9804751be..e0561d479cf 100644
--- a/modules/virtualisation/qemu-vm.nix
+++ b/modules/virtualisation/qemu-vm.nix
@@ -386,8 +386,14 @@ in
   # Wireless won't work in the VM.
   networking.wireless.enable = mkOverride 50 false;
 
-  system.requiredKernelConfig = optional (!cfg.graphics) (with config.lib.kernelConfig; [
+  system.requiredKernelConfig = with config.lib.kernelConfig; [
+    (isEnabled "VIRTIO_BLK")
+    (isEnabled "VIRTIO_PCI")
+    (isYes "BLK_DEV")
+    (isYes "PCI")
+    (isYes "EXPERIMENTAL")
+  ] ++ optional (!cfg.graphics) [
     (isYes "SERIAL_8250_CONSOLE")
     (isYes "SERIAL_8250")
-  ]);
+  ];
 }