From a7de454a762cd6bda49a33c8531a553d67bce231 Mon Sep 17 00:00:00 2001
From: Mira Ressel <aranea@aixah.de>
Date: Tue, 1 Sep 2020 17:08:01 +0200
Subject: [PATCH] nixos/qemu-vm: Update system.requiredKernelConfig

Verify that all kernel modules which are required for mounting
/nix/store in the VM are present.
---
 nixos/modules/virtualisation/qemu-vm.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/nixos/modules/virtualisation/qemu-vm.nix b/nixos/modules/virtualisation/qemu-vm.nix
index 7534fd744fd8..33da920e94cc 100644
--- a/nixos/modules/virtualisation/qemu-vm.nix
+++ b/nixos/modules/virtualisation/qemu-vm.nix
@@ -744,6 +744,8 @@ in
         (isEnabled "VIRTIO_PCI")
         (isEnabled "VIRTIO_NET")
         (isEnabled "EXT4_FS")
+        (isEnabled "NET_9P_VIRTIO")
+        (isEnabled "9P_FS")
         (isYes "BLK_DEV")
         (isYes "PCI")
         (isYes "NETDEVICES")
@@ -753,6 +755,8 @@ in
       ] ++ optionals (!cfg.graphics) [
         (isYes "SERIAL_8250_CONSOLE")
         (isYes "SERIAL_8250")
+      ] ++ optionals (cfg.writableStore) [
+        (isEnabled "OVERLAY_FS")
       ];
 
   };