diff options
Diffstat (limited to 'nixpkgs/nixos/modules/virtualisation/qemu-vm.nix')
| -rw-r--r-- | nixpkgs/nixos/modules/virtualisation/qemu-vm.nix | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/nixpkgs/nixos/modules/virtualisation/qemu-vm.nix b/nixpkgs/nixos/modules/virtualisation/qemu-vm.nix index 74c3e1ecd03f..e0004df6f6b2 100644 --- a/nixpkgs/nixos/modules/virtualisation/qemu-vm.nix +++ b/nixpkgs/nixos/modules/virtualisation/qemu-vm.nix @@ -1121,11 +1121,12 @@ in }) cfg.emptyDiskImages) ]; - # Use mkVMOverride to enable building test VMs (e.g. via `nixos-rebuild - # build-vm`) of a system configuration, where the regular value for the - # `fileSystems' attribute should be disregarded (since those filesystems - # don't necessarily exist in the VM). - fileSystems = mkVMOverride cfg.fileSystems; + # By default, use mkVMOverride to enable building test VMs (e.g. via + # `nixos-rebuild build-vm`) of a system configuration, where the regular + # value for the `fileSystems' attribute should be disregarded (since those + # filesystems don't necessarily exist in the VM). You can disable this + # override by setting `virtualisation.fileSystems = lib.mkForce { };`. + fileSystems = lib.mkIf (cfg.fileSystems != { }) (mkVMOverride cfg.fileSystems); virtualisation.fileSystems = let mkSharedDir = tag: share: |