nixos: Move build-vm into virtualisation.vmVariant

... which is like a specialisation, but for nixos-rebuild build-vm

1 files changed, 46 insertions, 0 deletions

diff --git a/nixos/modules/virtualisation/build-vm.nix b/nixos/modules/virtualisation/build-vm.nix
new file mode 100644
index 00000000000..d856b1b502b
--- /dev/null
+++ b/nixos/modules/virtualisation/build-vm.nix
@@ -0,0 +1,46 @@
+{ extendModules, lib, ... }:
+let
+
+  inherit (lib)
+    mkOption
+    ;
+
+  vmVariant = extendModules {
+    modules = [ ./qemu-vm.nix ];
+  };
+
+  vmVariantWithBootLoader = vmVariant.extendModules {
+    modules = [
+      ({ config, ... }: {
+        _file = "nixos/default.nix##vmWithBootLoader";
+        virtualisation.useBootLoader = true;
+        virtualisation.useEFIBoot =
+          config.boot.loader.systemd-boot.enable ||
+          config.boot.loader.efi.canTouchEfiVariables;
+      })
+    ];
+  };
+in
+{
+  options = {
+
+    virtualisation.vmVariant = mkOption {
+      description = ''
+        Machine configuration to be added for the vm script produced by <literal>nixos-rebuild build-vm</literal>.
+      '';
+      inherit (vmVariant) type;
+      default = {};
+      visible = "shallow";
+    };
+
+    virtualisation.vmVariantWithBootLoader = mkOption {
+      description = ''
+        Machine configuration to be added for the vm script produced by <literal>nixos-rebuild build-vm-with-bootloader</literal>.
+      '';
+      inherit (vmVariantWithBootLoader) type;
+      default = {};
+      visible = "shallow";
+    };
+
+  };
+}