2 files changed, 23 insertions, 0 deletions
diff --git a/modules/base.nix b/modules/base.nix
index 1311ea1..6119cdf 100755
--- a/modules/base.nix
+++ b/modules/base.nix
@@ -7,6 +7,7 @@
 
 {
   imports = [
+    ./expose-vmvariant.nix
     ../packages/vim.nix
     ./users/Rory.nix
     ./extra-substituters.nix
diff --git a/modules/expose-vmvariant.nix b/modules/expose-vmvariant.nix
new file mode 100755
index 0000000..ab1bad0
--- /dev/null
+++ b/modules/expose-vmvariant.nix
@@ -0,0 +1,22 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}:
+
+{
+  options.virtualisation = {
+    isVmVariant = lib.mkOption {
+      default = false;
+      example = true;
+      description = "Whether this build is a VM build.";
+      type = lib.types.bool;
+    };
+  };
+  config = {
+    virtualisation.vmVariant = {
+      virtualisation.isVmVariant = true;
+    };
+  };
+}