move vms to separate test config

test-vms/flake.nix

@@ -0,0 +1,29 @@
+{
+  description = "Flake to run services on a VM powered by incus";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-26.05";
+    postgresql-db.url = "path:../postgresql-db";
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      postgresql-db,
+    }@inputs:
+    {
+      nixosConfigurations = {
+        virtual-env = nixpkgs.lib.nixosSystem {
+          system = "x86_64-linux";
+          modules = [
+            ./virtual.nix
+            postgresql-db.nixosModules.postgresql-db
+
+            # declare the vm output
+            "${inputs.nixpkgs}/nixos/modules/virtualisation/incus-virtual-machine.nix"
+          ];
+        };
+      };
+    };
+}