enable integration test on aarch64

Author: Mic92

nix/packages/nixos-facter/tests/default.nix

@@ -12,9 +12,7 @@ let
     eval-config = import "${inputs.nixpkgs}/nixos/lib/eval-config.nix";
   };
 in
-# for now we only run the tests in x86_64-linux since we don't have access to a bare-metal ARM box or a VM that supports nested
-# virtualisation which makes the test take forever and ultimately fail
-pkgs.lib.optionalAttrs pkgs.stdenv.isx86_64 {
+{
   golangci-lint = perSystem.self.nixos-facter.overrideAttrs (old: {
     nativeBuildInputs = old.nativeBuildInputs ++ [ pkgs.golangci-lint ];
     buildPhase = ''