nixos/test/installer: make sure we can build the nixos udev rules

Author: r-vdp

nixos/modules/services/hardware/udev.nix

@@ -57,7 +57,10 @@ let
         packages = lib.unique (map toString udevPackages);
 
         nativeBuildInputs = [
-          pkgs.systemdMinimal
+          # We only include the out output here to avoid needing to include all
+          # other outputs in the installer tests as well
+          # We only need the udevadm command anyway
+          pkgs.systemdMinimal.out
         ];
       }
       ''

nixos/tests/installer.nix

@@ -681,7 +681,7 @@ let
         {
           # The configuration of the system used to run "nixos-install".
           installer =
-            { config, ... }:
+            { config, pkgs, ... }:
             {
               imports = [
                 commonConfig
@@ -740,6 +740,11 @@ let
                   xorg.lndir
                   shellcheck-minimal
 
+                  # Only the out output is included here, which is what is
+                  # required to build the NixOS udev rules
+                  # See the comment in services/hardware/udev.nix
+                  systemdMinimal.out
+
                   # add curl so that rather than seeing the test attempt to download
                   # curl's tarball, we see what it's trying to download
                   curl