tlp: add tlp-pd to passthru.tests to catch breakage

pkgs/tools/misc/tlp/default.nix

@@ -24,6 +24,7 @@
   # RDW only works with NetworkManager, and thus is optional with default off
   enableRDW ? false,
   networkmanager,
+  tlp-pd,
 }:
 stdenv.mkDerivation rec {
   pname = "tlp";
@@ -136,6 +137,10 @@ stdenv.mkDerivation rec {
       rm -rf $out/share/metainfo
     '';
 
+  passthru.tests = {
+    inherit tlp-pd;
+  };
+
   meta = {
     description = "Advanced Power Management for Linux";
     homepage = "https://linrunner.de/en/tlp/docs/tlp-linux-advanced-power-management.html";