diff --git a/hosts/common/programs/gst-device-monitor.nix b/hosts/common/programs/gst-device-monitor.nix
index e4166b29..72f24e8e 100644
--- a/hosts/common/programs/gst-device-monitor.nix
+++ b/hosts/common/programs/gst-device-monitor.nix
@@ -1,9 +1,22 @@
+# gst-device-monitor: gstreamer debugging tool.
+# - `gst-device-monitor-1.0 Audio/Sink`  #< show all audio sinks
+# - `gst-device-monitor-1.0 Audio/Source`  #< show all audio sources (microphones)
+# - `gst-device-monitor-1.0 Video/Source`  #< show all video sources (cameras)
 { pkgs, ... }:
 {
   sane.programs.gst-device-monitor = {
-    packageUnwrapped = pkgs.linkIntoOwnPackage pkgs.gst_all_1.gst-plugins-base [
+    packageUnwrapped = (pkgs.linkIntoOwnPackage pkgs.gst_all_1.gst-plugins-base [
       "bin/gst-device-monitor-1.0"
       "share/man/man1/gst-device-monitor-1.0.1.gz"
-    ];
+    ]).overrideAttrs (base: {
+      # XXX the binaries need `GST_PLUGIN_SYSTEM_PATH_1_0` set to function,
+      # but nixpkgs doesn't set those (TODO: upstream this!)
+      nativeBuildInputs = (base.nativeBuildInputs or []) ++ [
+        pkgs.wrapGAppsNoGuiHook
+      ];
+      buildInputs = (base.buildInputs or []) ++ [
+        pkgs.gst_all_1.gst-plugins-base
+      ];
+    });
   };
 }