programs: ship v4l-utils, for debugging the Pinephone camera pipeline

hosts/common/programs/assorted.nix

@@ -328,6 +328,7 @@ in
       # "tdesktop"  # broken on phosh
       # "tokodon"
       "tuba"  # mastodon/pleroma client (stores pw in keyring)
+      "v4l-utils"  # for `media-ctl`; to debug cameras: <https://wiki.postmarketos.org/wiki/PINE64_PinePhone_(pine64-pinephone)#Cameras>
       "vulkan-tools"  # vulkaninfo
       # "whalebird"  # pleroma client (Electron). input is broken on phosh.
       "xdg-terminal-exec"

hosts/common/programs/default.nix

@@ -178,6 +178,7 @@
     ./tor-browser.nix
     ./tuba.nix
     ./unl0kr
+    ./v4l-utils.nix
     ./via.nix
     ./visidata.nix
     ./vlc.nix

hosts/common/programs/v4l-utils.nix

@@ -0,0 +1,8 @@
+{ pkgs, ... }:
+{
+  sane.programs.v4l-utils = {
+    packageUnwrapped = pkgs.v4l-utils.override {
+      withGUI = false;  #< XXX(2024-09-09): gui does not cross compile due to qtbase / wrapQtAppsHook
+    };
+  };
+}