meson configure fails if json-glib is missing

Trying to build it in jhbuild. I assume it should disable the plugin instead?

Run-time dependency libqrencode found: NO (tried pkgconfig and cmake)
Using 'CMAKE_PREFIX_PATH' from environment with value: '/home/lazka/jhbuild/install'
Run-time dependency json-glib-1.0 found: NO (tried pkgconfig and cmake)
Looking for a fallback subproject for the dependency json-glib-1.0

../../../../jhbuild/checkout/gst-plugins-bad/ext/qroverlay/meson.build:2:0: ERROR: Neither a subproject directory nor a json-glib.wrap file was found