`meson install -C build/` doesn't install gst-plugin-bad and some other subprojects

From master branch

$ meson --prefix /opt/dd-gstreamer/ --buildtype=debug build/
$ ninja -C build/
$ meson install -C build/

When I check /opt/dd-streamer/ I found only gstreamer-1.0, not plugins binaries.

But in gst-build/build/ exists all compiled libraries.

I tried to change feature value in meson_options.txt to enabled for bad option, but unsuccessfully, result is the same.