libgstopencv.so is "normally" installed by gst-plugins-bad, but we want it to
be part of our gst-plugins-opencv package (installing it as part of gst-plugins-bad
would at least be confusing, and also not ideal given it'd have to depend on opencv,
even though we have gst-plugins-opencv).

bad currently doesn't have a way to allow disabling everything but the opencv
plugin bit, so that's what this patch does as a hack. It only keeps the bare
minimum to build the opencv helper (i.e. disable everything that gst-plugins-bad
does to not collide, but keep opencv).

TODO: replace this with something more maintainable, e.g. possible hacks
with submodules or creating a drop-in meson.build in the ebuild to just build
the plugin & helper libs.
--- a/ext/meson.build
+++ b/ext/meson.build
@@ -64,7 +64,6 @@ subdir('ttml')
 subdir('voaacenc')
 subdir('voamrwbenc')
 subdir('vulkan')
-subdir('wayland')
 subdir('webrtc')
 subdir('webrtcdsp')
 subdir('webp')
--- a/gst-libs/gst/meson.build
+++ b/gst-libs/gst/meson.build
@@ -1,24 +1 @@
-subdir('uridownloader')
-
-subdir('adaptivedemux')
-subdir('audio')
-subdir('basecamerabinsrc')
-subdir('codecparsers')
-subdir('codecs')
-subdir('d3d11')
-# cuda can depend on d3d11
-subdir('cuda')
-subdir('insertbin')
-subdir('interfaces')
-subdir('isoff')
-subdir('mpegts')
 subdir('opencv')
-subdir('play')
-subdir('player')
-subdir('sctp')
-subdir('transcoder')
-subdir('va')
-subdir('vulkan')
-subdir('wayland')
-subdir('webrtc')
-subdir('winrt')
--- a/meson.build
+++ b/meson.build
@@ -530,23 +530,10 @@ pkgconfig_variables = ['exec_prefix=${prefix}',
 
 pkgconfig_subdirs = ['gstreamer-1.0']
 
-pkgconfig.generate(
-  libraries : [gst_dep],
-  variables : pkgconfig_variables,
-  subdirs : pkgconfig_subdirs,
-  name : 'gstreamer-plugins-bad-1.0',
-  description : 'Streaming media framework, bad plugins libraries',
-)
-
 gpl_allowed = get_option('gpl').allowed()
 
 subdir('gst-libs')
-subdir('gst')
-subdir('sys')
 subdir('ext')
-subdir('tests')
-subdir('data')
-subdir('tools')
 
 if have_orcc
   update_orc_dist_files = find_program('scripts/update-orc-dist-files.py')
--- a/sys/meson.build
+++ b/sys/meson.build
@@ -18,7 +18,6 @@ subdir('msdk')
 subdir('nvcodec')
 subdir('opensles')
 subdir('qsv')
-subdir('shm')
 subdir('tinyalsa')
 subdir('uvch264')
 subdir('v4l2codecs')
diff --git a/ext/meson.build b/ext/meson.build
index ebf7e3b..4124917 100644
--- a/ext/meson.build
+++ b/ext/meson.build
@@ -64,8 +64,6 @@ subdir('ttml')
 subdir('voaacenc')
 subdir('voamrwbenc')
 subdir('vulkan')
-subdir('webrtc')
-subdir('webrtcdsp')
 subdir('webp')
 subdir('wildmidi')
 subdir('wpe')