https://bugs.gentoo.org/951611
https://bugs.gentoo.org/951609
https://github.com/flatpak/xdg-desktop-portal/issues/1650
https://github.com/flint2/gentoo/blob/7c8a4b4deb84826f20a7c8af1a0f125cd4942b4a/sys-apps/xdg-desktop-portal/files/xdg-desktop-portal-1.20.0-disable-gstreamer.patch

gstreamer is searched for unconditionally, but we don't have gstreamer-pbutils
packaged yet, so that's a problem. Make it conditional for now (as it ought
to be upstream either way if they're going to have an option for it).
--- a/meson.build
+++ b/meson.build
@@ -112,7 +112,7 @@ gio_unix_dep = dependency('gio-unix-2.0')
 json_glib_dep = dependency('json-glib-1.0')
 fuse3_dep = dependency('fuse3', version: '>= 3.10.0')
 gdk_pixbuf_dep = dependency('gdk-pixbuf-2.0')
-gst_pbutils_dep = dependency('gstreamer-pbutils-1.0')
+gst_pbutils_dep = dependency('gstreamer-pbutils-1.0', required: get_option('sandboxed-sound-validation'))
 geoclue_dep = dependency(
   'libgeoclue-2.0',
   version: '>= 2.5.2',
@@ -122,8 +122,8 @@ pipewire_dep = dependency('libpipewire-0.3', version: '>= 0.2.90')
 libsystemd_dep = dependency('libsystemd', required: get_option('systemd'))
 gudev_dep = dependency('gudev-1.0', required: get_option('gudev'))
 umockdev_dep = dependency('umockdev-1.0', required: get_option('tests'))
-
-gst_inspect = find_program('gst-inspect-1.0', required: false)
+gst_inspect = find_program('gst-inspect-1.0', required: get_option('sandboxed-sound-validation'))
+have_gst_inspect = gst_inspect.found()
 if gst_inspect.found()
   have_wav_parse = run_command(
     gst_inspect, 'wavparse', '--exists',
@@ -132,6 +132,7 @@ if gst_inspect.found()
 else
   have_wav_parse = false
 endif
+
 if have_wav_parse
   config_h.set('HAVE_WAV_PARSE', 1)
 endif
@@ -224,7 +225,7 @@ enable_tests = get_option('tests') \
   .require(python.found() and python.language_version().version_compare('>=3.9'),
            error_message: 'Python version >=3.9 is required') \
   .require(umockdev_dep.found()) \
-  .require(have_wav_parse,
+  .require(not have_wav_parse and not get_option('sandboxed-sound-validation').allowed(),
            error_message: 'gst-inspect and the wavparse plugins are required') \
   .allowed()
 
--- a/src/meson.build
+++ b/src/meson.build
@@ -206,14 +206,16 @@ if bwrap.found()
   validate_sound_c_args += '-DHELPER="@0@"'.format(bwrap.full_path())
 endif
 
-xdp_validate_sound = executable(
-  'xdg-desktop-portal-validate-sound',
-  'validate-sound.c',
-  dependencies: [gst_pbutils_dep],
-  c_args: validate_sound_c_args,
-  install: true,
-  install_dir: libexecdir,
-)
+if gst_inspect.found()
+  xdp_validate_sound = executable(
+    'xdg-desktop-portal-validate-sound',
+    'validate-sound.c',
+    dependencies: [gst_pbutils_dep],
+    c_args: validate_sound_c_args,
+    install: true,
+    install_dir: libexecdir,
+  )
+endif
 
 configure_file(
   input: 'xdg-desktop-portal-rewrite-launchers.service.in',
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -94,7 +94,6 @@ pytest_files = [
   'test_inhibit.py',
   'test_inputcapture.py',
   'test_location.py',
-  'test_notification.py',
   'test_openuri.py',
   'test_permission_store.py',
   'test_print.py',
@@ -122,7 +121,6 @@ template_files = [
   'templates/__init__.py',
   'templates/inputcapture.py',
   'templates/lockdown.py',
-  'templates/notification.py',
   'templates/print.py',
   'templates/remotedesktop.py',
   'templates/screenshot.py',
@@ -131,6 +129,11 @@ template_files = [
   'templates/wallpaper.py',
 ]
 
+if have_gst_inspect
+  template_files += ['templates/notification.py']
+  pytest_files += ['test_notification.py']
+endif
+
 foreach pytest_file : pytest_files
   testname = pytest_file.replace('.py', '').replace('test_', '')
   test(