--- gnome-desktop-43.2/debian/patches/series	2023-02-16 01:15:51.000000000 +0900
+++ gnome-desktop-43.2/debian/patches/series	2023-03-05 20:26:49.000000000 +0900
@@ -1 +1,2 @@
 languages-Look-at-LOCPATH-before-compile-time-LIBLOCALEDI.patch
+use-mozc-for-Japanese.patch
diff -Nru gnome-desktop-43.2/debian/patches/use-mozc-for-Japanese.patch gnome-desktop-43.2/debian/patches/use-mozc-for-Japanese.patch
--- gnome-desktop-43.2/debian/patches/use-mozc-for-Japanese.patch	1970-01-01 09:00:00.000000000 +0900
+++ gnome-desktop-43.2/debian/patches/use-mozc-for-Japanese.patch	2023-03-05 20:27:12.000000000 +0900
@@ -0,0 +1,51 @@
+Description: Use mozc as the default input source for Japanese
+ Upstream prefers ibus-anthy for Japanese input, while Debian uses
+ ibus-mozc as the default.
+Author: YOSHINO Yoshihito <yy.y.ja.jp@gmail.com>
+Origin: vendor
+Forwarded: not-needed
+Last-Update: 2023-03-05
+
+Index: gnome-desktop-43.2/libgnome-desktop/default-input-sources.h
+===================================================================
+--- gnome-desktop-43.2.orig/libgnome-desktop/default-input-sources.h
++++ gnome-desktop-43.2/libgnome-desktop/default-input-sources.h
+@@ -36,7 +36,11 @@ static DefaultInputSource default_input_
+   { "hi_IN",    "ibus",         "m17n:hi:inscript" },
+   { "id_ID",    "xkb",          "us" },
+   { "it_IT",    "xkb",          "it" },
++#ifdef USE_MOZC_JP
++  { "ja_JP",    "ibus",         "mozc-jp" },
++#else
+   { "ja_JP",    "ibus",         "anthy" },
++#endif
+   { "kn_IN",    "ibus",         "m17n:kn:kgp" },
+   { "ko_KR",    "ibus",         "hangul" },
+   { "mai_IN",   "ibus",         "m17n:mai:inscript" },
+Index: gnome-desktop-43.2/meson_options.txt
+===================================================================
+--- gnome-desktop-43.2.orig/meson_options.txt
++++ gnome-desktop-43.2/meson_options.txt
+@@ -34,3 +34,7 @@ option('build_gtk4',
+ option('legacy_library',
+   type: 'boolean', value: true, description: 'Build the legacy libgnome-desktop-3.0'
+ )
++
++option('use_mozc_jp',
++  type: 'boolean', value: false, description: 'Use mozc-jp'
++)
+Index: gnome-desktop-43.2/libgnome-desktop/meson.build
+===================================================================
+--- gnome-desktop-43.2.orig/libgnome-desktop/meson.build
++++ gnome-desktop-43.2/libgnome-desktop/meson.build
+@@ -9,6 +9,10 @@ libargs = [
+   '-DXKB_BASE="@0@"'.format(xkb_base)
+ ]
+ 
++if get_option('use_mozc_jp')
++  add_project_arguments('-DUSE_MOZC_JP', language: 'c')
++endif
++
+ conf = configuration_data()
+ 
+ conf.set_quoted('GETTEXT_PACKAGE', '@0@-3.0'.format(meson.project_name()))
diff -Nru gnome-desktop-43.2/debian/rules gnome-desktop-43.2/debian/rules
--- gnome-desktop-43.2/debian/rules	2023-02-16 01:15:51.000000000 +0900
+++ gnome-desktop-43.2/debian/rules	2023-03-05 20:27:12.000000000 +0900
@@ -11,6 +11,12 @@
 export GD_SOVERSION = $(shell echo $(GD_LIBNAME) | rev | cut -f1 -d- | rev)
 export GD_API_VERSION = $(shell echo $(GD_LIBNAME) | rev | cut -f2 -d- | rev)
 
+ifneq (,$(filter $(DEB_BUILD_ARCH),i386 amd64 armel armhf arm64 riscv64))
+USE_MOZC_JP := -Duse_mozc_jp=true
+else
+USE_MOZC_JP := -Duse_mozc_jp=false
+endif
+
 %:
 	dh $@
 
@@ -18,7 +24,8 @@
 	dh_auto_configure -- \
 		-Dgtk_doc=true \
 		-Dinstalled_tests=true \
-		-Ddesktop_docs=true
+		-Ddesktop_docs=true \
+		$(USE_MOZC_JP)
 
 override_dh_auto_test:
 	debian/tests/run-with-locales \