Use D-Bus remote on Wayland (rhbz#1817330)

thunderbird-dbus-remote.patch

@@ -0,0 +1,43 @@
+diff --git a/toolkit/components/remote/nsRemoteService.cpp b/toolkit/components/remote/nsRemoteService.cpp
+--- a/toolkit/components/remote/nsRemoteService.cpp
++++ b/toolkit/components/remote/nsRemoteService.cpp
+@@ -38,6 +38,10 @@
+ #define START_TIMEOUT_SEC 5
+ #define START_SLEEP_MSEC 100
+ 
++// When MOZ_DBUS_REMOTE is set both X11 and Wayland backends
++// use only DBus remote.
++#define DBUS_REMOTE_ENV "MOZ_DBUS_REMOTE"
++
+ using namespace mozilla;
+ 
+ extern int gArgc;
+@@ -101,11 +105,11 @@
+   bool useX11Remote = GDK_IS_X11_DISPLAY(gdk_display_get_default());
+ 
+ #  if defined(MOZ_ENABLE_DBUS)
+-  if (!useX11Remote) {
++  if (!useX11Remote || getenv(DBUS_REMOTE_ENV)) {
+     client = new nsDBusRemoteClient();
+   }
+ #  endif
+-  if (useX11Remote) {
++  if (!client && useX11Remote) {
+     client = new nsXRemoteClient();
+   }
+ #elif defined(XP_WIN)
+@@ -150,11 +154,11 @@
+   bool useX11Remote = GDK_IS_X11_DISPLAY(gdk_display_get_default());
+ 
+ #  if defined(MOZ_ENABLE_DBUS)
+-  if (!useX11Remote) {
++  if (!useX11Remote || getenv(DBUS_REMOTE_ENV)) {
+     mRemoteServer = MakeUnique<nsDBusRemoteServer>();
+   }
+ #  endif
+-  if (useX11Remote) {
++  if (!mRemoteServer && useX11Remote) {
+     mRemoteServer = MakeUnique<nsGTKRemoteServer>();
+   }
+ #elif defined(XP_WIN)
+

thunderbird.sh.in

@@ -74,6 +74,13 @@ export MOZ_ALLOW_DOWNGRADE=1
 # export MOZ_DISABLE_LANGPACKS
 #
 
+##
+## Use D-Bus remote exclusively when there's Wayland display.
+##
+if [ "$WAYLAND_DISPLAY" ]; then
+  export MOZ_DBUS_REMOTE=1
+fi
+
 ##
 ## Automatically installed langpacks are tracked by .fedora-langpack-install
 ## config file.

thunderbird.spec

@@ -94,7 +94,7 @@ ExcludeArch: s390x
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
 Version:        68.8.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 URL:            http://www.mozilla.org/projects/thunderbird/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 Source0:        ftp://ftp.mozilla.org/pub/thunderbird/releases/%{version}%{?pre_version}/source/thunderbird-%{version}%{?pre_version}.source.tar.xz
@@ -139,6 +139,7 @@ Patch307:       build-disable-elfhack.patch
 # Upstream patches
 Patch402:       mozilla-526293.patch
 Patch403:       mozilla-1576268.patch
+Patch404:       thunderbird-dbus-remote.patch
 
 %if %{official_branding}
 # Required by Mozilla Corporation
@@ -285,6 +286,7 @@ debug %{name}, you want to install %{name}-debuginfo instead.
 
 %patch402 -p1 -b .526293
 %patch403 -p1 -b .1576268
+%patch404 -p1 -b .thunderbird-dbus-remote
 
 %if %{official_branding}
 # Required by Mozilla Corporation
@@ -759,6 +761,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Fri May 15 2020 Martin Stransky <stransky@redhat.com> - 68.8.0-2
+- Use D-Bus remote on Wayland (rhbz#1817330).
+
 * Thu May 14 2020 Jan Horak <jhorak@redhat.com> - 68.8.0-1
 - Update to 68.8.0 build2