dbus-x11 is not required in Fedora 30

- Add Conflicts for Fedora 28

ibus.spec

@@ -31,7 +31,7 @@
 
 Name:           ibus
 Version:        1.5.19
-Release:        5%{?dist}
+Release:        6%{?dist}
 Summary:        Intelligent Input Bus for Linux OS
 License:        LGPLv2+
 Group:          System Environment/Libraries
@@ -87,7 +87,6 @@ Requires:       %{name}-gtk3%{?_isa}   = %{version}-%{release}
 Requires:       %{name}-setup          = %{version}-%{release}
 
 Requires:       iso-codes
-Requires:       dbus-x11
 Requires:       dconf
 # rpmlint asks to delete librsvg2
 #Requires:       librsvg2
@@ -99,6 +98,10 @@ Requires:       python3-gobject
 Requires:       xorg-x11-xinit
 # for setxkbmap
 Requires:       xorg-x11-xkb-utils
+%if (0%{?fedora} > 29 || 0%{?rhel} > 8)
+%else
+Requires:       dbus-x11
+%endif
 
 Requires:               desktop-file-utils
 Requires(post):         desktop-file-utils
@@ -124,6 +127,10 @@ Requires:       dbus >= 1.2.4
 Requires:       glib2 >= %{glib_ver}
 # Owner of %%{_libdir}/girepository-1.0
 Requires:       gobject-introspection
+%if (0%{?fedora} > 28 || 0%{?rhel} > 7)
+%else
+Conflicts:      %{name}%{?_isa} < %{version}
+%endif
 
 %description libs
 This package contains the libraries for IBus
@@ -417,6 +424,10 @@ dconf update || :
 %{_datadir}/gtk-doc/html/*
 
 %changelog
+* Fri Oct 26 2018 Takao Fujiwara <tfujiwar@redhat.com> - 1.5.19-6
+- dbus-x11 is not required in Fedora 30
+- Add Conflicts for Fedora 28
+
 * Tue Oct 23 2018 Takao Fujiwara <tfujiwar@redhat.com> - 1.5.19-5
 - Use __python3 instead of python3
 - Delete Requires ibus in ibus-gtk* for Flatpak