Use “BuildRequires: appstream” only on Fedora

ibus-typing-booster.spec

@@ -1,6 +1,6 @@
 Name:       ibus-typing-booster
 Version:    2.10.4
-Release:    1%{?dist}
+Release:    2%{?dist}
 Summary:    A completion input method
 License:    GPLv3+, ASL 2.0
 URL:        https://mike-fabian.github.io/ibus-typing-booster/
@@ -43,7 +43,9 @@ BuildRequires:  m17n-lib
 BuildRequires:  m17n-db-extras
 BuildRequires:  python3-enchant
 BuildRequires:  python3-libvoikko
+%if 0%{?fedora}
 BuildRequires:  appstream
+%endif
 BuildRequires:  libappstream-glib
 BuildRequires:  desktop-file-utils
 BuildRequires:  python3-gobject
@@ -131,7 +133,9 @@ export PYTHON=%{__python3}
 
 %check
 export LC_ALL=C.UTF-8
+%if 0%{?fedora}
 appstreamcli validate --pedantic --no-net %{buildroot}/%{_datadir}/metainfo/*.appdata.xml
+%endif
 appstream-util validate-relax --nonet %{buildroot}/%{_datadir}/metainfo/*.appdata.xml
 desktop-file-validate \
     $RPM_BUILD_ROOT%{_datadir}/applications/ibus-setup-typing-booster.desktop
@@ -232,6 +236,9 @@ fi
 %{_datadir}/applications/emoji-picker.desktop
 
 %changelog
+* Wed Feb 17 2021 Mike FABIAN <mfabian@redhat.com> - 2.10.4-2
+- Use “BuildRequires:  appstream” only on Fedora
+
 * Tue Feb 02 2021 Mike FABIAN <mfabian@redhat.com> - 2.10.4-1
 - Update to 2.10.4
 - Use “from unittest import mock” instead of just “import mock”.