diff --git a/.gitignore b/.gitignore
index e69de29..1ec6eda 100644
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1 @@
+/gtk+-3.91.2.tar.xz
diff --git a/gtk4.spec b/gtk4.spec
new file mode 100644
index 0000000..a961a48
--- /dev/null
+++ b/gtk4.spec
@@ -0,0 +1,332 @@
+%if 0%{?fedora}
+%global with_wayland 1
+%global with_broadway 1
+%endif
+
+# File conflicts between gtk3-tests and gtk4-tests
+%global build_installed_tests 0
+
+%global glib2_version 2.53.0
+%global pango_version 1.37.3
+%global atk_version 2.15.1
+%global cairo_version 1.14.0
+%global gdk_pixbuf_version 2.30.0
+%global wayland_version 1.9.91
+%global wayland_protocols_version 1.9
+%global epoxy_version 1.0
+
+%global bin_version 4.0.0
+
+# Filter provides for private modules
+%global __provides_exclude_from ^%{_libdir}/gtk-4.0
+
+Name:           gtk4
+Version:        3.91.2
+Release:        1%{?dist}
+Summary:        GTK+ graphical user interface library
+
+License:        LGPLv2+
+URL:            http://www.gtk.org
+Source0:        http://download.gnome.org/sources/gtk+/3.91/gtk+-%{version}.tar.xz
+
+BuildRequires:  cups-devel
+BuildRequires:  desktop-file-utils
+BuildRequires:  gettext
+BuildRequires:  gtk-doc
+BuildRequires:  pkgconfig(atk) >= %{atk_version}
+BuildRequires:  pkgconfig(atk-bridge-2.0)
+BuildRequires:  pkgconfig(avahi-gobject)
+BuildRequires:  pkgconfig(cairo) >= %{cairo_version}
+BuildRequires:  pkgconfig(cairo-gobject) >= %{cairo_version}
+BuildRequires:  pkgconfig(colord)
+BuildRequires:  pkgconfig(epoxy)
+BuildRequires:  pkgconfig(gdk-pixbuf-2.0) >= %{gdk_pixbuf_version}
+BuildRequires:  pkgconfig(glib-2.0) >= %{glib2_version}
+BuildRequires:  pkgconfig(gobject-introspection-1.0)
+BuildRequires:  pkgconfig(graphene-gobject-1.0)
+BuildRequires:  pkgconfig(json-glib-1.0)
+BuildRequires:  pkgconfig(pango) >= %{pango_version}
+BuildRequires:  pkgconfig(rest-0.7)
+BuildRequires:  pkgconfig(xcomposite)
+BuildRequires:  pkgconfig(xcursor)
+BuildRequires:  pkgconfig(xdamage)
+BuildRequires:  pkgconfig(xfixes)
+BuildRequires:  pkgconfig(xi)
+BuildRequires:  pkgconfig(xinerama)
+BuildRequires:  pkgconfig(xrandr)
+BuildRequires:  pkgconfig(xrender)
+BuildRequires:  pkgconfig(xrender)
+%if 0%{?with_wayland}
+BuildRequires:  pkgconfig(egl)
+BuildRequires:  pkgconfig(wayland-client) >= %{wayland_version}
+BuildRequires:  pkgconfig(wayland-cursor) >= %{wayland_version}
+BuildRequires:  pkgconfig(wayland-egl) >= %{wayland_version}
+BuildRequires:  pkgconfig(wayland-protocols) >= %{wayland_protocols_version}
+BuildRequires:  pkgconfig(xkbcommon)
+%endif
+
+# standard icons
+Requires: adwaita-icon-theme
+# required for icon theme apis to work
+Requires: hicolor-icon-theme
+# split out in a subpackage
+Requires: gtk-update-icon-cache
+
+Requires: atk%{?_isa} >= %{atk_version}
+Requires: cairo%{?_isa} >= %{cairo_version}
+Requires: cairo-gobject%{?_isa} >= %{cairo_version}
+Requires: glib2%{?_isa} >= %{glib2_version}
+Requires: libepoxy%{?_isa} >= %{epoxy_version}
+Requires: pango%{?_isa} >= %{pango_version}
+%if 0%{?with_wayland}
+Requires: libwayland-client%{?_isa} >= %{wayland_version}
+Requires: libwayland-cursor%{?_isa} >= %{wayland_version}
+%endif
+
+# required to support all the different image formats
+Requires: gdk-pixbuf2-modules%{?_isa}
+
+# make sure we have a reasonable gsettings backend
+%if 0%{?fedora}
+Recommends: dconf%{?_isa}
+%else
+Requires: dconf%{?_isa}
+%endif
+
+%description
+GTK+ is a multi-platform toolkit for creating graphical user
+interfaces. Offering a complete set of widgets, GTK+ is suitable for
+projects ranging from small one-off tools to complete application
+suites.
+
+This package contains version 4 of GTK+.
+
+%package immodules
+Summary: Input methods for GTK+
+Requires: gtk4%{?_isa} = %{version}-%{release}
+# for im-cedilla.conf
+Requires: gtk2-immodules%{?_isa}
+
+%description immodules
+The gtk4-immodules package contains standalone input methods that
+are shipped as part of GTK+ 4.
+
+%package immodule-xim
+Summary: XIM support for GTK+
+Requires: gtk4%{?_isa} = %{version}-%{release}
+
+%description immodule-xim
+The gtk4-immodule-xim package contains XIM support for GTK+ 4.
+
+%package devel
+Summary: Development files for GTK+
+Requires: gtk4%{?_isa} = %{version}-%{release}
+
+%description devel
+This package contains the libraries and header files that are needed
+for writing applications with version 4 of the GTK+ widget toolkit. If
+you plan to develop applications with GTK+, consider installing the
+gtk4-devel-docs package.
+
+%package devel-docs
+Summary: Developer documentation for GTK+
+Requires: gtk4 = %{version}-%{release}
+
+%description devel-docs
+This package contains developer documentation for version 4 of the GTK+
+widget toolkit.
+
+%if 0%{?build_installed_tests}
+%package tests
+Summary: Tests for the %{name} package
+Requires: %{name}%{?_isa} = %{version}-%{release}
+
+%description tests
+The %{name}-tests package contains tests that can be used to verify
+the functionality of the installed %{name} package.
+%endif
+
+%prep
+%setup -q -n gtk+-%{version}
+
+%build
+export CFLAGS='-fno-strict-aliasing %optflags'
+%configure \
+        --enable-xkb \
+        --enable-xinerama \
+        --enable-xrandr \
+        --enable-xfixes \
+        --enable-xcomposite \
+        --enable-xdamage \
+        --enable-x11-backend \
+%if 0%{?with_wayland}
+        --enable-wayland-backend \
+%endif
+%if 0%{?with_broadway}
+        --enable-broadway-backend \
+%endif
+        --enable-colord \
+%if 0%{?build_installed_tests}
+        --enable-installed-tests
+%else
+        --disable-installed-tests
+%endif
+
+# fight unused direct deps
+sed -i -e 's/ -shared / -Wl,-O1,--as-needed\0/g' libtool
+
+make %{?_smp_mflags}
+
+%install
+%make_install RUN_QUERY_IMMODULES_TEST=false
+
+%find_lang gtk40
+%find_lang gtk40-properties
+
+(cd $RPM_BUILD_ROOT%{_bindir}
+ mv gtk4-query-immodules gtk4-query-immodules-%{__isa_bits}
+)
+
+echo ".so man1/gtk4-query-immodules.1" > $RPM_BUILD_ROOT%{_mandir}/man1/gtk4-query-immodules-%{__isa_bits}.1
+
+# Remove unpackaged files
+find $RPM_BUILD_ROOT -name '*.la' -delete
+
+%if !0%{?with_broadway}
+rm $RPM_BUILD_ROOT%{_mandir}/man1/gtk4-broadwayd.1*
+%endif
+
+touch $RPM_BUILD_ROOT%{_libdir}/gtk-4.0/%{bin_version}/immodules.cache
+
+mkdir -p $RPM_BUILD_ROOT%{_sysconfdir}/gtk-4.0
+mkdir -p $RPM_BUILD_ROOT%{_libdir}/gtk-4.0/modules
+mkdir -p $RPM_BUILD_ROOT%{_libdir}/gtk-4.0/immodules
+mkdir -p $RPM_BUILD_ROOT%{_libdir}/gtk-4.0/%{bin_version}/theming-engines
+
+%check
+desktop-file-validate %{buildroot}%{_datadir}/applications/*.desktop
+
+%post -p /sbin/ldconfig
+
+%postun -p /sbin/ldconfig
+
+%post devel
+touch --no-create %{_datadir}/icons/hicolor &>/dev/null || :
+
+%postun devel
+if [ $1 -eq 0 ] ; then
+    touch --no-create %{_datadir}/icons/hicolor &>/dev/null
+    gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
+fi
+
+%posttrans devel
+gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
+
+%transfiletriggerin -- %{_libdir}/gtk-4.0/%{bin_version}/immodules
+gtk4-query-immodules-%{__isa_bits} --update-cache &>/dev/null || :
+
+%transfiletriggerpostun -- %{_libdir}/gtk-4.0/%{bin_version}/immodules
+gtk-query-immodules-4.0-%{__isa_bits} --update-cache &>/dev/null || :
+
+%files -f gtk40.lang
+%license COPYING
+%doc AUTHORS NEWS README
+%{_bindir}/gtk4-query-immodules*
+%{_bindir}/gtk4-launch
+%{_bindir}/gtk4-update-icon-cache
+%{_libdir}/libgtk-4.so.*
+%dir %{_libdir}/gtk-4.0
+%dir %{_libdir}/gtk-4.0/%{bin_version}
+%dir %{_datadir}/gtk-4.0
+%{_libdir}/gtk-4.0/%{bin_version}/theming-engines
+%dir %{_libdir}/gtk-4.0/%{bin_version}/immodules
+%{_libdir}/gtk-4.0/%{bin_version}/printbackends
+%{_libdir}/gtk-4.0/modules
+%{_libdir}/gtk-4.0/immodules
+%{_datadir}/themes/Default
+%{_datadir}/themes/Emacs
+%{_libdir}/girepository-1.0
+%ghost %{_libdir}/gtk-4.0/%{bin_version}/immodules.cache
+%{_mandir}/man1/gtk4-query-immodules*
+%{_mandir}/man1/gtk4-launch.1*
+%{_mandir}/man1/gtk4-update-icon-cache.1*
+%{_datadir}/glib-2.0/schemas/org.gtk.Settings.FileChooser.gschema.xml
+%{_datadir}/glib-2.0/schemas/org.gtk.Settings.ColorChooser.gschema.xml
+%{_datadir}/glib-2.0/schemas/org.gtk.Settings.Debug.gschema.xml
+%{_datadir}/glib-2.0/schemas/org.gtk.exampleapp.gschema.xml
+%if 0%{?with_broadway}
+%{_bindir}/gtk4-broadwayd
+%{_mandir}/man1/gtk4-broadwayd.1*
+%endif
+
+%files immodules
+%{_libdir}/gtk-4.0/%{bin_version}/immodules/im-cedilla.so
+%{_libdir}/gtk-4.0/%{bin_version}/immodules/im-am-et.so
+%{_libdir}/gtk-4.0/%{bin_version}/immodules/im-cyrillic-translit.so
+%{_libdir}/gtk-4.0/%{bin_version}/immodules/im-inuktitut.so
+%{_libdir}/gtk-4.0/%{bin_version}/immodules/im-ipa.so
+%{_libdir}/gtk-4.0/%{bin_version}/immodules/im-multipress.so
+%{_libdir}/gtk-4.0/%{bin_version}/immodules/im-thai.so
+%{_libdir}/gtk-4.0/%{bin_version}/immodules/im-ti-er.so
+%{_libdir}/gtk-4.0/%{bin_version}/immodules/im-ti-et.so
+%{_libdir}/gtk-4.0/%{bin_version}/immodules/im-viqr.so
+%if 0%{?with_broadway}
+%{_libdir}/gtk-4.0/%{bin_version}/immodules/im-broadway.so
+%endif
+%config(noreplace) %{_sysconfdir}/gtk-4.0/im-multipress.conf
+
+%files immodule-xim
+%{_libdir}/gtk-4.0/%{bin_version}/immodules/im-xim.so
+
+%files devel -f gtk40-properties.lang
+%{_libdir}/lib*.so
+%{_includedir}/*
+%{_libdir}/pkgconfig/*
+%{_bindir}/gtk4-builder-tool
+%{_bindir}/gtk4-demo
+%{_bindir}/gtk4-encode-symbolic-svg
+%{_bindir}/gtk4-icon-browser
+%{_bindir}/gtk4-query-settings
+%{_datadir}/applications/gtk4-demo.desktop
+%{_datadir}/applications/gtk4-icon-browser.desktop
+%{_datadir}/applications/gtk4-widget-factory.desktop
+%{_datadir}/icons/hicolor/*/apps/gtk4-demo.png
+%{_datadir}/icons/hicolor/*/apps/gtk4-demo-symbolic.symbolic.png
+%{_datadir}/icons/hicolor/*/apps/gtk4-widget-factory.png
+%{_datadir}/icons/hicolor/*/apps/gtk4-widget-factory-symbolic.symbolic.png
+%{_bindir}/gtk4-demo-application
+%{_bindir}/gtk4-widget-factory
+%{_datadir}/gettext/
+%{_datadir}/gtk-4.0/gtkbuilder.rng
+%{_datadir}/gir-1.0
+%{_datadir}/glib-2.0/schemas/org.gtk.Demo.gschema.xml
+%{_mandir}/man1/gtk4-builder-tool.1*
+%{_mandir}/man1/gtk4-demo.1*
+%{_mandir}/man1/gtk4-demo-application.1*
+%{_mandir}/man1/gtk4-encode-symbolic-svg.1*
+%{_mandir}/man1/gtk4-icon-browser.1*
+%{_mandir}/man1/gtk4-query-settings.1*
+%{_mandir}/man1/gtk4-widget-factory.1*
+
+%files devel-docs
+%{_datadir}/gtk-doc
+
+%if 0%{?build_installed_tests}
+%files tests
+%{_libexecdir}/installed-tests/gtk+
+%{_datadir}/installed-tests
+%endif
+
+%changelog
+* Tue Aug 08 2017 Kalev Lember <klember@redhat.com> - 3.91.2-1
+- Update to 3.91.2
+
+* Thu Jul 20 2017 Kalev Lember <klember@redhat.com> - 3.91.1-1
+- Update to 3.91.1
+
+* Wed Jun 14 2017 Kalev Lember <klember@redhat.com> - 3.91.0-2
+- Disable installed tests due to file conflicts between gtk3-tests and
+  gtk4-tests
+
+* Wed Jun 14 2017 Kalev Lember <klember@redhat.com> - 3.91.0-1
+- Initial Fedora packaging
diff --git a/sources b/sources
index e69de29..4d6d310 100644
--- a/sources
+++ b/sources
@@ -0,0 +1 @@
+SHA512 (gtk+-3.91.2.tar.xz) = e89bedd1c6652af7756a398582a94abc6640504b0d97a5084841d582a05ae4ec7c2b2f0121f109d7a72e270d4786de080c3d36d5086e51d0e359858ae8a74a4f