diff --git a/dev-libs/glib/Manifest b/dev-libs/glib/Manifest
index aa0ad83..c9d7739 100644
--- a/dev-libs/glib/Manifest
+++ b/dev-libs/glib/Manifest
@@ -1,2 +1 @@
-DIST glib-2.58.3.tar.xz 4863648 BLAKE2B 4269bd6e80869f39d567917438f750561debb1b45d40ecea487d2e76e2468e07dc8d80a23678699f7b8f7778c2ed9d29e866ae5e33770f51ed00709dd5fe97eb SHA512 1e1cb5b607367dcbadb95563d463e81702cf396b28f1173f6d933707f4f3d5595a70225423e918807a05994a24f16fa3ac87d2ec67e4b670244ea99836634cce
-DIST pkg-config-0.28.tar.gz 1931203 BLAKE2B bafdd4e838623965c6bd454421ddd9051fc43fc29948e1615b49fef463c3c3a18807aabe6416f96cfdf58d6b1c9e114d77f97bd985facee7c14284a8a64a768b SHA512 6eafa5ca77c5d44cd15f48457a5e96fcea2555b66d8e35ada5ab59864a0aa03d441e15f54ab9c6343693867b3b490f392c75b7d9312f024c9b7ec6a0194d8320
+DIST glib-2.66.7.tar.xz 4844892 BLAKE2B 2d128e8c933a8c5bd27734e96e50244f27c29199823e2185e8cfa5b4bbc0ca23f761c9de275c9941672eb945e302178b3cb4b5bd577f375ad953a97dddc70e34 SHA512 f6e6cc0fe2ab4a31a623bf9a1e63f833783e044e7ed55b66a84fc0cbf1410eec233fe0e226abb20aac0e40167a9624bf5e65197f9eed879da1293af44408d530
diff --git a/dev-libs/glib/glib-2.58.3-r5.ebuild b/dev-libs/glib/glib-2.58.3-r5.ebuild
deleted file mode 100644
index 74ac291..0000000
--- a/dev-libs/glib/glib-2.58.3-r5.ebuild
+++ /dev/null
@@ -1,326 +0,0 @@
-# Copyright 1999-2019 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=5
-PYTHON_COMPAT=( python{2_7,3_5,3_6,3_7} )
-GNOME2_EAUTORECONF=yes
-
-inherit autotools bash-completion-r1 epunt-cxx flag-o-matic gnome2 libtool linux-info \
-	multilib multilib-minimal pax-utils python-any-r1 toolchain-funcs virtualx
-
-# Until bug #537330 glib is a reverse dependency of pkgconfig and, then
-# adding new dependencies end up making stage3 to grow. Every addition needs
-# then to be think very closely.
-
-DESCRIPTION="The GLib library of C routines"
-HOMEPAGE="https://www.gtk.org/"
-SRC_URI="${SRC_URI}
-	https://pkgconfig.freedesktop.org/releases/pkg-config-0.28.tar.gz" # pkg.m4 for eautoreconf
-
-LICENSE="LGPL-2.1+"
-SLOT="2"
-IUSE="dbus debug doc fam gtk-doc kernel_linux +mime selinux static-libs systemtap test utils xattr"
-
-KEYWORDS="*"
-
-# Added util-linux multilib dependency to have libmount support (which
-# is always turned on on linux systems, unless explicitly disabled, but
-# this ebuild does not do that anyway) (bug #599586)
-
-RDEPEND="
-	!<dev-util/gdbus-codegen-${PV}
-	>=dev-libs/libpcre-8.31:3[${MULTILIB_USEDEP},static-libs?]
-	>=virtual/libiconv-0-r1[${MULTILIB_USEDEP}]
-	>=virtual/libffi-3.0.13-r1:=[${MULTILIB_USEDEP}]
-	>=virtual/libintl-0-r2[${MULTILIB_USEDEP}]
-	>=sys-libs/zlib-1.2.8-r1[${MULTILIB_USEDEP}]
-	kernel_linux? ( >=sys-apps/util-linux-2.23[${MULTILIB_USEDEP}] )
-	selinux? ( >=sys-libs/libselinux-2.2.2-r5[${MULTILIB_USEDEP}] )
-	xattr? ( >=sys-apps/attr-2.4.47-r1[${MULTILIB_USEDEP}] )
-	fam? ( >=virtual/fam-0-r1[${MULTILIB_USEDEP}] )
-	utils? (
-		>=dev-util/gdbus-codegen-${PV}
-		virtual/libelf:0=
-	)
-"
-DEPEND="${RDEPEND}
-	app-text/docbook-xml-dtd:4.1.2
-	app-text/docbook-xsl-stylesheets
-	>=dev-libs/libxslt-1.0
-	>=sys-devel/gettext-0.11
-	gtk-doc? ( >=dev-util/gtk-doc-1.20 )
-	systemtap? ( >=dev-util/systemtap-1.3 )
-	${PYTHON_DEPS}
-	test? (
-		sys-devel/gdb
-		>=dev-util/gdbus-codegen-${PV}
-		>=sys-apps/dbus-1.2.14 )
-"
-# configure.ac has gtk-doc-am stuff behind m4_ifdef, so we don't need a gtk-doc-am build dep
-
-# Migration of glib-genmarshal, glib-mkenums and gtester-report to a separate
-# python depending package, which can be buildtime depended in packages that
-# need these tools, without pulling in python at runtime.
-DEPEND="${DEPEND}
-	>=dev-util/glib-utils-${PV}"
-PDEPEND="
-	dbus? ( gnome-base/dconf )
-	mime? ( x11-misc/shared-mime-info )
-"
-# shared-mime-info needed for gio/xdgmime, bug #409481
-# dconf is needed to be able to save settings, bug #498436
-
-MULTILIB_CHOST_TOOLS=(
-	/usr/bin/gio-querymodules$(get_exeext)
-)
-
-pkg_setup() {
-	if use kernel_linux ; then
-		CONFIG_CHECK="~INOTIFY_USER"
-		if use test ; then
-			CONFIG_CHECK="~IPV6"
-			WARNING_IPV6="Your kernel needs IPV6 support for running some tests, skipping them."
-		fi
-		linux-info_pkg_setup
-	fi
-	python-any-r1_pkg_setup
-}
-
-src_prepare() {
-	# Prevent build failure in stage3 where pkgconfig is not available, bug #481056
-	mv -f "${WORKDIR}"/pkg-config-*/pkg.m4 "${S}"/m4macros/ || die
-
-	if use test; then
-		# Disable tests requiring dev-util/desktop-file-utils when not installed, bug #286629, upstream bug #629163
-		if ! has_version dev-util/desktop-file-utils ; then
-			ewarn "Some tests will be skipped due dev-util/desktop-file-utils not being present on your system,"
-			ewarn "think on installing it to get these tests run."
-			sed -i -e "/appinfo\/associations/d" gio/tests/appinfo.c || die
-			sed -i -e "/g_test_add_func/d" gio/tests/desktop-app-info.c || die
-		fi
-
-		# gdesktopappinfo requires existing terminal (gnome-terminal or any
-		# other), falling back to xterm if one doesn't exist
-		#if ! has_version x11-terms/xterm && ! has_version x11-terms/gnome-terminal ; then
-		#	ewarn "Some tests will be skipped due to missing terminal program"
-		# These tests seem to sometimes fail even with a terminal; skip for now and reevulate with meson
-		# Also try https://gitlab.gnome.org/GNOME/glib/issues/1601 once ready for backport (or in a bump) and file new issue if still fails
-		sed -i -e "/appinfo\/launch/d" gio/tests/appinfo.c || die
-		# desktop-app-info/launch* might fail similarly
-		sed -i -e "/desktop-app-info\/launch-as-manager/d" gio/tests/desktop-app-info.c || die
-		#fi
-
-		# https://bugzilla.gnome.org/show_bug.cgi?id=722604
-		sed -i -e "/timer\/stop/d" glib/tests/timer.c || die
-		sed -i -e "/timer\/basic/d" glib/tests/timer.c || die
-
-		ewarn "Tests for search-utils have been skipped"
-		sed -i -e "/search-utils/d" glib/tests/Makefile.am || die
-	else
-		# Don't build tests, also prevents extra deps, bug #512022
-		sed -i -e 's/ tests//' {.,gio,glib}/Makefile.am || die
-	fi
-
-	# gdbus-codegen is a separate package
-	epatch "${FILESDIR}"/${PN}-2.58.2-external-gdbus-codegen.patch
-
-	# Fix for CVE-2019-12450, see also crbug.com/972030
-	epatch "${FILESDIR}"/${PN}-2.58.3-gfile-Limit-access-to-files-when-copying.patch
-	# Fix for CVE-2019-CVE-2019-13012, see also crbug.com/981618
-	epatch "${FILESDIR}"/${PN}-2.58.3-keyfile-settings-Use-tighter-permissions.patch
-
-	# Fix for https://gitlab.gnome.org/GNOME/glib/issues/1737, see also
-	# b/139313156
-	epatch "${FILESDIR}"/${PN}-2.58.3-gdbus-tool-Fix-units-for-gdbus-tool-wait-timeout.patch
-
-	# Tarball doesn't come with gtk-doc.make and we can't unconditionally depend on dev-util/gtk-doc due
-	# to circular deps during bootstramp. If actually not building gtk-doc, an almost empty file will do
-	# fine as well - this is also what upstream autogen.sh does if gtkdocize is not found. If gtk-doc is
-	# installed, eautoreconf will call gtkdocize, which overwrites the empty gtk-doc.make with a full copy.
-	cat > gtk-doc.make << EOF
-EXTRA_DIST =
-CLEANFILES =
-EOF
-
-	# Make sure we use /run directly instead of /var/run.  https://crbug.com/853158
-	sed -i \
-		-e '/unix:path=/s:/var/run:/run:' \
-		gio/gdbusaddress.c || die
-
-	gnome2_src_prepare
-	epunt_cxx
-}
-
-multilib_src_configure() {
-	# Avoid circular depend with dev-util/pkgconfig and
-	# native builds (cross-compiles won't need pkg-config
-	# in the target ROOT to work here)
-	if ! tc-is-cross-compiler && ! $(tc-getPKG_CONFIG) --version >& /dev/null; then
-		if has_version sys-apps/dbus; then
-			export DBUS1_CFLAGS="-I/usr/include/dbus-1.0 -I/usr/$(get_libdir)/dbus-1.0/include"
-			export DBUS1_LIBS="-ldbus-1"
-		fi
-		export LIBFFI_CFLAGS="-I$(echo /usr/$(get_libdir)/libffi-*/include)"
-		export LIBFFI_LIBS="-lffi"
-		export PCRE_CFLAGS=" " # test -n "$PCRE_CFLAGS" needs to pass
-		export PCRE_LIBS="-lpcre"
-	fi
-
-	# These configure tests don't work when cross-compiling.
-	if tc-is-cross-compiler ; then
-		# https://bugzilla.gnome.org/show_bug.cgi?id=756473
-		case ${CHOST} in
-		hppa*|metag*) export glib_cv_stack_grows=yes ;;
-		*)            export glib_cv_stack_grows=no ;;
-		esac
-		# https://bugzilla.gnome.org/show_bug.cgi?id=756474
-		export glib_cv_uscore=no
-		# https://bugzilla.gnome.org/show_bug.cgi?id=756475
-		export ac_cv_func_posix_get{pwuid,grgid}_r=yes
-	fi
-
-	local myconf
-
-	case "${CHOST}" in
-		*-mingw*) myconf="${myconf} --with-threads=win32" ;;
-		*)        myconf="${myconf} --with-threads=posix" ;;
-	esac
-
-	# libelf used only by the gresource bin
-	ECONF_SOURCE="${S}" gnome2_src_configure ${myconf} \
-		$(usex debug --enable-debug=yes ' ') \
-		$(use_enable xattr) \
-		$(use_enable fam) \
-		$(multilib_native_use_enable gtk-doc) \
-		$(use_enable kernel_linux libmount) \
-		$(use_enable selinux) \
-		$(use_enable static-libs static) \
-		$(use_enable systemtap dtrace) \
-		$(use_enable systemtap systemtap) \
-		$(multilib_native_use_enable utils libelf) \
-		--with-python=${EPYTHON} \
-		--disable-compile-warnings \
-		--enable-man \
-		--with-pcre=system \
-		--with-xml-catalog="${EPREFIX}/etc/xml/catalog"
-
-	if multilib_is_native_abi; then
-		local d
-		for d in glib gio gobject; do
-			ln -s "${S}"/docs/reference/${d}/html docs/reference/${d}/html || die
-		done
-	fi
-}
-
-multilib_src_test() {
-	export XDG_CONFIG_DIRS=/etc/xdg
-	export XDG_DATA_DIRS=/usr/local/share:/usr/share
-	export G_DBUS_COOKIE_SHA1_KEYRING_DIR="${T}/temp"
-	export LC_TIME=C # bug #411967
-	unset GSETTINGS_BACKEND # bug #596380
-	python_setup
-
-	# Related test is a bit nitpicking
-	mkdir "$G_DBUS_COOKIE_SHA1_KEYRING_DIR"
-	chmod 0700 "$G_DBUS_COOKIE_SHA1_KEYRING_DIR"
-
-	# Hardened: gdb needs this, bug #338891
-	if host-is-pax ; then
-		pax-mark -mr "${BUILD_DIR}"/tests/.libs/assert-msg-test \
-			|| die "Hardened adjustment failed"
-	fi
-
-	# Need X for dbus-launch session X11 initialization
-	virtx emake check
-}
-
-multilib_src_install() {
-	emake DESTDIR="${D}" completiondir="$(get_bashcompdir)" install
-	keepdir /usr/$(get_libdir)/gio/modules
-}
-
-multilib_src_install_all() {
-	if use doc ; then
-		einstalldocs
-	fi
-
-	# These are installed by dev-util/glib-utils
-	# TODO: With patching we might be able to get rid of the python-any deps and removals, and test depend on glib-utils instead; revisit with meson
-	rm "${ED}usr/bin/glib-genmarshal" || die
-	rm "${ED}usr/share/man/man1/glib-genmarshal.1" || die
-	rm "${ED}usr/bin/glib-mkenums" || die
-	rm "${ED}usr/share/man/man1/glib-mkenums.1" || die
-	rm "${ED}usr/bin/gtester-report" || die
-	rm "${ED}usr/share/man/man1/gtester-report.1" || die
-
-	# Do not install charset.alias even if generated, leave it to libiconv
-	rm -f "${ED}/usr/$(get_libdir)/charset.alias"
-
-	# Don't install gdb python macros, bug 291328
-	rm -rf "${ED}/usr/share/gdb/" "${ED}/usr/share/glib-2.0/gdb/"
-
-	# Completely useless with or without USE static-libs, people need to use pkg-config
-	find "${ED}" -name '*.la' -delete || die
-}
-
-pkg_preinst() {
-	gnome2_pkg_preinst
-
-	# Make gschemas.compiled belong to glib alone
-	local cache="usr/share/glib-2.0/schemas/gschemas.compiled"
-
-	if [[ -e ${EROOT}${cache} ]]; then
-		cp "${EROOT}"${cache} "${ED}"/${cache} || die
-	else
-		touch "${ED}"/${cache} || die
-	fi
-
-	multilib_pkg_preinst() {
-		# Make giomodule.cache belong to glib alone
-		local cache="usr/$(get_libdir)/gio/modules/giomodule.cache"
-
-		if [[ -e ${EROOT}${cache} ]]; then
-			cp "${EROOT}"${cache} "${ED}"/${cache} || die
-		else
-			touch "${ED}"/${cache} || die
-		fi
-	}
-
-	# Don't run the cache ownership when cross-compiling, as it would end up with an empty cache
-	# file due to inability to create it and GIO might not look at any of the modules there
-	if ! tc-is-cross-compiler ; then
-		multilib_foreach_abi multilib_pkg_preinst
-	fi
-}
-
-pkg_postinst() {
-	# force (re)generation of gschemas.compiled
-	GNOME2_ECLASS_GLIB_SCHEMAS="force"
-
-	gnome2_pkg_postinst
-
-#	multilib_pkg_postinst() {
-#		gnome2_giomodule_cache_update \
-#			|| die "Update GIO modules cache failed (for ${ABI})"
-#	}
-	if ! tc-is-cross-compiler ; then
-		multilib_foreach_abi multilib_pkg_postinst
-	else
-		ewarn "Updating of GIO modules cache skipped due to cross-compilation."
-		ewarn "You might want to run gio-querymodules manually on the target for"
-		ewarn "your final image for performance reasons and re-run it when packages"
-		ewarn "installing GIO modules get upgraded or added to the image."
-	fi
-}
-
-pkg_postrm() {
-	gnome2_pkg_postrm
-
-	if [[ -z ${REPLACED_BY_VERSION} ]]; then
-		multilib_pkg_postrm() {
-			rm -f "${EROOT}"usr/$(get_libdir)/gio/modules/giomodule.cache
-		}
-		multilib_foreach_abi multilib_pkg_postrm
-		rm -f "${EROOT}"usr/share/glib-2.0/schemas/gschemas.compiled
-	fi
-}
diff --git a/dev-libs/glib/glib-2.66.7-r1.ebuild b/dev-libs/glib/glib-2.66.7-r1.ebuild
new file mode 100644
index 0000000..6b15b01
--- /dev/null
+++ b/dev-libs/glib/glib-2.66.7-r1.ebuild
@@ -0,0 +1,284 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+PYTHON_COMPAT=( python3_{6,7,8} )
+
+inherit flag-o-matic gnome.org gnome2-utils linux-info meson multilib multilib-minimal python-any-r1 toolchain-funcs xdg
+
+DESCRIPTION="The GLib library of C routines"
+HOMEPAGE="https://www.gtk.org/"
+
+LICENSE="LGPL-2.1+"
+SLOT="2"
+IUSE="cros_host dbus debug doc elibc_glibc fam gtk-doc kernel_linux +mime selinux static-libs sysprof systemtap test utils xattr"
+RESTRICT="!test? ( test )"
+
+KEYWORDS="*"
+
+# * libelf isn't strictly necessary, but makes gresource tool more useful, and
+# the check is automagic in gio/meson.build. gresource is not a multilib tool
+# right now, thus it doesn't matter if non-native ABI libelf exists or not
+# (non-native binary is overwritten, it doesn't matter if libelf was linked to).
+# * elfutils (via libelf) does not build on Windows. gresources are not embedded
+# within ELF binaries on that platform anyway and inspecting ELF binaries from
+# other platforms is not that useful so exclude the dependency in this case.
+# * Technically static-libs is needed on zlib, util-linux and perhaps more, but
+# these are used by GIO, which glib[static-libs] consumers don't really seem
+# to need at all, thus not imposing the deps for now and once some consumers
+# are actually found to static link libgio-2.0.a, we can revisit and either add
+# them or just put the (build) deps in that rare consumer instead of recursive
+# RDEPEND here (due to lack of recursive DEPEND).
+RDEPEND="
+	!<dev-util/gdbus-codegen-${PV}
+	>=virtual/libiconv-0-r1[${MULTILIB_USEDEP}]
+	>=dev-libs/libpcre-8.31:3[${MULTILIB_USEDEP},static-libs?]
+	>=virtual/libffi-3.0.13-r1:=[${MULTILIB_USEDEP}]
+	>=sys-libs/zlib-1.2.8-r1[${MULTILIB_USEDEP}]
+	>=virtual/libintl-0-r2[${MULTILIB_USEDEP}]
+	kernel_linux? ( >=sys-apps/util-linux-2.23[${MULTILIB_USEDEP}] )
+	selinux? ( >=sys-libs/libselinux-2.2.2-r5[${MULTILIB_USEDEP}] )
+	xattr? ( !elibc_glibc? ( >=sys-apps/attr-2.4.47-r1[${MULTILIB_USEDEP}] ) )
+	cros_host? ( virtual/libelf:0= )
+	fam? ( >=virtual/fam-0-r1[${MULTILIB_USEDEP}] )
+	sysprof? ( >=dev-util/sysprof-capture-3.38:4[${MULTILIB_USEDEP}] )
+"
+DEPEND="${RDEPEND}"
+# libxml2 used for optional tests that get automatically skipped
+BDEPEND="
+	doc? (
+		app-text/docbook-xsl-stylesheets
+		dev-libs/libxslt
+	)
+	>=sys-devel/gettext-0.19.8
+	gtk-doc? ( >=dev-util/gtk-doc-1.33
+		app-text/docbook-xml-dtd:4.2
+		app-text/docbook-xml-dtd:4.5 )
+	systemtap? ( >=dev-util/systemtap-1.3 )
+	${PYTHON_DEPS}
+	test? ( >=sys-apps/dbus-1.2.14 )
+	virtual/pkgconfig
+"
+# TODO: >=dev-util/gdbus-codegen-${PV} test dep once we modify gio/tests/meson.build to use external gdbus-codegen
+
+PDEPEND="
+	dbus? ( gnome-base/dconf )
+	mime? ( x11-misc/shared-mime-info )
+"
+# shared-mime-info needed for gio/xdgmime, bug #409481
+# dconf is needed to be able to save settings, bug #498436
+
+MULTILIB_CHOST_TOOLS=(
+	/usr/bin/gio-querymodules$(get_exeext)
+)
+
+pkg_setup() {
+	if use kernel_linux ; then
+		CONFIG_CHECK="~INOTIFY_USER"
+		if use test ; then
+			CONFIG_CHECK="~IPV6"
+			WARNING_IPV6="Your kernel needs IPV6 support for running some tests, skipping them."
+		fi
+		linux-info_pkg_setup
+	fi
+	python-any-r1_pkg_setup
+}
+
+src_prepare() {
+	if use test; then
+		# TODO: Review the test exclusions, especially now with meson
+		# Disable tests requiring dev-util/desktop-file-utils when not installed, bug #286629, upstream bug #629163
+		if ! has_version dev-util/desktop-file-utils ; then
+			ewarn "Some tests will be skipped due dev-util/desktop-file-utils not being present on your system,"
+			ewarn "think on installing it to get these tests run."
+			sed -i -e "/appinfo\/associations/d" gio/tests/appinfo.c || die
+			sed -i -e "/g_test_add_func/d" gio/tests/desktop-app-info.c || die
+		fi
+
+		# gdesktopappinfo requires existing terminal (gnome-terminal or any
+		# other), falling back to xterm if one doesn't exist
+		#if ! has_version x11-terms/xterm && ! has_version x11-terms/gnome-terminal ; then
+		#	ewarn "Some tests will be skipped due to missing terminal program"
+		# These tests seem to sometimes fail even with a terminal; skip for now and reevulate with meson
+		# Also try https://gitlab.gnome.org/GNOME/glib/issues/1601 once ready for backport (or in a bump) and file new issue if still fails
+		sed -i -e "/appinfo\/launch/d" gio/tests/appinfo.c || die
+		# desktop-app-info/launch* might fail similarly
+		sed -i -e "/desktop-app-info\/launch-as-manager/d" gio/tests/desktop-app-info.c || die
+		#fi
+
+		# https://bugzilla.gnome.org/show_bug.cgi?id=722604
+		sed -i -e "/timer\/stop/d" glib/tests/timer.c || die
+		sed -i -e "/timer\/basic/d" glib/tests/timer.c || die
+
+		ewarn "Tests for search-utils have been skipped"
+		sed -i -e "/search-utils/d" glib/tests/meson.build || die
+
+		# Play nice with network-sandbox, but this approach would defeat the purpose of the test
+		#sed -i -e "s/localhost/127.0.0.1/g" gio/tests/gsocketclient-slow.c || die
+	else
+		# Don't build tests, also prevents extra deps, bug #512022
+		sed -i -e '/subdir.*tests/d' {.,gio,glib}/meson.build || die
+	fi
+
+	# Don't build fuzzing binaries - not used
+	sed -i -e '/subdir.*fuzzing/d' meson.build || die
+
+	# gdbus-codegen is a separate package
+	sed -i -e '/install_dir/d' gio/gdbus-2.0/codegen/meson.build || die
+
+	# Same kind of meson-0.50 issue with some installed-tests files; will likely be fixed upstream soon
+	sed -i -e '/install_dir/d' gio/tests/meson.build || die
+
+	cat > "${T}/glib-test-ld-wrapper" <<-EOF
+		#!/usr/bin/env sh
+		exec \${LD:-ld} "\$@"
+	EOF
+	chmod a+x "${T}/glib-test-ld-wrapper" || die
+	sed -i -e "s|'ld'|'${T}/glib-test-ld-wrapper'|g" gio/tests/meson.build || die
+
+	xdg_src_prepare
+	gnome2_environment_reset
+	# TODO: python_name sedding for correct python shebang? Might be relevant mainly for glib-utils only
+}
+
+multilib_src_configure() {
+	if use debug; then
+		append-cflags -DG_ENABLE_DEBUG
+	else
+		append-cflags -DG_DISABLE_CAST_CHECKS # https://gitlab.gnome.org/GNOME/glib/issues/1833
+	fi
+
+	# TODO: figure a way to pass appropriate values for all cross properties that glib uses (search for get_cross_property)
+	#if tc-is-cross-compiler ; then
+		# https://bugzilla.gnome.org/show_bug.cgi?id=756473
+		# TODO-meson: This should be in meson cross file as 'growing_stack' property; and more, look at get_cross_property
+		#case ${CHOST} in
+		#hppa*|metag*) export glib_cv_stack_grows=yes ;;
+		#*)            export glib_cv_stack_grows=no ;;
+		#esac
+	#fi
+
+	local emesonargs=(
+		-Ddefault_library=$(usex static-libs both shared)
+		$(meson_feature selinux)
+		$(meson_use xattr)
+		-Dlibmount=enabled # only used if host_system == 'linux'
+		-Dinternal_pcre=false
+		-Dman=$(multilib_native_usex doc true false)
+		$(meson_use systemtap dtrace)
+		$(meson_use systemtap)
+		-Dgtk_doc=$(multilib_native_usex gtk-doc true false)
+		$(meson_use fam)
+		-Dinstalled_tests=false
+		-Dnls=enabled
+		-Doss_fuzz=disabled
+	)
+	meson_src_configure
+}
+
+multilib_src_compile() {
+	meson_src_compile
+}
+
+multilib_src_test() {
+	export XDG_CONFIG_DIRS=/etc/xdg
+	export XDG_DATA_DIRS=/usr/local/share:/usr/share
+	export G_DBUS_COOKIE_SHA1_KEYRING_DIR="${T}/temp"
+	export LC_TIME=C # bug #411967
+	unset GSETTINGS_BACKEND # bug #596380
+	python_setup
+
+	# Related test is a bit nitpicking
+	mkdir "$G_DBUS_COOKIE_SHA1_KEYRING_DIR"
+	chmod 0700 "$G_DBUS_COOKIE_SHA1_KEYRING_DIR"
+
+	meson_src_test --timeout-multiplier 2 --no-suite flaky
+}
+
+multilib_src_install() {
+	meson_src_install
+	keepdir /usr/$(get_libdir)/gio/modules
+}
+
+multilib_src_install_all() {
+	if use doc ; then
+		einstalldocs
+	fi
+
+	# These are installed by dev-util/glib-utils
+	# TODO: With patching we might be able to get rid of the python-any deps and removals, and test depend on glib-utils instead; revisit now with meson
+	rm "${ED}/usr/bin/glib-genmarshal" || die
+	rm "${ED}/usr/bin/glib-mkenums" || die
+	rm "${ED}/usr/bin/gtester-report" || die
+	use doc && (
+		rm "${ED}/usr/share/man/man1/glib-genmarshal.1" || die
+		rm "${ED}/usr/share/man/man1/glib-mkenums.1" || die
+		rm "${ED}/usr/share/man/man1/gtester-report.1" || die
+		# gdbus-codegen manpage installed by dev-util/gdbus-codegen
+		rm "${ED}/usr/share/man/man1/gdbus-codegen.1" || die
+	)
+}
+
+pkg_preinst() {
+	xdg_pkg_preinst
+
+	# Make gschemas.compiled belong to glib alone
+	local cache="/usr/share/glib-2.0/schemas/gschemas.compiled"
+
+	if [[ -e ${EROOT}${cache} ]]; then
+		cp "${EROOT}"${cache} "${ED}"/${cache} || die
+	else
+		touch "${ED}"${cache} || die
+	fi
+
+	multilib_pkg_preinst() {
+		# Make giomodule.cache belong to glib alone
+		local cache="/usr/$(get_libdir)/gio/modules/giomodule.cache"
+
+		if [[ -e ${EROOT}${cache} ]]; then
+			cp "${EROOT}"${cache} "${ED}"${cache} || die
+		else
+			touch "${ED}"${cache} || die
+		fi
+	}
+
+	# Don't run the cache ownership when cross-compiling, as it would end up with an empty cache
+	# file due to inability to create it and GIO might not look at any of the modules there
+	if ! tc-is-cross-compiler ; then
+		multilib_foreach_abi multilib_pkg_preinst
+	fi
+}
+
+pkg_postinst() {
+	xdg_pkg_postinst
+	# glib installs no schemas itself, but we force update for fresh install in case
+	# something has dropped in a schemas file without direct glib dep; and for upgrades
+	# in case the compiled schema format could have changed
+	gnome2_schemas_update
+
+	multilib_pkg_postinst() {
+		gnome2_giomodule_cache_update \
+			|| die "Update GIO modules cache failed (for ${ABI})"
+	}
+	if ! tc-is-cross-compiler ; then
+		multilib_foreach_abi multilib_pkg_postinst
+	else
+		ewarn "Updating of GIO modules cache skipped due to cross-compilation."
+		ewarn "You might want to run gio-querymodules manually on the target for"
+		ewarn "your final image for performance reasons and re-run it when packages"
+		ewarn "installing GIO modules get upgraded or added to the image."
+	fi
+}
+
+pkg_postrm() {
+	xdg_pkg_postrm
+	gnome2_schemas_update
+
+	if [[ -z ${REPLACED_BY_VERSION} ]]; then
+		multilib_pkg_postrm() {
+			rm -f "${EROOT}"/usr/$(get_libdir)/gio/modules/giomodule.cache
+		}
+		multilib_foreach_abi multilib_pkg_postrm
+		rm -f "${EROOT}"/usr/share/glib-2.0/schemas/gschemas.compiled
+	fi
+}
diff --git a/dev-util/glib-utils/Manifest b/dev-util/glib-utils/Manifest
index 02142f1..c9d7739 100644
--- a/dev-util/glib-utils/Manifest
+++ b/dev-util/glib-utils/Manifest
@@ -1 +1 @@
-DIST glib-2.58.3.tar.xz 4863648 BLAKE2B 4269bd6e80869f39d567917438f750561debb1b45d40ecea487d2e76e2468e07dc8d80a23678699f7b8f7778c2ed9d29e866ae5e33770f51ed00709dd5fe97eb SHA512 1e1cb5b607367dcbadb95563d463e81702cf396b28f1173f6d933707f4f3d5595a70225423e918807a05994a24f16fa3ac87d2ec67e4b670244ea99836634cce
+DIST glib-2.66.7.tar.xz 4844892 BLAKE2B 2d128e8c933a8c5bd27734e96e50244f27c29199823e2185e8cfa5b4bbc0ca23f761c9de275c9941672eb945e302178b3cb4b5bd577f375ad953a97dddc70e34 SHA512 f6e6cc0fe2ab4a31a623bf9a1e63f833783e044e7ed55b66a84fc0cbf1410eec233fe0e226abb20aac0e40167a9624bf5e65197f9eed879da1293af44408d530
diff --git a/dev-util/glib-utils/glib-utils-2.58.3.ebuild b/dev-util/glib-utils/glib-utils-2.66.7-r1.ebuild
similarity index 93%
rename from dev-util/glib-utils/glib-utils-2.58.3.ebuild
rename to dev-util/glib-utils/glib-utils-2.66.7-r1.ebuild
index 3be8146..1d006f6 100644
--- a/dev-util/glib-utils/glib-utils-2.58.3.ebuild
+++ b/dev-util/glib-utils/glib-utils-2.66.7-r1.ebuild
@@ -1,8 +1,8 @@
-# Copyright 1999-2019 Gentoo Authors
+# Copyright 1999-2020 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI=5
-PYTHON_COMPAT=( python{2_7,3_5,3_6,3_7} )
+EAPI=7
+PYTHON_COMPAT=( python3_{6,7,8} )
 GNOME_ORG_MODULE="glib"
 
 inherit gnome.org python-single-r1
@@ -12,7 +12,7 @@
 
 LICENSE="LGPL-2.1+"
 SLOT="0" # /usr/bin utilities that can't be parallel installed by their nature
-IUSE=""
+IUSE="cros-host"
 REQUIRED_USE="${PYTHON_REQUIRED_USE}"
 
 KEYWORDS="*"
@@ -20,10 +20,13 @@
 RDEPEND="${PYTHON_DEPS}
 	!<dev-libs/glib-2.56.2:2
 "
-DEPEND="${RDEPEND}
+BDEPEND="
 	dev-libs/libxslt
 	app-text/docbook-xsl-stylesheets
 "
+DEPEND="${RDEPEND}
+	cros-host? ( ${BDEPEND} )
+"
 
 src_configure() { :; }