Many changes to GXml package. Look at https://bugs.gentoo.org/654120#c6

dev-libs/gxml/Manifest

@@ -0,0 +1 @@
+DIST gxml-0.16.3.tar.xz 1316468 SHA256 520d4d779b1d31591762b2a98f84072531b9e17ac401df9668493e189eafc6ba SHA512 c2d8e14d360d6b6206c4bc2b8df2b73dbaa637fe2f573b4c36a3b47a247a9f365a6c1600cca97504381e565dc4a9696a73b847990e71bbcd274a7759f15326ce WHIRLPOOL 6b12195daf8921ddb7282882a397a6feefb718ec9ed72c2cdf12cdf139c9bca71a8bba95368310f823ceb3ec2f04430ab183cde3eb8afe8dd811244e36d81a76

dev-libs/gxml/gxml-0.16.3.ebuild

@@ -0,0 +1,24 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit autotools gnome.org
+
+DESCRIPTION="XML parser and writer, providing both Vala and C object oriented API through GObject"
+HOMEPAGE="https://wiki.gnome.org/GXml"
+
+LICENSE="LGPL-2.1+"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE=""
+
+RDEPEND="
+	dev-libs/libxml2
+	sys-devel/gettext
+"
+DEPEND="${RDEPEND}
+	dev-libs/glib
+	dev-libs/libgee
+	virtual/pkgconfig
+"

dev-libs/libgxml/Manifest

@@ -1 +0,0 @@
-DIST 0.16.3.tar.gz 336410 SHA256 f54bea42fb16fcd7d9a4b87acbca99cbce6622664c21cf7e73b62ff5ba341856 SHA512 5bae3662fb52413185a2801145dccddc05380862d3d8f667a6dbaa66107c17857c7b7d9df4a3b3ad672acf8cb45e835ce5220a39ab03a0113ed0ec2ec7c47f78 WHIRLPOOL 1f78231ceb9bda4486618b0b1330dd105c8bb9095e304025f2e77596ff178b37e12732b9cadb6cb81f21a51238e7dbd4998d02b63efe817b836e0df0a08a39e5

dev-libs/libgxml/libgxml-0.16.3.ebuild

@@ -1,31 +0,0 @@
-# Copyright 1999-2018 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=6
-
-inherit autotools
-
-DESCRIPTION="GXml library"
-HOMEPAGE="https://wiki.gnome.org/GXml"
-SRC_URI="https://github.com/GNOME/${PN}/archive/${PV}.tar.gz"
-
-LICENSE="LGPL-2.1"
-SLOT="0"
-KEYWORDS="~amd64 ~x86"
-IUSE=""
-
-DEPEND="
-	>=dev-lang/vala-0.40
-	dev-libs/libxml2
-"
-RDEPEND="${DEPEND}"
-
-src_unpack() {
-	default
-	mv "${WORKDIR}/gxml-${PV}" "${S}"
-}
-
-src_prepare() {
-	default
-	./autogen.sh || die
-}