Added working meld

version in portage is broken. It doesn't install gschema

dev-util/meld/Manifest

@@ -0,0 +1 @@
+DIST meld-3.20.2.tar.xz 593948 SHA256 ac0985f986ca44c25927ca31ac4d75b60f1f5f1a9e439bc1f3828ffc4d091d28 SHA512 9c9074cb879e3574eb9a1025eb1212771419ab0d8e92bf8a99f38e70ca583ff5c8cbeaccb87b414e6ff73a61afa08e10742991d574b810cc90e8c4a5ac82ddaa WHIRLPOOL 4b0a8397b94bfac675e062435f59f50821013c7f269dc0ad86bb22367f65b744a420908ebfdadc099ba1c76c8a5d3eeb91b44e0f289e43d0788cc7cfcedd20fe

dev-util/meld/files/3.20.2-install-gschema.patch

@@ -0,0 +1,14 @@
+diff --git a/setup.py b/setup.py
+index 2bf2f49..839376c 100755
+--- a/setup.py
++++ b/setup.py
+@@ -63,6 +63,9 @@ setup(
+         ('share/meld/ui',
+          glob.glob("data/ui/*.ui") + glob.glob("data/ui/*.xml")
+          ),
++        ('share/glib-2.0/schemas',
++         ['data/org.gnome.meld.gschema.xml']
++         ),
+     ],
+     cmdclass={
+         "build_i18n": meld.build_helpers.build_i18n,

dev-util/meld/meld-3.20.2-r1.ebuild

@@ -0,0 +1,43 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="6"
+PYTHON_REQ_USE="xml"
+PYTHON_COMPAT=( python3_{6,7,8} )
+DISTUTILS_SINGLE_IMPL=1
+DISTUTILS_USE_SETUPTOOLS=no
+
+inherit gnome2 distutils-r1
+
+DESCRIPTION="A graphical diff and merge tool"
+HOMEPAGE="http://meldmerge.org/"
+
+LICENSE="GPL-2+"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~ia64 ~ppc ~ppc64 ~sparc ~x86 ~amd64-linux ~x86-linux"
+IUSE=""
+PATCHES=( "${FILESDIR}/${PV}-install-gschema.patch" )
+
+RDEPEND="${PYTHON_DEPS}
+	>=dev-libs/glib-2.50:2
+	$(python_gen_cond_dep '
+		>=dev-python/pygobject-3.12:3[cairo,${PYTHON_MULTI_USEDEP}]
+	')
+	gnome-base/gsettings-desktop-schemas
+	>=x11-libs/gtk+-3.20:3[introspection]
+	>=x11-libs/gtksourceview-3.20.0:3.0[introspection]
+	>=x11-libs/pango-1.34[introspection]
+	x11-themes/hicolor-icon-theme
+"
+DEPEND="${RDEPEND}
+	dev-util/intltool
+	dev-util/itstool
+	sys-devel/gettext
+"
+# dev-python/distro is soft-required in BDEPEND for python3.8 and onwards,
+# but it's mainly needed for debian and derivatives - seems the fallback
+# works fine, as we aren't a special_case, just an annoying warning.
+
+python_compile_all() {
+	mydistutilsargs=( --no-update-icon-cache --no-compile-schemas )
+}

dev-util/meld/metadata.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+<maintainer type="project">
+	<email>gnome@gentoo.org</email>
+	<name>Gentoo GNOME Desktop</name>
+</maintainer>
+</pkgmetadata>