ebuild, works for me

nunito-1.0.ebuild (text/plain), 471 bytes, created by Nikoli on 2012-07-24 19:54:19 UTC

# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI=4

inherit font

DESCRIPTION="A well balanced Sans Serif with rounded terminals"
HOMEPAGE="https://www.google.com/webfonts/specimen/Nunito https://code.google.com/p/googlefontdirectory/source/browse/nunito"
SRC_URI="mirror://gentoo/${P}.tar.xz"

LICENSE="OFL-1.1"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE=""

DEPEND=""
RDEPEND=""

FONT_SUFFIX="ttf"