This version is based on the ebuild in the overlay 4nykey.
--- /dev/null
+DIST libspiro-20200505.tar.gz 98636 BLAKE2B ee6d6fa36a49854292778f815cef977265c40dc869fdb2fd9ae496265259922e5a48b8162ec373fe6a5c597ae45291bec25235ecdba6fb54e1cf6688577f2230 SHA512 7d1fd2819a5edfe8ed92584d55e67d2e3df7fe8147c59c208e1a6519a22f18d3bf487f7885738f391ea70874ed33371b46f8875c131bc5e038ea16aec6cde2ca
+EBUILD libspiro-20200505.ebuild 690 BLAKE2B 9ca2beded8c95afa272069bfd3714b7880c27a62f8d5f39ef179aa5291dec3b1a3bd4d2037539d984e204495f146893fcce490bbe92a6480fa26e494f0e8af5c SHA512 ab7d5b80c3d5d1942ad6a4ecf4eadaf7421e412e70763d2b84ea54ba862f857b16edb8f1c620332386dafbbed6d083343373d790601ff2b5d84a5d42d1d9c242
+MISC metadata.xml 216 BLAKE2B 4d318c7eade1f2b0a1b1bee469d6e2b896216bdcf628f62dc3b3441068d3c3876f3ca60359acd83187a29d6fd9da8ae979685f62997529e39b0baaec1366d1fd SHA512 21f7af264d3f76a593a42f00ef34300a677e80340c9711a423159515d7971bb06343e5e59fb292bbc033813e357e898347c3ff8a300c8aa4a7183843e94368d5
--- /dev/null
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+if [[ -z ${PV%%*9999} ]]; then
+ inherit git-r3
+ EGIT_REPO_URI="https://github.com/fontforge/${PN}.git"
+else
+ MY_PV="${PV}"
+ if [[ -z ${PV%%*_p*} ]]; then
+ inherit vcs-snapshot
+ MY_PV="8c7a31e"
+ fi
+ SRC_URI="
+ https://github.com/fontforge/${PN}/archive/refs/tags/${MY_PV}.tar.gz -> ${P}.tar.gz
+ "
+ RESTRICT="primaryuri"
+ KEYWORDS="~amd64 ~x86"
+fi
+inherit autotools
+
+DESCRIPTION="A library for drawing beautiful curves"
+HOMEPAGE="https://github.com/fontforge/libspiro"
+
+LICENSE="GPL-3+"
+SLOT="0"
+IUSE=""
+
+DEPEND=""
+RDEPEND="${DEPEND}"
+
+src_prepare() {
+ default
+ eautoreconf
+}
--- /dev/null
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+ <maintainer type="person">
+ <email>4nykey@gmail.com</email>
+ </maintainer>
+</pkgmetadata>