Added package ahead of main tree

https://github.com/gentoo/gentoo/pull/10077

dev-python/indexed_gzip/Manifest

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+DIST indexed_gzip-0.8.7.tar.gz 77640 BLAKE2B ff35693204a41df439b835f232b4e0ad5ceab19532a7f1f4a4aba5cfd810f447ea56c0f6cc0c5600f32317c5a4f4283a3dd5bc791dc9aec5742303728e76ecc2 SHA512 90872898b69269f42d28f61f7840879c1942060da923e8d5480c4f99feb160c1b03412378b1dda3cdf94f64434d81e4cdc524e19c268797f11444362149d0e18
+EBUILD indexed_gzip-0.8.7.ebuild 884 BLAKE2B 698c9ff852d950b78b6bb9004f0671f7c6ee737061f63c714873d44b31012d18183148dd6f2d68b0288dd9daf7d5e803f23735af7c781fe3db0b56b4bbb88fd0 SHA512 415634bc5522e392d0b73429c600116e4dd62577735d3a49d4a41b3d52defad130dcb3aa7215a42fdfcf9cc864ac46165a8778c53a130558da7c1a41ac006915
+MISC metadata.xml 902 BLAKE2B 8d1c493782d05a3c3626279266a44b0d0954977dccbd9d0a87e2f1e744dd6b87c21a8d61d4967da6ec278d09b87c5939b7997ab1138346e63616aa65de6c9b4e SHA512 c6bc3e97af583690a86620ed44925827d3320bd295018c44c7dd057848c6c9833906ac35e99404032377b8f6584b2bce92deb1465dec9e0f7daa21f66c52120b

dev-python/indexed_gzip/indexed_gzip-0.8.7.ebuild

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+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python2_7 python3_{5,6} )
+
+inherit distutils-r1 virtualx
+
+DESCRIPTION="Fast random access of gzip files in Python"
+HOMEPAGE="https://github.com/pauldmccarthy/indexed_gzip"
+SRC_URI="https://github.com/pauldmccarthy/indexed_gzip/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="ZLIB"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="test"
+
+DEPEND="
+	dev-python/cython[${PYTHON_USEDEP}]
+	test? (
+		dev-python/coverage[${PYTHON_USEDEP}]
+		dev-python/numpy[${PYTHON_USEDEP}]
+		dev-python/pytest[${PYTHON_USEDEP}]
+		dev-python/pytest-cov[${PYTHON_USEDEP}]
+	)
+	"
+RDEPEND=""
+
+src_compile() {
+	if use test; then
+		export INDEXED_GZIP_TESTING=1
+	fi
+	distutils-r1_src_compile
+}
+
+python_test() {
+	cp conftest.py "${BUILD_DIR}"
+	cd "${BUILD_DIR}" || die
+	pytest -v -s || die
+}

dev-python/indexed_gzip/metadata.xml

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+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>horea.christ@gmail.com</email>
+		<name>Horea Christian</name>
+	</maintainer>
+	<maintainer type="project">
+		<email>proxy-maint@gentoo.org</email>
+		<name>Proxy Maintainers</name>
+	</maintainer>
+	<longdescription lang="en">
+		The indexed_gzip project is a Python extension which aims to provide a
+		drop-in replacement for the built-in Python gzip.GzipFile class,
+		the IndexedGzipFile. This package was written to allow fast random
+		access of compressed NIFTI image files (for which GZIP is the de-facto
+		compression standard), but will work with any GZIP file.
+	</longdescription>
+	<upstream>
+		<remote-id type="github">pauldmccarthy/indexed_gzip</remote-id>
+		<remote-id type="pypi">indexed-gzip"</remote-id>
+	</upstream>
+</pkgmetadata>