dev-python/promise: add missing dep

dep of dev-python/graphene removed from ::gentoo

Package-Manager: Portage-3.0.8, Repoman-3.0.1
Signed-off-by: Andrew Ammerlaan <andrewammerlaan@riseup.net>

dev-python/promise/promise-2.3.0.ebuild

@@ -0,0 +1,26 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_{7,8} )
+
+inherit distutils-r1
+
+DESCRIPTION="Bytecode optimisation using staticness assertions"
+HOMEPAGE="https://github.com/syrusakbary/promise"
+SRC_URI="https://github.com/syrusakbary/promise/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+
+BDEPEND="test? (
+	dev-python/mock[${PYTHON_USEDEP}]
+	dev-python/pytest-asyncio[${PYTHON_USEDEP}]
+	dev-python/pytest-benchmark[${PYTHON_USEDEP}]
+)"
+
+RDEPEND="dev-python/six[${PYTHON_USEDEP}]"
+
+distutils_enable_tests pytest