dev-python/threadpoolctl: Switch to PEP 517 build

Signed-off-by: Michał Górny <mgorny@gentoo.org>

dev-python/threadpoolctl/threadpoolctl-3.0.0-r1.ebuild

@@ -0,0 +1,25 @@
+# Copyright 2020-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+DISTUTILS_USE_PEP517=flit
+PYTHON_COMPAT=( python3_{8..10} )
+inherit distutils-r1
+
+DESCRIPTION="Limit the number of threads used in native libs that have their own threadpool"
+HOMEPAGE="https://github.com/joblib/threadpoolctl"
+SRC_URI="https://github.com/joblib/${PN}/archive/${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~riscv ~x86"
+
+BDEPEND="dev-python/cython[${PYTHON_USEDEP}]"
+
+distutils_enable_tests pytest
+
+src_prepare() {
+	sed -i -e '2,3s:flit:&_core:' pyproject.toml || die
+	distutils-r1_src_prepare
+}