dev-cpp/taskflow: add 4.0.0

Signed-off-by: Matthias Maier <tamiko@gentoo.org>

dev-cpp/taskflow/Manifest

@@ -2,3 +2,4 @@ DIST taskflow-3.10.0.tar.gz 55396434 BLAKE2B 8b2351de0ae898e4e42aec295723064ac21
 DIST taskflow-3.11.0.tar.gz 63626565 BLAKE2B 824b115f7d91039788996845e4edee1567e3af0e29c46c5dc4373b16981d3c2dd2d4290e5d7dd6a771ef999f8a75921128e14d70e16022880a5c1facc0935d00 SHA512 ca56f07db18767483ef6c2371a0dd9675e4f848cce891fe0ade85ec38609c08ddac2152a227a511c65901ade27439a988cdf70ad6841489f2bdbf712cde97f44
 DIST taskflow-3.6.0.tar.gz 66335249 BLAKE2B bcdc6d721e32b7c40f65ed5bd115d2c0083663e8b51c0e4460baa5f62e576382a45e8da735119b577d8a6ae7a64c72431654471a3b8335997fdf4f9191ad64af SHA512 1bf17b69cdb29b982fc74b9091f5b6c8fc4fd3004b26afe7e73e71569738e492cf8663b71d98cfbc4e240c08ceb8a99bf51cccce95254710722f89929a4bbea8
 DIST taskflow-3.7.0.tar.gz 66383509 BLAKE2B 92a9d56f0101d507b7f924ce9038d6d43a5f39c9270582f910644ad281ea2cee3f8fa39f3ee4e748f90d013d57a3bc2f24842e328ab345bc580d1a9a5de4f308 SHA512 2faecc9eaf9e7f24253a5aedbb4ef6164ba8b5181b7f2c65d8646c21300f28278d7817e928eeab7e85ec2b9644508a8665bab1a7482ec85a7f6de18cecb32d6f
+DIST taskflow-4.0.0.tar.gz 63725755 BLAKE2B 96eca19196444288eeedb70d9837276e36abfbbf86e209a065713a0c7f0cac3dcefbc3fb0f5b733db8309e11dc21570c58ee3ebcc4f812c70c0ac901caca463d SHA512 01da8c002774bac0e1651e32ca9cb6041ab17b78b2301f399640e0888d86fcd65657db7942e77b8a561dcefc0f137f4d698fd491d00fa1670ff85608d0e7597d

dev-cpp/taskflow/taskflow-4.0.0.ebuild

@@ -0,0 +1,38 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake
+
+DESCRIPTION="Modern C++ Parallel Task Programming"
+HOMEPAGE="https://taskflow.github.io"
+if [[ ${PV} == 9999 ]]; then
+	EGIT_REPO_URI="https://github.com/taskflow/${PN}.git"
+	inherit git-r3
+	S="${WORKDIR}/taskflow-${PV}"
+else
+	SRC_URI="https://github.com/${PN}/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+	S="${WORKDIR}/taskflow-${PV}"
+fi
+
+LICENSE="MIT"
+SLOT="0"
+IUSE="examples test"
+RESTRICT="!test? ( test )"
+
+DEPEND="test? ( dev-cpp/doctest )"
+
+HTML_DOCS=( docs/. )
+
+src_configure() {
+	# TODO: enable CUDA via USE flag
+	local mycmakeargs=(
+		-DTF_BUILD_CUDA=OFF
+		-DTF_BUILD_EXAMPLES=$(usex examples)
+		-DTF_BUILD_TESTS=$(usex test)
+	)
+
+	cmake_src_configure
+}