draft ebuild for pytorch

dev-python/pytorch/metadata.xml

@@ -0,0 +1,17 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>chr@chymera.eu</email>
+		<name>Horea Christian</name>
+	</maintainer>
+	<maintainer type="project">
+		<email>sci@gentoo.org</email>
+		<name>Gentoo Science Project</name>
+	</maintainer>
+	<longdescription lang="en">
+		PyTorch is a Python package that provides two high-level features, namely
+		Tensor computation (like NumPy) with strong GPU acceleration and deep
+		neural networks built on a tape-based autograd system.
+	</longdescription>
+</pkgmetadata>

dev-python/pytorch/pytorch-1.2.0.ebuild

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+# Copyright 1999-2018 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python2_7 python3_6 )
+
+inherit distutils-r1
+
+DESCRIPTION="Tensors and Dynamic neural networks in Python with strong GPU acceleration"
+HOMEPAGE="https://pytorch.org/"
+SRC_URI="https://github.com/pytorch/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="test"
+
+DEPEND="
+	test? ( dev-python/pytest[${PYTHON_USEDEP}] )
+	dev-python/setuptools[${PYTHON_USEDEP}]
+	"
+RDEPEND="
+	dev-python/cffi[${PYTHON_USEDEP}]
+	dev-python/future[${PYTHON_USEDEP}]
+	dev-python/numpy[${PYTHON_USEDEP}]
+	dev-python/pyyaml[${PYTHON_USEDEP}]
+	dev-python/requests[${PYTHON_USEDEP}]
+	dev-python/six[${PYTHON_USEDEP}]
+	dev-python/typing[${PYTHON_USEDEP}]
+	dev-util/cmake
+	dev-util/ninja
+	sci-libs/mkl
+	|| ( dev-util/nvidia-cuda-toolkit dev-libs/cudnn )
+	"
+