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# Copyright 2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
DISTUTILS_USE_PEP517=setuptools
PYTHON_COMPAT=( python3_{8..10} )
inherit distutils-r1
DESCRIPTION="High performance simulator for quantum circuits that includes noise models"
HOMEPAGE="https://github.com/Qiskit/qiskit-aer"
SRC_URI="https://github.com/Qiskit/qiskit-aer/archive/refs/tags/${PV}.tar.gz -> ${P}.gh.tar.gz"
LICENSE="Apache-2.0"
SLOT="0"
KEYWORDS="~amd64"
# The reference implementation of BLAS/CBLAS is not compatible with qiskit-aer right now,
# because importing library causes an error.
# /usr/lib/python3.9/site-packages/qiskit/providers/aer/backends/controller_wrappers.cpython-39-x86_64-linux-gnu.so: undefined symbol: slamch_
# Using sci-libs/openblas instead here,
# with the option to switch between reference/openblas implementation runtime (eselect-ldso).
COMMON_DEPEND="
>=dev-python/numpy-1.16.3[${PYTHON_USEDEP}]
>=dev-cpp/nlohmann_json-3.1.1
>=dev-libs/spdlog-1.5.0
>=dev-cpp/muParserX-4.0.8
virtual/cblas[eselect-ldso]
sci-libs/openblas[eselect-ldso]"
BDEPEND="
${COMMON_DEPEND}
>dev-util/cmake-3.17
>=dev-python/scikit-build-0.11.0[${PYTHON_USEDEP}]
>=dev-python/pybind11-2.6[${PYTHON_USEDEP}]
test? (
dev-python/ddt[${PYTHON_USEDEP}]
dev-python/fixtures[${PYTHON_USEDEP}]
)"
RDEPEND="
${COMMON_DEPEND}
>=dev-python/qiskit-terra-0.19.1[${PYTHON_USEDEP}]
>=dev-python/scipy-1.0[${PYTHON_USEDEP}]"
distutils_enable_tests pytest
# Remove cmake dependency from setup.py because of
# invalid dependency description. We put this dependency check in BDEPEND.
PATCHES=( "${FILESDIR}/qiskit-aer-0.10.3-remove-cmake-dependency.patch" )
check_openblas() {
local libdir=$(get_libdir) me="openblas"
# check blas
local current_blas=$(eselect blas show ${libdir} | cut -d' ' -f2)
if [[ ${current_blas} != "${me}" ]]; then
eerror "Current eselect: BLAS/CBLAS ($libdir) -> [${current_blas}]."
eerror "To use qiskit-aer, you have to issue (as root):"
eerror "\t eselect blas set ${libdir} ${me}"
return 1
fi
return 0
}
pkg_setup() {
if use test; then
check_openblas
if [ $? -ne 0 ]; then
die "Set blas implementation to openblas using 'eselect blas set openblas'!"
fi
fi
}
python_prepare_all() {
export DISABLE_CONAN="ON"
export DISABLE_DEPENDENCY_INSTALL="ON"
distutils-r1_python_prepare_all
}
python_test() {
# We have to hide the source code directory so tests
# do not use these, but instead the compiled library.
mv qiskit qiskit.hidden || die
epytest
mv qiskit.hidden qiskit || die
}
pkg_postinst() {
check_openblas
}
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