commit:     750a63de656212034e3106e0a2685f02248ade81
Author:     Gábor Oszkár Dénes <gaboroszkar <AT> protonmail <DOT> com>
AuthorDate: Tue Mar  8 20:38:52 2022 +0000
Commit:     Sam James <sam <AT> gentoo <DOT> org>
CommitDate: Fri Jul 15 02:12:01 2022 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=750a63de

dev-python/qiskit-aer: new package

Closes: https://bugs.gentoo.org/834772
Package-Manager: Portage-3.0.30, Repoman-3.0.3
Signed-off-by: Gábor Oszkár Dénes <gaboroszkar <AT> protonmail.com>
Closes: https://github.com/gentoo/gentoo/pull/24455
Signed-off-by: Sam James <sam <AT> gentoo.org>

 dev-python/qiskit-aer/Manifest                     |  1 +
 ...qiskit-aer-0.10.3-remove-cmake-dependency.patch | 10 +++
 dev-python/qiskit-aer/metadata.xml                 | 21 +++++
 dev-python/qiskit-aer/qiskit-aer-0.10.3.ebuild     | 92 ++++++++++++++++++++++
 4 files changed, 124 insertions(+)

diff --git a/dev-python/qiskit-aer/Manifest b/dev-python/qiskit-aer/Manifest
new file mode 100644
index 000000000000..1dd95accffd1
--- /dev/null
+++ b/dev-python/qiskit-aer/Manifest
@@ -0,0 +1 @@
+DIST qiskit-aer-0.10.3.gh.tar.gz 6657490 BLAKE2B 
443f7df2259c720fb93a60659da9b1cded25f9dbdf585bd0322e9f4effe4c5955daf6587d6c3964ab4a7e4a8bf6270f857abae1cf4e6b0718801daa6a96c2aec
 SHA512 
c882624bac373566b003a01fffa6963d4ad8796ce18786b50ef85350daac26814c147b36067eb6fce4f264919b3680246e767b5c13ac338817fd394620392079

diff --git 
a/dev-python/qiskit-aer/files/qiskit-aer-0.10.3-remove-cmake-dependency.patch 
b/dev-python/qiskit-aer/files/qiskit-aer-0.10.3-remove-cmake-dependency.patch
new file mode 100644
index 000000000000..44917bbf8cca
--- /dev/null
+++ 
b/dev-python/qiskit-aer/files/qiskit-aer-0.10.3-remove-cmake-dependency.patch
@@ -0,0 +1,10 @@
+--- a/setup.py 2022-02-09 17:41:55.000000000 +0100
++++ b/setup.py 2022-03-02 14:44:04.344551645 +0100
+@@ -72,7 +72,6 @@
+ 
+ setup_requirements = common_requirements + [
+     'scikit-build>=0.11.0',
+-    'cmake!=3.17,!=3.17.0',
+     'pybind11>=2.6',
+ ]
+ 

diff --git a/dev-python/qiskit-aer/metadata.xml 
b/dev-python/qiskit-aer/metadata.xml
new file mode 100644
index 000000000000..766391b439a3
--- /dev/null
+++ b/dev-python/qiskit-aer/metadata.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd";>
+<pkgmetadata>
+  <!-- comaintainers-welcomed -->
+  <maintainer type="person" proxied="yes">
+    <email>[email protected]</email>
+    <name>Gábor Oszkár Dénes</name>
+  </maintainer>
+  <maintainer type="project" proxied="proxy">
+    <email>[email protected]</email>
+    <name>Proxy Maintainers</name>
+  </maintainer>
+  <longdescription>
+    Qiskit is an open-source framework for working with noisy quantum 
computers at the level of pulses, circuits, and algorithms.
+    Qiskit is made up of elements that each work together to enable quantum 
computing. This element is Aer, which provides high-performance quantum 
computing simulators with realistic noise models.
+  </longdescription>
+  <upstream>
+    <remote-id type="github">Qiskit/qiskit-aer</remote-id>
+    <remote-id type="pypi">qiskit-aer</remote-id>
+  </upstream>
+</pkgmetadata>

diff --git a/dev-python/qiskit-aer/qiskit-aer-0.10.3.ebuild 
b/dev-python/qiskit-aer/qiskit-aer-0.10.3.ebuild
new file mode 100644
index 000000000000..3fc6e2707460
--- /dev/null
+++ b/dev-python/qiskit-aer/qiskit-aer-0.10.3.ebuild
@@ -0,0 +1,92 @@
+# 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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