# Copyright 1999-2026 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 EAPI=8 PYTHON_COMPAT=( python3_{12..14} ) PYPI_NO_NORMALIZE=1 DISTUTILS_USE_PEP517=setuptools inherit distutils-r1 git-r3 cmake DESCRIPTION="Tools to support the processing of materials-science data" HOMEPAGE="https://www.mantidproject.org/" EGIT_REPO_URI="https://github.com/mantidproject/mantid.git" if [[ ${PV} = *9999* ]] ; then EGIT_COMMIT="HEAD" else # Mantid tags drop Gentoo's underscore in prerelease components: # PV 6.15.0.4_rc1 -> tag v6.15.0.4rc1. EGIT_COMMIT=v${PV/_/} fi LICENSE="GPL-3" SLOT="0" KEYWORDS="" # ~amd64 — full src_unpack/prepare/configure/compile/install pipeline # verified clean against gcc-15 + Boost-1.90 + Qt-5.15.18 + Python 3.13. # The earlier HDF4-probe blocker (Gentoo bug 942866) is resolved by this # overlay's sci-libs/hdf-4.2.16. Install lands ~226 MiB under # /opt/mantid/{bin,lib,lib64,plugins,instrument,scripts}; workbench # launches under QT_API=pyqt5 (see pkg_postinst). Bumped from 6.15.0.3 # to 6.15.0.4rc1: the older tag hard-imported QtWebEngineWidgets at # workbench startup, and ::gentoo dropped both PyQtWebEngine and # dev-qt/qtwebengine:5 along with its Qt5 deprecation. Upstream removed # all WebEngine usage in 6.15.0.4rc1 (and HEAD), making the package # launchable again on a Qt5-only Gentoo install. # # Note: as of 6.15.x mantid has no GPU offload — the build system uses # only TBB + OpenMP for parallelism, and the source tree contains no # .cu/.cuh files or find_package(CUDA) calls. There is no `cuda` IUSE # to add here even when nvidia-cuda-toolkit is installed. IUSE="doc python test" RESTRICT="!test? ( test )" RDEPEND=" dev-libs/boost dev-util/ccache app-text/doxygen dev-cpp/eigen dev-cpp/gtest dev-python/euphonic[${PYTHON_USEDEP}] dev-python/graphviz[${PYTHON_USEDEP}] sci-libs/gsl >=dev-python/h5py-3.2.0[${PYTHON_USEDEP}] sci-libs/hdf5 dev-libs/jemalloc dev-libs/jsoncpp dev-libs/librdkafka dev-python/matplotlib[${PYTHON_USEDEP}] dev-cpp/muParser sci-libs/nexus[cxx] >=dev-python/numpy-1.22[${PYTHON_USEDEP}] dev-python/pip[${PYTHON_USEDEP}] dev-libs/poco dev-python/psutil[${PYTHON_USEDEP}] sci-libs/pycifrw[${PYTHON_USEDEP}] dev-python/pyqt5[${PYTHON_USEDEP}] dev-python/python-dateutil[${PYTHON_USEDEP}] dev-python/pyvista[${PYTHON_USEDEP}] dev-python/pyvistaqt[${PYTHON_USEDEP}] dev-python/pyyaml[${PYTHON_USEDEP}] x11-libs/qscintilla dev-qt/qtconcurrent:5 dev-qt/qtgui:5 dev-qt/qthelp:5 dev-qt/qtnetwork:5 dev-qt/qtprintsupport:5 dev-qt/qtsql:5 dev-qt/qtwidgets:5 dev-qt/qtxml:5 dev-python/orsopy[${PYTHON_USEDEP}] dev-python/qtconsole[${PYTHON_USEDEP}] dev-python/qtpy[${PYTHON_USEDEP},pyqt5(-)] dev-python/requests[${PYTHON_USEDEP}] dev-python/superqt[${PYTHON_USEDEP}] dev-python/scipy[${PYTHON_USEDEP}] dev-python/setuptools[${PYTHON_USEDEP}] dev-python/sphinx[${PYTHON_USEDEP}] dev-python/sphinx-bootstrap-theme[${PYTHON_USEDEP}] dev-cpp/tbb sci-libs/opencascade app-text/texlive-core dev-python/toml[${PYTHON_USEDEP}] dev-python/versioningit[${PYTHON_USEDEP}] dev-python/joblib[${PYTHON_USEDEP}] media-libs/mesa x11-apps/mesa-progs dev-vcs/pre-commit test? ( sys-apps/pciutils x11-libs/libXcomposite x11-libs/libXcursor x11-libs/libXdamage x11-libs/libXi x11-libs/libXScrnSaver x11-libs/libXtst dev-python/black[${PYTHON_USEDEP}] dev-util/cppcheck dev-util/gcovr dev-vcs/pre-commit[${PYTHON_USEDEP}] ) " BDEPEND=" dev-build/cmake dev-build/ninja " DEPEND="${BDEPEND} ${RDEPEND} " REQUIRED_USE="python? ( ${PYTHON_REQUIRED_USE} )" # Install under /opt rather than /usr: upstream's CMake drops data into # top-level /usr children (instrument/, plugins/, scripts/) that aren't # FHS-compliant, and mantid is distributed monolithically. A single /opt # prefix matches that shape and avoids a whole class of path-rewriting # patches. MY_PREFIX="/opt/mantid" src_prepare() { # The no-qt5-webwidgets patch removes a "Prefer WebEngineWidgets # over WebKitWidgets" block that fatal-errors when neither is # available; the block is present in v6.15.0.3 but already gone # from upstream main. Apply only when the block exists so the # 9999 ebuild doesn't trip on an obsolete patch. if grep -q 'Prefer WebEngineWidgets over WebkitWidgets' \ qt/widgets/common/CMakeLists.txt 2>/dev/null; then eapply "${FILESDIR}/${PN}-no-qt5-webwidgets.patch" fi # Gentoo's opencascade installs to /usr/{include,lib64}/opencascade # instead of /opt/OpenCASCADE; retarget the finder. sed -i -e 's:/OpenCASCADE:/opencascade:' buildconfig/CMake/FindOpenCascade.cmake || die sed -i -e 's:/opt/opencascade/inc:/usr/include/opencascade:' buildconfig/CMake/FindOpenCascade.cmake || die sed -i -e 's:/opt/opencascade/lib64:/usr/lib64/opencascade:' buildconfig/CMake/FindOpenCascade.cmake || die # gcc:13+ include-hygiene: PreviewManager.h transitively relied on # pulling in ; be explicit. sed -iez 's:#include :#include \n#include :' \ Framework/API/inc/MantidAPI/PreviewManager.h || die # Upstream generates a qt.conf with Prefix=../lib/qt5 (relative to # the bin dir). Under /opt/mantid/bin that points at an empty path; # force an absolute /usr/lib64/qt5 so Qt finds system plugins. sed -iez 's!../lib/qt5\n\n!/usr/lib64/qt5\n\n!' \ qt/applications/workbench/CMakeLists.txt || die # Gentoo's dev-libs/boost-1.90 ships CMake configs for most # components except boost_system (header-only in newer Boost, # no shared lib / cmake config installed). Drop `system` from # the required components list. sed -i -e 's/COMPONENTS date_time regex serialization filesystem system/COMPONENTS date_time regex serialization filesystem/' \ buildconfig/CMake/CommonSetup.cmake || die # buildconfig/CMake/PythonPackageTargetFunctions.cmake runs pip in # two places we have to fix up: # # (a) build-time `pip install --editable .` to drop a .egg-link in # the build dir for in-tree development. Needs the Gentoo flags # --break-system-packages (defeat PEP 668 on the marker-tagged # system Python) and --no-build-isolation (use system setuptools # instead of fetching from pypi, which the network sandbox blocks # anyway). Both flags also belong on (b). # # (b) install-time `pip install ` invoked from an install( # CODE ...) block. Same flags as (a), plus --prefix and --root so # pip honours portage's DESTDIR. Without --root=\$ENV{DESTDIR} # the install-time pip silently fails (PEP 668) or leaks into # /usr/lib/python.../site-packages on the build host instead of # landing in ${ED}/opt/mantid/lib/python.../site-packages, which # is why the in-tree Python wrappers (mantid/__init__.py, # mantid.simpleapi, the whole workbench/ package, etc.) never # made it into the merged install. # # Plus: dev-python/vcs-versioning is installed system-wide and auto- # hooks every setuptools build via an entry-point. Its git-based # file finder (vcs_versioning/_file_finders/_git.py) runs `git # rev-parse HEAD` in the source tree. Under portage's install phase # pip runs as root while the source is owned by the portage build # user; git refuses with "dubious ownership" and the file finder # raises SystemExit, killing pip metadata generation. The finder # checks SETUPTOOLS_SCM_IGNORE_DUBIOUS_OWNER and gracefully returns # None if it is set, letting setuptools' default file discovery # take over. SETUPTOOLS_SCM_PRETEND_VERSION isn't strictly needed # here since mantid's setup.py reads MANTID_VERSION_STR directly, # but we still set it to keep vcs-versioning's version-detection # hook from re-entering git later. sed -i \ -e 's|-m pip install --editable . --ignore-installed --no-deps|-m pip install --editable . --ignore-installed --no-deps --break-system-packages --no-build-isolation|' \ -e 's|python -m pip install ${CMAKE_CURRENT_SOURCE_DIR} --disable-pip-version-check --upgrade --no-deps --ignore-installed --no-cache-dir -vvv|python -m pip install ${CMAKE_CURRENT_SOURCE_DIR} --disable-pip-version-check --upgrade --no-deps --ignore-installed --no-cache-dir --break-system-packages --no-build-isolation --prefix=${CMAKE_INSTALL_PREFIX} --root=\\$ENV{DESTDIR} -vvv|' \ -e 's|MANTID_VERSION_STR=${_version_str}|MANTID_VERSION_STR=${_version_str} SETUPTOOLS_SCM_PRETEND_VERSION=${_version_str} SETUPTOOLS_SCM_IGNORE_DUBIOUS_OWNER=1|g' \ buildconfig/CMake/PythonPackageTargetFunctions.cmake || die cmake_src_prepare } src_configure() { python_setup local mycmakeargs=( -DCMAKE_INSTALL_PREFIX="${MY_PREFIX}" -DENABLE_DOCS=$(usex doc) ) cmake_src_configure } src_install() { cmake_src_install # Upstream ships two launchers shaped for conda layout: # * launch_mantidworkbench checks $CONDA_PREFIX and aborts otherwise # * launch_mantidworkbench.standalone hardcodes ${INSTALLDIR}/bin/python # Neither matches a Gentoo /opt install. Drop the conda one outright # and rewrite the standalone to use the system Python plus a PYTHONPATH # that includes our site-packages dir. rm "${ED}${MY_PREFIX}/bin/launch_mantidworkbench" || die local sp_dir="${MY_PREFIX}/lib/${EPYTHON}/site-packages" sed -i \ -e "s|\${INSTALLDIR}/bin/python|${EPYTHON}|" \ -e "s|LOCAL_PYTHONPATH=\${INSTALLDIR}/bin:\${INSTALLDIR}/lib:\${INSTALLDIR}/plugins|LOCAL_PYTHONPATH=${sp_dir}:\${INSTALLDIR}/bin:\${INSTALLDIR}/lib:\${INSTALLDIR}/plugins|" \ "${ED}${MY_PREFIX}/bin/launch_mantidworkbench.standalone" || die # Wire /opt/mantid into PATH, LDPATH, and PYTHONPATH via env.d so # `import mantid` etc. work in any shell after `env-update && source # /etc/profile` (or a new shell). PYTHONPATH covers: # * site-packages — the Python wrappers (mantid, mantidqt, workbench) # * bin — Mantid.properties (mantid resolves bin-relative # paths from sys.path entries via _bin_dirs()) # * plugins — algorithm/qt5 .so plugins enumerated at startup newenvd - 99mantid <<-EOF PATH=${MY_PREFIX}/bin ROOTPATH=${MY_PREFIX}/bin LDPATH=${MY_PREFIX}/lib PYTHONPATH=${sp_dir}:${MY_PREFIX}/bin:${MY_PREFIX}/plugins EOF } pkg_postinst() { elog "Mantid is installed under ${MY_PREFIX} rather than /usr." elog "Rationale: upstream's CMake install drops data into top-level" elog "/usr children (instrument/, plugins/, scripts/) instead of the" elog "FHS-compliant /usr/{lib64,share}/mantid/..., and the project is" elog "distributed monolithically. A single /opt prefix matches that" elog "shape and avoids a substantial path-rewriting patch set." elog elog "PATH, LDPATH, and PYTHONPATH are wired up via /etc/env.d/99mantid." elog "Run 'env-update && source /etc/profile' or start a new shell" elog "before invoking mantid." elog elog "Mantid is Qt5-only. QtPy defaults to PyQt6 in ::gentoo, which" elog "is missing Qt5-era widgets mantid relies on. Set QT_API=pyqt5" elog "in the environment when launching. The full invocation:" elog elog " env QT_API=pyqt5 \\" elog " LD_PRELOAD=/usr/lib64/libtbbmalloc_proxy.so.2 \\" elog " PYTHONPATH=${MY_PREFIX}/lib/${EPYTHON}/site-packages:${MY_PREFIX}/bin:${MY_PREFIX}/plugins \\" elog " ${MY_PREFIX}/bin/workbench" elog elog "After 'env-update && source /etc/profile' the PYTHONPATH and" elog "LD_PRELOAD pieces simplify to:" elog elog " QT_API=pyqt5 ${MY_PREFIX}/bin/workbench" elog elog "(LD_PRELOAD of libtbbmalloc_proxy is a perf optimisation; the" elog "shipped launcher ${MY_PREFIX}/bin/launch_mantidworkbench.standalone" elog "sets it for you and is the recommended entry point.)" }