New package: {sci-libs,dev-python}/lightgbm

dev-python/lightgbm/Manifest

@@ -0,0 +1 @@
+DIST lightgbm-4.5.0.tar.gz 1701072 BLAKE2B 1323d27ad7f34b43699c7d6605d34a6cbca4c85ace1ffdecfd3d169132c6bf97ae23b48634957af093d235f37c85d7ad157a16d93b15eab4ad5bae38ac938aff SHA512 66cf32bd9dc9cd74629052e59b6fe8e404c264a9ef529d40b073685c5ded9a1deb028e78b7ccff48cfe78f29fcc9746ec957a38b14d86c7fa89fd3ed88fbf6ac

dev-python/lightgbm/files/lightgbm-4.5.0-loadlib.patch

@@ -0,0 +1,14 @@
+Index: lightgbm-4.5.0/lightgbm/basic.py
+===================================================================
+--- lightgbm-4.5.0.orig/lightgbm/basic.py
++++ lightgbm-4.5.0/lightgbm/basic.py
+@@ -261,8 +261,7 @@ def _log_callback(msg: bytes) -> None:
+
+ def _load_lib() -> ctypes.CDLL:
+     """Load LightGBM library."""
+-    lib_path = find_lib_path()
+-    lib = ctypes.cdll.LoadLibrary(lib_path[0])
++    lib = ctypes.cdll.LoadLibrary("lib_lightgbm.so")
+     lib.LGBM_GetLastError.restype = ctypes.c_char_p
+     callback = ctypes.CFUNCTYPE(None, ctypes.c_char_p)
+     lib.callback = callback(_log_callback)  # type: ignore[attr-defined]

dev-python/lightgbm/lightgbm-4.5.0.ebuild

@@ -0,0 +1,30 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..12} )
+DISTUTILS_USE_PEP517=scikit-build-core
+
+inherit distutils-r1 pypi
+
+DESCRIPTION="LightGBM Python Package"
+HOMEPAGE="https://github.com/microsoft/LightGBM"
+SRC_URI="$(pypi_sdist_url "${PN^}" "${PV}")"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64"
+
+RDEPEND="dev-python/wheel[${PYTHON_USEDEP}]
+	dev-python/numpy[${PYTHON_USEDEP}]
+	dev-python/scipy[${PYTHON_USEDEP}]
+	dev-python/scikit-learn[${PYTHON_USEDEP}]
+	sci-libs/lightgbm"
+distutils_enable_tests pytest
+
+PATCHES=( "${FILESDIR}/${PN}-4.5.0-loadlib.patch" )
+
+python_compile() {
+	SKBUILD_WHEEL_CMAKE=false distutils-r1_python_compile
+}

dev-python/lightgbm/metadata.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM 'http://www.gentoo.org/dtd/metadata.dtd'>
+<pkgmetadata>
+  <maintainer type="person">
+    <email>[email protected]</email>
+  </maintainer>
+  <maintainer type="person">
+    <email>[email protected]</email>
+  </maintainer>
+  <upstream>
+    <remote-id type="github">microsoft/LightGBM</remote-id>
+    <remote-id type="pypi">Lightgbm</remote-id>
+  </upstream>
+</pkgmetadata>

sci-libs/lightgbm/Manifest

@@ -0,0 +1,5 @@
+DIST LightGBM-4.5.0.tar.gz 6163768 BLAKE2B ad5c737bd18b60617e5b7a8f95845b4e0f5ff522a0a16d995b12109e73aa3dc224dd32f621500196b465842aeeb3bd62c483d0f8646ec53cc43bf90788da8b95 SHA512 f968f984a0881a5eadd898dded367b799b619e3cc80415dec8b623897e84d7e1e1034f20179125354b93759ea1b8a3e334cfa506427442810ef098bc93fd4634
+DIST compute-36350b7d.tar.gz 377161 BLAKE2B cf9ed88b147fc07d7d0c562f699d5ea660c085860c6a44de2fb8585cd2574141a48aa939024fbbbbe9a0ded38de955f3f3be31b7b8481edfaf22ff14ce842956 SHA512 66ab1b8182e0a06f8a1fb3e59b2fb94bae89e7b72f8ec8d14d40811751768721d399c00cbacb74c6d55c11d91cc8b827409be07d8411a0f4c9daf3be57238bee
+DIST double-conversion-f4cb2384.tar.gz 7027061 BLAKE2B d08b61b51728ff3ee01a1bd6c4aaed70c1afca6e8202920f4b01f79f6500a1ab230e4daf73fe0fd24f79e2135853051c8600ea89e8e331f36bd70875871af57d SHA512 8a0dfabe25b40d13a00417df0779a86477ce994e98ce7dfc7196464bf83fd8f29fbb8153a1419be9354b2afbb04645b41a0d103bfe847468de0cc9800644b7ba
+DIST fast_double_parser-efec0353.tar.gz 636133 BLAKE2B 5a0244b4ddf1a0eae52cc26ae0749c2ca34f76f665160635eea94da4db0915b4d848cf2ba09c7173c058e2da305a89f6e90517d703e36a2ed565eabc264811de SHA512 2917167f05a270253b4c6360b598a69df43e8305601abb59d12c4085dd5db0b93b0e8725f61595a0424f0a26b59ec1a97d58df1ab33674ce36f0da9bd818c485
+DIST fmt-f5e54359.tar.gz 851890 BLAKE2B 025d29873ea8c65580c4681410d03d3dfaddde6daf18c436bf4a3f97be53d73439cf41e32e051095cb5b838560ddcd22f986c66300753155fd3e10dff16034d3 SHA512 0810d7d96d96aea0d02648eb5d201f8bed22d0b0ddc0ed22e7d4f4dd11ea05bf90fc23e067c274f16e1ff566d0326942ccd55696cdab1a4a9ba01e6553280999

sci-libs/lightgbm/files/lightgbm-4.5.0-eigen3.patch

@@ -0,0 +1,13 @@
+Index: LightGBM/src/treelearner/linear_tree_learner.cpp
+===================================================================
+--- LightGBM.orig/src/treelearner/linear_tree_learner.cpp
++++ LightGBM/src/treelearner/linear_tree_learner.cpp
+@@ -4,7 +4,7 @@
+  */
+ #include "linear_tree_learner.h"
+
+-#include <Eigen/Dense>
++#include "eigen3/Eigen/Dense"
+
+ #include <algorithm>
+

sci-libs/lightgbm/files/lightgbm-4.5.0-libdir.patch

@@ -0,0 +1,36 @@
+From 9512c085f7a453a40ce85ce86233c5c6d32c7aaf Mon Sep 17 00:00:00 2001
+From: Yiyang Wu <[email protected]>
+Date: Fri, 8 Nov 2024 20:23:00 +0800
+Subject: [PATCH] Use cmake default install location
+
+Install 64bit dynamic and static libs to lib is not allowed in some
+distributions
+
+Reference: https://cmake.org/cmake/help/latest/command/install.html#signatures
+Signed-off-by: Yiyang Wu <[email protected]>
+---
+ CMakeLists.txt | 8 +-------
+ 1 file changed, 1 insertion(+), 7 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 183ef62b..b558b67b 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -829,13 +829,7 @@ if(APPLE AND USE_OPENMP AND NOT BUILD_STATIC_LIB)
+   )
+ endif()
+
+-install(
+-  TARGETS _lightgbm
+-  RUNTIME DESTINATION ${CMAKE_INSTALL_PREFIX}/bin
+-  LIBRARY DESTINATION ${CMAKE_INSTALL_PREFIX}/lib
+-  ARCHIVE DESTINATION ${CMAKE_INSTALL_PREFIX}/lib
+-)
+-
++install( TARGETS _lightgbm )
+ if(INSTALL_HEADERS)
+     install(
+       DIRECTORY ${LightGBM_HEADER_DIR}/LightGBM
+-- 
+2.47.0
+

sci-libs/lightgbm/lightgbm-4.5.0.ebuild

@@ -0,0 +1,49 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake cuda
+
+DESCRIPTION="Gradient boosting framework (GBM) based on decision tree algorithms"
+HOMEPAGE="https://github.com/microsoft/LightGBM"
+SRC_URI="https://github.com/microsoft/LightGBM/archive/refs/tags/v${PV}.tar.gz -> LightGBM-${PV}.tar.gz
+	https://github.com/boostorg/compute/archive/36350b7d.tar.gz -> compute-36350b7d.tar.gz
+	https://github.com/google/double-conversion/archive/f4cb2384.tar.gz -> double-conversion-f4cb2384.tar.gz
+	https://github.com/lemire/fast_double_parser/archive/efec0353.tar.gz -> fast_double_parser-efec0353.tar.gz
+	https://github.com/fmtlib/fmt/archive/f5e54359.tar.gz -> fmt-f5e54359.tar.gz"
+S="${WORKDIR}/LightGBM-${PV}"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE="cuda"
+
+RDEPEND="cuda? ( >=dev-util/nvidia-cuda-toolkit-11 )"
+DEPEND=">=dev-cpp/eigen-3.4"
+
+PATCHES=( "${FILESDIR}"/${PN}-4.5.0-eigen3.patch
+	"${FILESDIR}"/${PN}-4.5.0-libdir.patch )
+
+src_prepare() {
+	rmdir external_libs/compute && ln -sv "${WORKDIR}"/compute-36350b7de849300bd3d72a05d8bf890ca405a014 external_libs/compute || die
+	rmdir external_libs/fast_double_parser/benchmarks/dependencies/double-conversion && ln -sv "${WORKDIR}"/double-conversion-f4cb2384efa55dee0e6652f8674b05763441ab09 external_libs/fast_double_parser/benchmarks/dependencies/double-conversion || die
+	rmdir external_libs/fast_double_parser && ln -sv "${WORKDIR}"/fast_double_parser-efec03532ef65984786e5e32dbc81f6e6a55a115 external_libs/fast_double_parser || die
+	rmdir external_libs/fmt && ln -sv "${WORKDIR}"/fmt-f5e54359df4c26b6230fc61d38aa294581393084 external_libs/fmt || die
+	cmake_src_prepare
+	use cuda && cuda_src_prepare
+}
+
+src_configure() {
+	local mycmakeargs=()
+	if use cuda; then
+		# Host compiler should also be nvcc compatible,
+		# or error occur in the final linking
+		# CMakeLists also ensures that, so configure fails if we just set CMAKE_CUDA_FLAGS
+		PATH="$(cuda_gccdir):${PATH}"
+		mycmakeargs+=(
+			-DUSE_CUDA=ON
+		)
+	fi
+	cmake_src_configure
+}

sci-libs/lightgbm/metadata.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM 'http://www.gentoo.org/dtd/metadata.dtd'>
+<pkgmetadata>
+  <maintainer type="person">
+    <email>[email protected]</email>
+  </maintainer>
+  <maintainer type="person">
+    <email>[email protected]</email>
+  </maintainer>
+  <upstream>
+    <remote-id type="github">microsoft/LightGBM</remote-id>
+  </upstream>
+</pkgmetadata>