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diff --git a/sci-mathematics/flint/flint-3.1.3_p1-r3.ebuild b/sci-mathematics/flint/flint-3.1.3_p1-r3.ebuild
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+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..13} python3_13t )
+inherit flag-o-matic python-any-r1
+
+DESCRIPTION="Fast Library for Number Theory"
+HOMEPAGE="https://www.flintlib.org/"
+
+MY_PV="${PV/_/-}"
+SRC_URI="https://github.com/flintlib/flint/releases/download/v${MY_PV}/flint-${MY_PV}.tar.xz -> ${P}.tar.xz"
+S="${WORKDIR}/${PN}-${MY_PV}"
+LICENSE="LGPL-2.1+"
+
+# Based off the soname, e.g. /usr/lib64/libflint.so -> libflint.so.15
+SLOT="0/19"
+
+KEYWORDS="~amd64 ~arm ~arm64 ~loong ~ppc ~ppc64 ~riscv ~x86"
+IUSE="doc ntl test"
+
+RESTRICT="!test? ( test )"
+
+BDEPEND="${PYTHON_DEPS}
+	doc? (
+		app-text/texlive-core
+		dev-python/sphinx
+		dev-tex/latexmk
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+	)
+	ntl? ( dev-libs/ntl )
+"
+
+# NTL is never linked
+DEPEND="dev-libs/gmp:=
+	dev-libs/mpfr:=
+	virtual/cblas"
+
+# Flint 3.x includes arb. We include some version of NTL here if USE=ntl
+# is set so that consumers can depend on flint[ntl] to get a usable
+# Flint-NTL interface. But otherwise, NTL isn't actually needed at
+# runtime, even if Flint was built with USE=ntl.
+RDEPEND="${DEPEND}
+	ntl? ( dev-libs/ntl )
+	!sci-mathematics/arb"
+
+# The rst files are API docs, but they're very low-effort compared to
+# the PDF and HTML docs, so we ship them unconditionally and hide only
+# the painful parts behind USE=doc.
+DOCS="AUTHORS README.md doc/source/*.rst"
+
+PATCHES=(
+	"${FILESDIR}/flint-3.0.1-find-cblas.patch"
+	"${FILESDIR}/flint-3.1.3_p1-c99-I.patch"
+	"${FILESDIR}/flint-3.1.3_p1-fix-pc-location.patch"
+	"${FILESDIR}/flint-3.1.3_p1-c23.patch"
+)
+
+src_configure() {
+	# Test failures:
+	# * https://bugs.gentoo.org/934463
+	# * https://github.com/flintlib/flint/issues/2029
+	filter-flags -floop-nest-optimize \
+				 -ftree-loop-linear \
+				 -floop-strip-mine \
+				 -floop-block \
+				 -fgraphite-identity
+
+	# ABI needs to be unset because flint uses it internally for
+	# an incompatible purpose.
+	# --disable-assembly in an attempt to fix bug 946501
+	# --enable-debug just adds -g to your CFLAGS
+	# --enable-avx2 and --enable-avx512 just add "-mfoo" to CFLAGS
+	# --enable-gc affects thread-safety
+	local myeconfargs=(
+		ABI=""
+		--disable-assembly
+		--disable-debug
+		--with-blas
+		--with-gmp
+		--with-mpfr
+		--without-gc
+	)
+
+	# The NTL interface consists of a single header, NTL-interface.h,
+	# that is always installed. USE=ntl only determines whether or not
+	# the corresponding tests (which actually use NTL) are built and
+	# run. As a result, we don't care about USE=ntl without USE=test.
+	use test && myeconfargs+=( $(use_with ntl) )
+	econf "${myeconfargs[@]}"
+
+	if use doc; then
+		# Avoid the "html/_sources" directory that will contain a copy
+		# of the rst sources we've already installed, and also avoid
+		# installing html/objects.inv.
+		HTML_DOCS="doc/build/html/*.html
+			doc/build/html/*.js
+			doc/build/html/_static"
+		DOCS+=" doc/build/latex/Flint.pdf"
+	fi
+}
+
+src_compile() {
+	default
+
+	if use doc; then
+		pushd doc
+		emake html
+		emake latexpdf
+		popd
+	fi
+}