diff --git a/sci-libs/symengine/Manifest b/sci-libs/symengine/Manifest
index 00ef758860ea7..b1b6ae8fcacba 100644
--- a/sci-libs/symengine/Manifest
+++ b/sci-libs/symengine/Manifest
@@ -1,4 +1,2 @@
-DIST symengine-0.11.1.tar.gz 898181 BLAKE2B ef14e09ceb7e9783711ca7f9f06a59362c40222e7f85de5545be834ecd79bbf41fcd34141bb3a63c106ee45067dd0b957377f937097183ffd5b93c6943976571 SHA512 076aac35428589c5b3524a46bd939a3a3a7da44b1c866b5f71487678b27b6e48b4da034029f1630881d7713a9252e905411a04b8016c9ec56a608b6de23365ac
-DIST symengine-0.12.0.tar.gz 898768 BLAKE2B 81bca3f59e864d2e37598a058cb4db97b1f9c8536ee841c10df6f01c6322fa744281ecdeb338e5bf33bf599ead66adcaaa724650535df9b3d4bd7f07e22a3ad2 SHA512 fbc73a75299c19155a09f1854888a5050150aaad5bc3df683d43e8036af8005f8152a36ae79029e00bc8422c3edd7252baaf3a0da6a21d1d754d80a44c5c68bf
 DIST symengine-0.13.0.gh.tar.gz 942757 BLAKE2B 9c7e1a067fd2baff0c6fc360b1512f04ee0c77c1f408180c2384b29aac1feecc56bcd0453afce402c6963c2fc638202f623592eb5c0bcdf0a1715056e8fec425 SHA512 3d64149b507be586daabad4b9a99436b0d329b16b89db756c9a72812b37049199c0be1ed77b18d55063a6445d04bf44120e7afd90a961aebbc89df815e52ed5d
 DIST symengine-0.14.0.gh.tar.gz 944589 BLAKE2B f5c52080153f548e866aa98afee6296888b020b633b7738109fa839b7fd70cda5059c079ba119604571060639b33d46692818d99d8c7b9a371a59efd14eb9dce SHA512 2b6012ed65064ff81c8828032c5a3148340582274e3604db2a43797ddbaa191520ed97da41efc2e842ba4a25326f53becc51f1e98935e8c34625bc5eaac8397f
diff --git a/sci-libs/symengine/files/symengine-0.11.1-flint-3.patch b/sci-libs/symengine/files/symengine-0.11.1-flint-3.patch
deleted file mode 100644
index 662a4bc1bdc1b..0000000000000
--- a/sci-libs/symengine/files/symengine-0.11.1-flint-3.patch
+++ /dev/null
@@ -1,41 +0,0 @@
-From 1ef98559d75b4fa5b87dad2daff0d12e7857ac8d Mon Sep 17 00:00:00 2001
-From: Isuru Fernando <isuruf@gmail.com>
-Date: Mon, 30 Oct 2023 20:25:05 -0500
-Subject: [PATCH] Fix flint headers and replace use of deprecated funcs in
- flint2/3
-
----
- symengine/flint_wrapper.h | 8 ++++++--
- 1 file changed, 6 insertions(+), 2 deletions(-)
-
-diff --git a/symengine/flint_wrapper.h b/symengine/flint_wrapper.h
-index 21cfcef056..ade419088f 100644
---- a/symengine/flint_wrapper.h
-+++ b/symengine/flint_wrapper.h
-@@ -6,6 +6,8 @@
- 
- #include <flint/fmpz.h>
- #include <flint/fmpq.h>
-+#include <flint/fmpz_poly.h>
-+#include <flint/fmpz_poly_factor.h>
- #include <flint/fmpq_poly.h>
- 
- namespace SymEngine
-@@ -710,13 +712,15 @@ class fmpq_poly_wrapper
-     }
-     fmpq_poly_wrapper(const mpz_t z)
-     {
-+        fmpz_wrapper fz(z);
-         fmpq_poly_init(poly);
--        fmpq_poly_set_mpz(poly, z);
-+        fmpq_poly_set_fmpz(poly, fz.get_fmpz_t());
-     }
-     fmpq_poly_wrapper(const mpq_t q)
-     {
-+        fmpq_wrapper fq(q);
-         fmpq_poly_init(poly);
--        fmpq_poly_set_mpq(poly, q);
-+        fmpq_poly_set_fmpq(poly, fq.get_fmpq_t());
-     }
-     fmpq_poly_wrapper(const fmpq_wrapper &q)
-     {
diff --git a/sci-libs/symengine/metadata.xml b/sci-libs/symengine/metadata.xml
index fd0371e31c3d2..4f0f4a98c03a1 100644
--- a/sci-libs/symengine/metadata.xml
+++ b/sci-libs/symengine/metadata.xml
@@ -14,10 +14,6 @@
 		<remote-id type="github">symengine/symengine</remote-id>
 	</upstream>
 	<use>
-		<flag name="arb">
-			Add support for arb (<pkg>sci-mathematics/arb</pkg>)
-		</flag>
-		<flag name="benchmarks">Build benchmarks</flag>
 		<flag name="boost">
 			Add support for boost integers (<pkg>dev-libs/boost</pkg>)
 		</flag>
diff --git a/sci-libs/symengine/symengine-0.11.1.ebuild b/sci-libs/symengine/symengine-0.11.1.ebuild
deleted file mode 100644
index 5d03e6c71d711..0000000000000
--- a/sci-libs/symengine/symengine-0.11.1.ebuild
+++ /dev/null
@@ -1,105 +0,0 @@
-# Copyright 1999-2024 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=8
-
-LLVM_MAX_SLOT=16
-inherit cmake llvm toolchain-funcs
-
-DESCRIPTION="Fast symbolic manipulation library, written in C++"
-HOMEPAGE="https://github.com/symengine/symengine"
-SRC_URI="https://github.com/symengine/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
-
-LICENSE="MIT"
-SLOT="0/$(ver_cut 1-2)"
-KEYWORDS="amd64 ~arm arm64 ~loong ~ppc64 ~riscv ~x86 ~amd64-linux ~x86-linux"
-# BUILD_FOR_DISTRIBUTION enables threads by default so do it here
-IUSE="arb benchmarks boost debug doc ecm +flint llvm +mpc +mpfr openmp test tcmalloc +threads"
-RESTRICT="!test? ( test )"
-
-RDEPEND="
-	dev-libs/gmp:=
-	sys-libs/binutils-libs:=
-	arb? ( sci-mathematics/arb:= )
-	boost? ( dev-libs/boost:= )
-	ecm? ( sci-mathematics/gmp-ecm )
-	flint? ( sci-mathematics/flint:= )
-	mpc? ( dev-libs/mpc:= )
-	mpfr? ( dev-libs/mpfr:= )
-	llvm? ( <llvm-core/llvm-$((${LLVM_MAX_SLOT} + 1)):= )
-	tcmalloc? ( dev-util/google-perftools )
-"
-DEPEND="
-	${RDEPEND}
-	dev-libs/cereal
-"
-BDEPEND="doc? ( app-text/doxygen[dot] )"
-
-PATCHES=(
-	"${FILESDIR}"/${PN}-0.7.0-cmake-build-type.patch
-	"${FILESDIR}"/${PN}-0.8.1-fix_llvm.patch
-	# https://github.com/symengine/symengine/pull/1985
-	"${FILESDIR}"/${PN}-0.11.1-flint-3.patch
-)
-
-pkg_pretend() {
-	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
-}
-
-pkg_setup() {
-	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
-
-	use llvm && llvm_pkg_setup
-}
-
-src_prepare() {
-	cmake_src_prepare
-
-	sed -e "s|DESTINATION doc| DESTINATION share/doc/${PF}/html|" \
-		-e "s|/lib|/$(get_libdir)|g" \
-		-e "s|lib/|$(get_libdir)/|g" \
-		-e "/DESTINATION/s|lib|$(get_libdir)|g" \
-		-i CMakeLists.txt symengine/CMakeLists.txt \
-		symengine/utilities/teuchos/CMakeLists.txt || die
-}
-
-src_configure() {
-	# not in portage yet: piranha
-	local int_class
-
-	if use arb || use flint; then
-		int_class=flint
-	elif use mpfr; then
-		int_class=gmpxx
-	elif use boost; then
-		int_class=boostmp
-	else
-		int_class=gmp
-	fi
-
-	einfo "Building with integer class: ${int_class}"
-
-	local mycmakeargs=(
-		-DINTEGER_CLASS=${int_class}
-		-DBUILD_BENCHMARKS=$(usex benchmarks)
-		-DBUILD_DOXYGEN=$(usex doc)
-		-DBUILD_TESTS=$(usex test)
-		-DWITH_ARB=$(usex arb)
-		-DWITH_BFD=$(usex debug)
-		-DWITH_SYMENGINE_ASSERT=$(usex debug)
-		-DWITH_SYMENGINE_THREAD_SAFE=$(usex threads)
-		-DWITH_FLINT=$(usex flint)
-		-DWITH_OPENMP=$(usex openmp)
-		-DWITH_MPFR=$(usex mpfr)
-		-DWITH_MPC=$(usex mpc)
-		-DWITH_LLVM=$(usex llvm)
-		-DWITH_PTHREAD=$(usex threads)
-		-DWITH_TCMALLOC=$(usex tcmalloc)
-		-DWITH_ECM=$(usex ecm)
-		-DWITH_SYSTEM_CEREAL=ON
-	)
-
-	use arb && mycmakeargs+=( -DARB_INCLUDE_DIR="${ESYSROOT}"/usr/include )
-
-	cmake_src_configure
-}
diff --git a/sci-libs/symengine/symengine-0.12.0.ebuild b/sci-libs/symengine/symengine-0.12.0.ebuild
deleted file mode 100644
index ed537d29d76bf..0000000000000
--- a/sci-libs/symengine/symengine-0.12.0.ebuild
+++ /dev/null
@@ -1,99 +0,0 @@
-# Copyright 1999-2024 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=8
-
-LLVM_MAX_SLOT=18
-inherit cmake llvm toolchain-funcs
-
-DESCRIPTION="Fast symbolic manipulation library, written in C++"
-HOMEPAGE="https://github.com/symengine/symengine"
-SRC_URI="https://github.com/symengine/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
-
-LICENSE="MIT"
-SLOT="0/$(ver_cut 1-2)"
-KEYWORDS="amd64 ~arm arm64 ~loong ~ppc64 ~riscv ~x86 ~amd64-linux ~x86-linux"
-# BUILD_FOR_DISTRIBUTION enables threads by default so do it here
-IUSE="benchmarks boost debug doc ecm +flint llvm +mpc +mpfr openmp test tcmalloc +threads"
-RESTRICT="!test? ( test )"
-
-RDEPEND="
-	dev-libs/gmp:=
-	sys-libs/binutils-libs:=
-	boost? ( dev-libs/boost:= )
-	ecm? ( sci-mathematics/gmp-ecm )
-	flint? ( sci-mathematics/flint:= )
-	mpc? ( dev-libs/mpc:= )
-	mpfr? ( dev-libs/mpfr:= )
-	llvm? ( <llvm-core/llvm-$((${LLVM_MAX_SLOT} + 1)):= )
-	tcmalloc? ( dev-util/google-perftools )
-"
-DEPEND="
-	${RDEPEND}
-	dev-libs/cereal
-"
-BDEPEND="doc? ( app-text/doxygen[dot] )"
-
-PATCHES=(
-	"${FILESDIR}"/${PN}-0.7.0-cmake-build-type.patch
-	"${FILESDIR}"/${PN}-0.8.1-fix_llvm.patch
-)
-
-pkg_pretend() {
-	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
-}
-
-pkg_setup() {
-	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
-
-	use llvm && llvm_pkg_setup
-}
-
-src_prepare() {
-	cmake_src_prepare
-
-	sed -e "s|DESTINATION doc| DESTINATION share/doc/${PF}/html|" \
-		-e "s|/lib|/$(get_libdir)|g" \
-		-e "s|lib/|$(get_libdir)/|g" \
-		-e "/DESTINATION/s|lib|$(get_libdir)|g" \
-		-i CMakeLists.txt symengine/CMakeLists.txt \
-		symengine/utilities/teuchos/CMakeLists.txt || die
-}
-
-src_configure() {
-	# not in portage yet: piranha
-	local int_class
-
-	if use flint; then
-		int_class=flint
-	elif use mpfr; then
-		int_class=gmpxx
-	elif use boost; then
-		int_class=boostmp
-	else
-		int_class=gmp
-	fi
-
-	einfo "Building with integer class: ${int_class}"
-
-	local mycmakeargs=(
-		-DINTEGER_CLASS=${int_class}
-		-DBUILD_BENCHMARKS=$(usex benchmarks)
-		-DBUILD_DOXYGEN=$(usex doc)
-		-DBUILD_TESTS=$(usex test)
-		-DWITH_BFD=$(usex debug)
-		-DWITH_SYMENGINE_ASSERT=$(usex debug)
-		-DWITH_SYMENGINE_THREAD_SAFE=$(usex threads)
-		-DWITH_FLINT=$(usex flint)
-		-DWITH_OPENMP=$(usex openmp)
-		-DWITH_MPFR=$(usex mpfr)
-		-DWITH_MPC=$(usex mpc)
-		-DWITH_LLVM=$(usex llvm)
-		-DWITH_PTHREAD=$(usex threads)
-		-DWITH_TCMALLOC=$(usex tcmalloc)
-		-DWITH_ECM=$(usex ecm)
-		-DWITH_SYSTEM_CEREAL=ON
-	)
-
-	cmake_src_configure
-}
diff --git a/sci-libs/symengine/symengine-0.14.0.ebuild b/sci-libs/symengine/symengine-0.14.0.ebuild
deleted file mode 100644
index c7202d2be584b..0000000000000
--- a/sci-libs/symengine/symengine-0.14.0.ebuild
+++ /dev/null
@@ -1,104 +0,0 @@
-# Copyright 1999-2025 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=8
-
-LLVM_COMPAT=( {18..20} )
-LLVM_OPTIONAL=1
-
-inherit cmake llvm-r2 toolchain-funcs
-
-DESCRIPTION="Fast symbolic manipulation library, written in C++"
-HOMEPAGE="https://github.com/symengine/symengine/"
-SRC_URI="
-	https://github.com/symengine/${PN}/archive/v${PV}.tar.gz
-		-> ${P}.gh.tar.gz
-"
-
-LICENSE="MIT"
-SLOT="0/$(ver_cut 1-2)"
-KEYWORDS="amd64 ~arm arm64 ~loong ~ppc64 ~riscv ~x86"
-IUSE="
-	boost debug ecm +flint llvm +mpc +mpfr openmp primesieve tcmalloc
-	test
-"
-REQUIRED_USE="
-	boost? ( !flint !mpc !mpfr )
-	llvm? ( ${LLVM_REQUIRED_USE} )
-	mpc? ( mpfr )
-"
-RESTRICT="!test? ( test )"
-
-RDEPEND="
-	boost? ( dev-libs/boost:= )
-	!boost? ( dev-libs/gmp:= )
-	debug? ( sys-libs/binutils-libs:= )
-	ecm? ( sci-mathematics/gmp-ecm:= )
-	flint? ( sci-mathematics/flint:= )
-	mpc? ( dev-libs/mpc:= )
-	mpfr? ( dev-libs/mpfr:= )
-	llvm? ( $(llvm_gen_dep 'llvm-core/llvm:${LLVM_SLOT}=') )
-	primesieve? ( sci-mathematics/primesieve:= )
-	tcmalloc? ( dev-util/google-perftools )
-"
-DEPEND="
-	${RDEPEND}
-	dev-libs/cereal
-"
-
-pkg_pretend() {
-	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
-}
-
-pkg_setup() {
-	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
-}
-
-src_configure() {
-	local int_class
-
-	if use flint; then
-		int_class=flint
-	elif use mpfr; then
-		int_class=gmpxx
-	elif use boost; then
-		int_class=boostmp
-	else
-		int_class=gmp
-	fi
-
-	einfo "Building with integer class: ${int_class}"
-
-	local mycmakeargs=(
-		-DINSTALL_CMAKE_DIR="${EPREFIX}/usr/$(get_libdir)/cmake/symengine"
-		-DINTEGER_CLASS=${int_class}
-		# not installed
-		-DBUILD_BENCHMARKS=OFF
-		# broken with out-of-tree builds
-		-DBUILD_DOXYGEN=OFF
-		-DBUILD_TESTS=$(usex test)
-		# -DWITH_ARB provided by flint >= 2
-		-DWITH_BFD=$(usex debug)
-		-DWITH_ECM=$(usex ecm)
-		-DWITH_FLINT=$(usex flint)
-		-DWITH_LLVM=$(usex llvm)
-		-DWITH_MPC=$(usex mpc)
-		-DWITH_MPFR=$(usex mpfr)
-		-DWITH_OPENMP=$(usex openmp)
-		-DWITH_PRIMESIEVE=$(usex primesieve)
-		-DWITH_PTHREAD=ON
-		-DWITH_SYMENGINE_ASSERT=$(usex debug)
-		-DWITH_SYMENGINE_THREAD_SAFE=ON
-		-DWITH_SYSTEM_CEREAL=ON
-		# TODO: package it
-		# -DWITH_SYSTEM_FASTFLOAT=ON
-		-DWITH_TCMALLOC=$(usex tcmalloc)
-	)
-	if use llvm; then
-		mycmakeargs+=(
-			-DLLVM_ROOT="$(get_llvm_prefix -d)"
-		)
-	fi
-
-	cmake_src_configure
-}