diff --git a/dev-lang/spidermonkey/Manifest b/dev-lang/spidermonkey/Manifest
index 2660636a83906..c4edf914a3c08 100644
--- a/dev-lang/spidermonkey/Manifest
+++ b/dev-lang/spidermonkey/Manifest
@@ -4,8 +4,6 @@ DIST firefox-128.14.0esr.source.tar.xz 562714012 BLAKE2B 16420f803f5fe9cd1879d7f
 DIST firefox-128esr-patches-11.tar.xz 18696 BLAKE2B 0f35eaa29f1daf9beb09c7303b3e92676eea84337683b8f7393e8b52e36ec1f37683a050e1e8d7939ebb1bdc190acaac887bebe88812c1b64785e38980f18be3 SHA512 04bf8bbf3c4e7901a6681fec66f179f797615613be838cf35a4b03cd9a347656b1264524ac7355f0c3978a5e740ddc5dc438610e5cae6ffcad73a8988cf0e572
 DIST firefox-140.11.0esr.source.tar.xz 637083992 BLAKE2B 987913236b1d64cb0a17fa2fe1d8f1d3aa224c1cc4c7a6d0b2d912d2dcca809554de4f03de3ed958ea7b5a52d385c2d4ae0cf7e79b652ddd16d1cff73e947539 SHA512 d06adb3ef4de1324e3d61872d70de31ab08ac013f33903549bed28c6ebcc5b4dee94bb36388282c1935d77d1a564079f3adbf08d6bb80284a899cbb3d861300c
 DIST firefox-140.12.0esr.source.tar.xz 641934156 BLAKE2B c9e3b2fd860edf1e91475419a7420f9d22155cd641226c70f381650d9df2fbb450c85d8f4e1b02eaf7ca86d4ce09ce8cba5674e1afcc4810ae5dd3cb70050cbb SHA512 3d598dd964bca074d11b71f84d586811b0a736bdd4d1e6cedb9286c56b1e11584e85ca1d0369c9b2f8d9e4d0eaf014d1b9232a96e71ac25f71fa9ed0807f642d
-DIST firefox-140.9.1esr.source.tar.xz 634745800 BLAKE2B 2a8babb3060867fbc8d7a9656b514d6046ed748a2370d92d08c27d9db86c55858656d5b60ab5b016abd9b5283678c176664a34cdefbf9a90e5523e79cd662498 SHA512 119a4e4e536fd4534adcc4a546a988e553285f9326bf16e9771854ec2dc7d039a729aedc5925623e172260a5e154172c56a011f131068736eb2a89a8de611840
-DIST firefox-140esr-patches-07.tar.xz 125712 BLAKE2B df8cb80104d816966723de33c79aa56f2a0ff54bf1a8a0668b76c4bb1bf3a7fa181011850c3030c04c2b8abcd69bec2dc23d500cfb6a624704b0797b76af8062 SHA512 6735b7f00048a24f313f2a09a17c785d045b3ebc0e640c9b7932fd1e65b84284344adee73d058855aff6bf93384933323031799565838a6339b9d20684e162d4
 DIST firefox-140esr-patches-10.tar.xz 15052 BLAKE2B 1e9f1d401590958422f91d5df98dc2286b76de1cefd279ede23afa9493ec61d4a231873e000ea73bc26cc2433af7a2a6d87f94bc257a2763283b3d3d5e683462 SHA512 8276a3b37424d476f63c4669124120ab310d8a132e4fb82250fec033683456960fb83e31e12860ccb5064268bc72ebabb65b212bba161766832109dbd3d14676
 DIST firefox-140esr-patches-12.tar.xz 16200 BLAKE2B 51110f80537b2c3fd2e53e6c65c8d19b78b6ec828161da8697dfb3eb008c39e036517c78b0491f1131351967d3a775154d795bafe978850415b2f9fa5415b8a2 SHA512 a73007646116a1e50da1e2cfab623794283ba6890743c17bfefe4115ee4b1dca5a55fe1ed798a6efcad0c2ff708dd38bab0d328007b4ebd99c9c90f880920bc4
 DIST spidermonkey-115-patches-02.tar.xz 4896 BLAKE2B f78d9804c1427b45d6fda496b4991ec6f672dec9ce031ed57a2920fa1968c942a235f46e40166c8ab8d731a1963f322d34bb2f6984133179175e6f7376d27d13 SHA512 11fd01152d1e7b8ca89bf628076e1f4fb4f1ba6c9dc0f9dd544252495c580c04e4d5ffc238d5587f9e993aa91a47828333564ca55f60e008bd370089cd07d2e6
diff --git a/dev-lang/spidermonkey/spidermonkey-140.9.1.ebuild b/dev-lang/spidermonkey/spidermonkey-140.9.1.ebuild
deleted file mode 100644
index 6fbbacadcc96b..0000000000000
--- a/dev-lang/spidermonkey/spidermonkey-140.9.1.ebuild
+++ /dev/null
@@ -1,466 +0,0 @@
-# Copyright 1999-2026 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI="8"
-
-FIREFOX_PATCHSET="firefox-140esr-patches-07.tar.xz"
-SPIDERMONKEY_PATCHSET="spidermonkey-140-patches-02.tar.xz"
-
-LLVM_COMPAT=( 19 20 21 )
-RUST_NEEDS_LLVM=1
-RUST_MIN_VER=1.82.0
-
-PYTHON_COMPAT=( python3_{11..14} )
-PYTHON_REQ_USE="ncurses,ssl,xml(+)"
-
-WANT_AUTOCONF="2.1"
-
-inherit check-reqs flag-o-matic llvm-r1 multiprocessing python-any-r1 rust toolchain-funcs
-
-MY_PN="mozjs"
-MY_PV="${PV/_pre*}"
-
-MY_MAJOR=$(ver_cut 1)
-
-MOZ_ESR=yes
-
-MOZ_PV=${PV}
-MOZ_PV_SUFFIX=
-if [[ ${PV} =~ (_(alpha|beta|rc).*)$ ]] ; then
-	MOZ_PV_SUFFIX=${BASH_REMATCH[1]}
-
-	# Convert the ebuild version to the upstream Mozilla version
-	MOZ_PV="${MOZ_PV/_alpha/a}" # Handle alpha for SRC_URI
-	MOZ_PV="${MOZ_PV/_beta/b}"  # Handle beta for SRC_URI
-	MOZ_PV="${MOZ_PV%%_rc*}"    # Handle rc for SRC_URI
-fi
-
-if [[ -n ${MOZ_ESR} ]] ; then
-	# ESR releases have slightly different version numbers
-	MOZ_PV="${MOZ_PV}esr"
-fi
-
-MOZ_PN="firefox"
-MOZ_P="${MOZ_PN}-${MOZ_PV}"
-MOZ_PV_DISTFILES="${MOZ_PV}${MOZ_PV_SUFFIX}"
-MOZ_P_DISTFILES="${MOZ_PN}-${MOZ_PV_DISTFILES}"
-
-MOZ_SRC_BASE_URI="https://archive.mozilla.org/pub/${MOZ_PN}/releases/${MOZ_PV}"
-
-if [[ ${PV} == *_rc* ]] ; then
-	MOZ_SRC_BASE_URI="https://archive.mozilla.org/pub/${MOZ_PN}/candidates/${MOZ_PV}-candidates/build${PV##*_rc}"
-fi
-
-PATCH_URIS=(
-	https://dev.gentoo.org/~juippis/mozilla/patchsets/${FIREFOX_PATCHSET}
-	https://dev.gentoo.org/~juippis/mozilla/patchsets/${SPIDERMONKEY_PATCHSET}
-)
-
-DESCRIPTION="Mozilla's JavaScript engine written in C and C++"
-HOMEPAGE="https://spidermonkey.dev https://firefox-source-docs.mozilla.org/js/index.html"
-SRC_URI="${MOZ_SRC_BASE_URI}/source/${MOZ_P}.source.tar.xz -> ${MOZ_P_DISTFILES}.source.tar.xz
-	${PATCH_URIS[@]}"
-S="${WORKDIR}/firefox-${PV%_*}"
-LICENSE="MPL-2.0"
-SLOT="$(ver_cut 1)"
-KEYWORDS="~amd64 ~arm ~arm64 ~loong ~ppc ~ppc64 ~riscv ~x86"
-
-IUSE="clang cpu_flags_arm_neon debug +jit test"
-
-#RESTRICT="test"
-RESTRICT="!test? ( test )"
-
-BDEPEND="${PYTHON_DEPS}
-	$(llvm_gen_dep '
-		clang? (
-			llvm-core/clang:${LLVM_SLOT}
-			llvm-core/lld:${LLVM_SLOT}
-			llvm-core/llvm:${LLVM_SLOT}
-		)
-	')
-	>=dev-util/cbindgen-0.27.0
-	virtual/pkgconfig
-	test? (
-		$(python_gen_any_dep 'dev-python/six[${PYTHON_USEDEP}]')
-	)"
-DEPEND=">=dev-libs/icu-76.1:=
-	>=dev-libs/nspr-4.36
-	sys-libs/readline:0=
-	virtual/zlib:="
-RDEPEND="${DEPEND}"
-
-llvm_check_deps() {
-	if use clang ; then
-		if ! has_version -b "llvm-core/clang:${LLVM_SLOT}" ; then
-			einfo "llvm-core/clang:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
-			return 1
-		fi
-
-		if ! has_version -b "llvm-core/llvm:${LLVM_SLOT}" ; then
-			einfo "llvm-core/llvm:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
-			return 1
-		fi
-
-		if ! tc-ld-is-mold ; then
-			if ! has_version -b "llvm-core/lld:${LLVM_SLOT}" ; then
-				einfo "llvm-core/lld:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
-				return 1
-			fi
-		fi
-	fi
-
-	einfo "Using LLVM slot ${LLVM_SLOT} to build" >&2
-}
-
-mozconfig_add_options_ac() {
-	debug-print-function ${FUNCNAME} "$@"
-
-	if [[ ${#} -lt 2 ]] ; then
-		die "${FUNCNAME} requires at least two arguments"
-	fi
-
-	local reason=${1}
-	shift
-
-	local option
-	for option in ${@} ; do
-		echo "ac_add_options ${option} # ${reason}" >>${MOZCONFIG}
-	done
-}
-
-mozconfig_add_options_mk() {
-	debug-print-function ${FUNCNAME} "$@"
-
-	if [[ ${#} -lt 2 ]] ; then
-		die "${FUNCNAME} requires at least two arguments"
-	fi
-
-	local reason=${1}
-	shift
-
-	local option
-	for option in ${@} ; do
-		echo "mk_add_options ${option} # ${reason}" >>${MOZCONFIG}
-	done
-}
-
-mozconfig_use_enable() {
-	debug-print-function ${FUNCNAME} "$@"
-
-	if [[ ${#} -lt 1 ]] ; then
-		die "${FUNCNAME} requires at least one arguments"
-	fi
-
-	local flag=$(use_enable "${@}")
-	mozconfig_add_options_ac "$(use ${1} && echo +${1} || echo -${1})" "${flag}"
-}
-
-python_check_deps() {
-	if use test ; then
-		python_has_version "dev-python/six[${PYTHON_USEDEP}]"
-	fi
-}
-
-pkg_pretend() {
-	if use test ; then
-		CHECKREQS_DISK_BUILD="4400M"
-	else
-		CHECKREQS_DISK_BUILD="4300M"
-	fi
-
-	check-reqs_pkg_pretend
-}
-
-pkg_setup() {
-	# Get LTO from environment; export after this phase for use in src_configure (etc)
-	use_lto=no
-
-	if [[ ${MERGE_TYPE} != binary ]] ; then
-		if tc-is-lto; then
-			use_lto=yes
-			# LTO is handled via configure
-			filter-lto
-		fi
-
-		if [[ ${use_lto} = yes ]]; then
-			# -Werror=lto-type-mismatch -Werror=odr are going to fail with GCC,
-			# bmo#1516758, bgo#942288
-			filter-flags -Werror=lto-type-mismatch -Werror=odr
-		fi
-
-		if use test ; then
-			CHECKREQS_DISK_BUILD="4400M"
-		else
-			CHECKREQS_DISK_BUILD="4300M"
-		fi
-
-		check-reqs_pkg_setup
-		llvm-r1_pkg_setup
-		rust_pkg_setup
-		python-any-r1_pkg_setup
-
-		# Build system is using /proc/self/oom_score_adj, bug #604394
-		addpredict /proc/self/oom_score_adj
-
-		if ! mountpoint -q /dev/shm ; then
-			# If /dev/shm is not available, configure is known to fail with
-			# a traceback report referencing /usr/lib/pythonN.N/multiprocessing/synchronize.py
-			ewarn "/dev/shm is not mounted -- expect build failures!"
-		fi
-
-		# Ensure we use C locale when building, bug #746215
-		export LC_ALL=C
-	fi
-
-	export use_lto
-}
-
-src_prepare() {
-	if [[ ${use_lto} == "yes" ]]; then
-		rm -v "${WORKDIR}"/firefox-patches/*-LTO-Only-enable-LTO-*.patch || die
-	fi
-
-	# Workaround for bgo #915651,915651,929013 on musl
-	if use elibc_glibc ; then
-		rm -v "${WORKDIR}"/firefox-patches/*bgo-748849-RUST_TARGET_override.patch || die
-	fi
-
-	eapply "${WORKDIR}"/firefox-patches
-	eapply "${WORKDIR}"/spidermonkey-patches
-
-	default
-
-	# Make cargo respect MAKEOPTS
-	export CARGO_BUILD_JOBS="$(makeopts_jobs)"
-
-	# Workaround for bgo #915651,915651,929013 on musl
-	if ! use elibc_glibc ; then
-		if use amd64 ; then
-			export RUST_TARGET="x86_64-unknown-linux-musl"
-		elif use x86 ; then
-			export RUST_TARGET="i686-unknown-linux-musl"
-		elif use arm64 ; then
-			export RUST_TARGET="aarch64-unknown-linux-musl"
-		elif use ppc64 ; then
-			export RUST_TARGET="powerpc64le-unknown-linux-musl"
-		else
-			die "Unknown musl chost, please post your rustc -vV along with emerge --info on Gentoo's bug #915651"
-		fi
-	fi
-
-	# sed-in toolchain prefix
-	sed -i \
-		-e "s/objdump/${CHOST}-objdump/" \
-		python/mozbuild/mozbuild/configure/check_debug_ranges.py ||
-			die "sed failed to set toolchain prefix"
-
-	einfo "Removing pre-built binaries ..."
-	find third_party -type f \( -name '*.so' -o -name '*.o' \) -print -delete || die
-
-	# Create build dir
-	BUILD_DIR="${WORKDIR}/${PN}_build"
-	mkdir -p "${BUILD_DIR}" || die
-}
-
-src_configure() {
-	# Show flags set at the beginning
-	einfo "Current BINDGEN_CFLAGS:\t${BINDGEN_CFLAGS:-no value set}"
-	einfo "Current CFLAGS:    ${CFLAGS}"
-	einfo "Current CXXFLAGS:  ${CXXFLAGS}"
-	einfo "Current LDFLAGS:   ${LDFLAGS}"
-	einfo "Current RUSTFLAGS: ${RUSTFLAGS}"
-
-	local have_switched_compiler=
-	if use clang ; then
-		# Force clang
-		einfo "Enforcing the use of clang due to USE=clang ..."
-
-		local version_clang=$(clang --version 2>/dev/null | grep -F -- 'clang version' | awk '{ print $3 }')
-		[[ -n ${version_clang} ]] && version_clang=$(ver_cut 1 "${version_clang}")
-		[[ -z ${version_clang} ]] && die "Failed to read clang version!"
-
-		if tc-is-gcc; then
-			have_switched_compiler=yes
-		fi
-
-		AR=llvm-ar
-		CC=${CHOST}-clang-${version_clang}
-		CXX=${CHOST}-clang++-${version_clang}
-		NM=llvm-nm
-		RANLIB=llvm-ranlib
-		READELF=llvm-readelf
-		OBJDUMP=llvm-objdump
-
-	elif ! use clang && ! tc-is-gcc ; then
-		# Force gcc
-		have_switched_compiler=yes
-		einfo "Enforcing the use of gcc due to USE=-clang ..."
-		AR=gcc-ar
-		CC=${CHOST}-gcc
-		CXX=${CHOST}-g++
-		NM=gcc-nm
-		RANLIB=gcc-ranlib
-		READELF=readelf
-		OBJDUMP=objdump
-	fi
-
-	if [[ -n "${have_switched_compiler}" ]] ; then
-		# Because we switched active compiler we have to ensure
-		# that no unsupported flags are set
-		strip-unsupported-flags
-	fi
-
-	# Ensure we use correct toolchain,
-	# AS is used in a non-standard way by upstream, #bmo1654031
-	export HOST_CC="$(tc-getBUILD_CC)"
-	export HOST_CXX="$(tc-getBUILD_CXX)"
-	export AS="$(tc-getCC) -c"
-
-	tc-export CC CXX LD AR AS NM OBJDUMP RANLIB READELF PKG_CONFIG
-
-	# Pass the correct toolchain paths through cbindgen
-	if tc-is-cross-compiler ; then
-		export BINDGEN_CFLAGS="${SYSROOT:+--sysroot=${ESYSROOT}} --target=${CHOST} ${BINDGEN_CFLAGS-}"
-	fi
-
-	# ../python/mach/mach/mixin/process.py fails to detect SHELL
-	export SHELL="${EPREFIX}/bin/bash"
-
-	# Set state path
-	export MOZBUILD_STATE_PATH="${BUILD_DIR}"
-
-	# Set MOZCONFIG
-	export MOZCONFIG="${S}/.mozconfig"
-
-	# Initialize MOZCONFIG
-	mozconfig_add_options_ac '' --enable-project=js
-
-	mozconfig_add_options_ac 'Gentoo default' \
-		--host="${CBUILD:-${CHOST}}" \
-		--target="${CHOST}" \
-		--disable-ctype \
-		--disable-jemalloc \
-		--disable-smoosh \
-		--disable-strip \
-		--enable-packed-relative-relocs \
-		--enable-readline \
-		--enable-release \
-		--enable-shared-js \
-		--libdir="${EPREFIX}/usr/$(get_libdir)" \
-		--prefix="${EPREFIX}/usr" \
-		--with-intl-api \
-		--with-system-icu \
-		--with-system-nspr \
-		--with-system-zlib \
-		--with-toolchain-prefix="${CHOST}-"
-
-	mozconfig_use_enable debug
-	mozconfig_use_enable jit
-	mozconfig_use_enable test tests
-
-	if use debug ; then
-		mozconfig_add_options_ac '+debug' --disable-optimize
-		mozconfig_add_options_ac '+debug' --enable-debug-symbols
-		mozconfig_add_options_ac '+debug' --enable-real-time-tracing
-	else
-		mozconfig_add_options_ac '-debug' --enable-optimize
-		mozconfig_add_options_ac '-debug' --disable-debug-symbols
-		mozconfig_add_options_ac '-debug' --disable-real-time-tracing
-	fi
-
-	# We always end up disabling this at some point due to newer rust versions. bgo#933372
-	mozconfig_add_options_ac '--disable-rust-simd' --disable-rust-simd
-
-	# Modifications to better support ARM, bug 717344
-	if use cpu_flags_arm_neon ; then
-		mozconfig_add_options_ac '+cpu_flags_arm_neon' --with-fpu=neon
-
-		if ! tc-is-clang ; then
-			# thumb options aren't supported when using clang, bug 666966
-			mozconfig_add_options_ac '+cpu_flags_arm_neon' --with-thumb=yes
-			mozconfig_add_options_ac '+cpu_flags_arm_neon' --with-thumb-interwork=no
-		fi
-	fi
-
-	# Tell build system that we want to use LTO
-	if [[ ${use_lto} == "yes" ]] ; then
-		if use clang ; then
-			if tc-ld-is-mold ; then
-				mozconfig_add_options_ac '+lto' --enable-linker=mold
-			else
-				mozconfig_add_options_ac '+lto' --enable-linker=lld
-			fi
-			mozconfig_add_options_ac '+lto' --enable-lto=cross
-
-		else
-			mozconfig_add_options_ac '+lto' --enable-linker=bfd
-			mozconfig_add_options_ac '+lto' --enable-lto=full
-		fi
-	fi
-
-	# LTO flag was handled via configure
-	filter-lto
-
-	# Pass MAKEOPTS to build system
-	export MOZ_MAKE_FLAGS="${MAKEOPTS}"
-
-	# Use system's Python environment
-	export MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE="none"
-	export PIP_NETWORK_INSTALL_RESTRICTED_VIRTUALENVS=mach
-
-	# Disable notification when build system has finished
-	export MOZ_NOSPAM=1
-
-	# Portage sets XARGS environment variable to "xargs -r" by default which
-	# breaks build system's check_prog() function which doesn't support arguments
-	mozconfig_add_options_ac 'Gentoo default' "XARGS=${EPREFIX}/usr/bin/xargs"
-
-	# Set build dir
-	mozconfig_add_options_mk 'Gentoo default' "MOZ_OBJDIR=${BUILD_DIR}"
-
-	# Show flags we will use
-	einfo "Build BINDGEN_CFLAGS:\t${BINDGEN_CFLAGS:-no value set}"
-	einfo "Build CFLAGS:    ${CFLAGS}"
-	einfo "Build CXXFLAGS:  ${CXXFLAGS}"
-	einfo "Build LDFLAGS:   ${LDFLAGS}"
-	einfo "Build RUSTFLAGS: ${RUSTFLAGS}"
-
-	./mach configure || die
-}
-
-src_compile() {
-	./mach build --verbose || die
-}
-
-src_test() {
-	if "${BUILD_DIR}/js/src/js" -e 'print("Hello world!")'; then
-		einfo "Smoke-test successful, continuing with full test suite"
-	else
-		die "Smoke-test failed: did interpreter initialization fail?"
-	fi
-
-	cp "${FILESDIR}"/spidermonkey-${SLOT}-known-test-failures.txt "${T}"/known_test_failures.list || die
-	./mach jstests --exclude-file="${T}"/known_test_failures.list || die
-}
-
-src_install() {
-	cd "${BUILD_DIR}" || die
-	default
-
-	# fix soname links
-	pushd "${ED}"/usr/$(get_libdir) &>/dev/null || die
-	mv lib${MY_PN}-${MY_MAJOR}.so lib${MY_PN}-${MY_MAJOR}.so.0.0.0 || die
-	ln -s lib${MY_PN}-${MY_MAJOR}.so.0.0.0 lib${MY_PN}-${MY_MAJOR}.so.0 || die
-	ln -s lib${MY_PN}-${MY_MAJOR}.so.0 lib${MY_PN}-${MY_MAJOR}.so || die
-	popd &>/dev/null || die
-
-	# remove unneeded files
-	rm \
-		"${ED}"/usr/bin/js${MY_MAJOR}-config \
-		"${ED}"/usr/$(get_libdir)/libjs_static.ajs || die
-
-	# fix permissions
-	chmod -x \
-		"${ED}"/usr/$(get_libdir)/pkgconfig/*.pc \
-		"${ED}"/usr/include/mozjs-${MY_MAJOR}/js-config.h || die
-}