diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/Manifest b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/Manifest
index af1849aaaf..00ff3f3c13 100644
--- a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/Manifest
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/Manifest
@@ -5,5 +5,8 @@ DIST protobuf-23.3.tar.gz 5043803 BLAKE2B ee2edee230969555c9ef95069c7b1d6c23c3d1
 DIST protobuf-23.4.tar.gz 5043507 BLAKE2B bf6a50771eb977ef92b779a32fd909693faae6394254c73e3c9b2729bce643f8cbfb5a1bd18b30abf3003b9fbfd24c074cea4085a6ccf14fdb6a3aeac9efcb89 SHA512 b93a4e0339ecbe085796de5b6c61feae35229d40db9019c043090bcaa483a1cce78a99487c5638482c68832fcede5579a0e5ec731221a88359b80db9bb6dc566
 DIST protobuf-24.4.tar.gz 5180235 BLAKE2B 1c7e9035d9f3810886baaea7d679414c882463c79828c99dd8895a9549638c1ca17f9ab3b38d461019f3e1412d9cb9584b995b1da99866eb6fdbb8bdeb063e6f SHA512 52b6ab5587d03cbd1f35cf3cdc388e1710fa50f3031559ac53cf754965407ded7602cdead56080444ab695588112cc3391a1d7fdd5e565d90d0af7ad08706315
 DIST protobuf-25.3.tar.gz 5878962 BLAKE2B 9268f9bd993a1cfd6d3937a2ad56ba4cfe3d84923756513841cbf13039d4a07acb260468745cb1294f30334cb34b45c6fde272f5c40d9de63ac6a4ce5c263077 SHA512 1f73e237c919082e5423ae9e2ea8813dccf672c059051d1531fe89ffaa45872d3cf3052b8c3af26f674296ec17d7dc861c67b8f0834ed80261ce4a6a14ed7115
+DIST protobuf-25.4.tar.gz 5878444 BLAKE2B 9b40985bda31a84dd3ab7a1d18f746d5f88660d9e036a20234cbc85e79322005d2ffd4e60d72c55a8b5f624d7cc50522771f0804f203f2eabca7b0b8ace0545e SHA512 1b3ba1a1575bcc9d52ddce93d466912863d600dfbb40f64845b8e66c8000047d05508b8f1baba8d5eef42a7ff90eb778f7c8a553c9ec2778fd3a9a18122c67ab
 DIST protobuf-26.1.tar.gz 5957903 BLAKE2B 1a7faab2f56aa0995801a80f73a812c7fc38a00af0bf25bdd5eecf7aec27a86a575ea2fb8484787d19c9ac6e46007c9864e79464f529c446f31af732981feed1 SHA512 0363ac09f92d8e040491425d444c8dca0b9b430e02d2dff6e2b28a0c2b2bea0d33a47f50bc9e2e2d4e8e22b65a02009a20c0066fb89c75df93a7b703dda42ed4
 DIST protobuf-27.2.tar.gz 6282174 BLAKE2B 86d12e9f87e8e1c2961ad517115c8689a8dd984722513816d8d626e59a76f5e7a698a90cbf6007daacf66c6053c9ff28108ff113579a442ce61cd221178bda44 SHA512 664c66b62cf1ed0c65d9b910d8e67d4d5d471113697f1b8edf1573cd5c0fc8e850ac53ce984e48e6c6b9cbbefa12f8530058384e7388e65a59c1e46d03772397
+DIST protobuf-27.4.tar.gz 9156456 BLAKE2B 004427f4923e523bf77298600bf91a8fe4ca8be4bd6da5b7efcfe9186a032155e525426f83f683e1bed1e799ed1e62d250053386c1463cbd0c062bd05da786d0 SHA512 d076ce7e075096d0dba7ee2314b12e3223c4239c019e25670636a0ef812ddf0ce3f1fd9b9fe8517319db87b14bbdb2653cc4e06023f90032dfedb014457b2863
+DIST protobuf-28.0.tar.gz 9259114 BLAKE2B 328e09ebffb296d838557ea72a4fc4da8e0ad5f1edfccebcc8ee7c9e0e74d06e5e6dbad741fd89f6a4502c1cb246a973fd60c035ccdbf89700b7baff49e2a65e SHA512 8745f625ac781f3bbefe9494cbf570143d38aecc1521edef7a52ffb403b8be24df2c71f4f2410b5a5b78a0f3e8a38a7d19be2cf916b1b9125349d2da18262cd1
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/files/FindJsonCpp.cmake b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/files/FindJsonCpp.cmake
new file mode 100644
index 0000000000..8fff5336ce
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/files/FindJsonCpp.cmake
@@ -0,0 +1,40 @@
+find_path(JsonCpp_INCLUDE_DIR "json/json.h"
+  PATH_SUFFIXES "jsoncpp"
+  DOC "jsoncpp include directory")
+mark_as_advanced(JsonCpp_INCLUDE_DIR)
+
+find_library(JsonCpp_LIBRARY
+  NAMES jsoncpp
+  DOC "jsoncpp library")
+mark_as_advanced(JsonCpp_LIBRARY)
+
+if (JsonCpp_INCLUDE_DIR AND EXISTS "${JsonCpp_INCLUDE_DIR}/json/version.h")
+  file(STRINGS "${JsonCpp_INCLUDE_DIR}/json/version.h" _JsonCpp_version_lines
+    REGEX "JSONCPP_VERSION_[A-Z]+")
+  string(REGEX REPLACE ".*# *define +JSONCPP_VERSION_MAJOR +([0-9]+).*" "\\1" _JsonCpp_version_major "${_JsonCpp_version_lines}")
+  string(REGEX REPLACE ".*# *define +JSONCPP_VERSION_MINOR +([0-9]+).*" "\\1" _JsonCpp_version_minor "${_JsonCpp_version_lines}")
+  string(REGEX REPLACE ".*# *define +JSONCPP_VERSION_PATCH +([0-9]+).*" "\\1" _JsonCpp_version_patch "${_JsonCpp_version_lines}")
+  set(JsonCpp_VERSION "${_JsonCpp_version_major}.${_JsonCpp_version_minor}.${_JsonCpp_version_patch}")
+  unset(_JsonCpp_version_major)
+  unset(_JsonCpp_version_minor)
+  unset(_JsonCpp_version_patch)
+  unset(_JsonCpp_version_lines)
+endif ()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(JsonCpp
+  REQUIRED_VARS JsonCpp_LIBRARY JsonCpp_INCLUDE_DIR
+  VERSION_VAR JsonCpp_VERSION)
+
+if (JsonCpp_FOUND)
+  set(JsonCpp_INCLUDE_DIRS "${JsonCpp_INCLUDE_DIR}")
+  set(JsonCpp_LIBRARIES "${JsonCpp_LIBRARY}")
+
+  if (NOT TARGET JsonCpp::JsonCpp)
+    add_library(JsonCpp::JsonCpp SHARED IMPORTED)
+    set_target_properties(JsonCpp::JsonCpp PROPERTIES
+      IMPORTED_LOCATION "${JsonCpp_LIBRARY}"
+      IMPORTED_IMPLIB "${JsonCpp_LIBRARY}"
+      INTERFACE_INCLUDE_DIRECTORIES "${JsonCpp_INCLUDE_DIR}")
+  endif ()
+endif ()
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/files/protobuf-27.4-findJsonCpp.patch b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/files/protobuf-27.4-findJsonCpp.patch
new file mode 100644
index 0000000000..6ce98f758e
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/files/protobuf-27.4-findJsonCpp.patch
@@ -0,0 +1,33 @@
+From e3138533bf97e1133371944b28e65bae5e8ae95c Mon Sep 17 00:00:00 2001
+From: Paul Zander <negril.nx+gentoo@gmail.com>
+Date: Sat, 10 Aug 2024 13:43:28 +0200
+Subject: [PATCH] fix JsonCPP name
+
+Signed-off-by: Paul Zander <negril.nx+gentoo@gmail.com>
+---
+ cmake/conformance.cmake | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/cmake/conformance.cmake b/cmake/conformance.cmake
+index c5d8c7c..2e059ea 100644
+--- a/cmake/conformance.cmake
++++ b/cmake/conformance.cmake
+@@ -9,7 +9,7 @@ if (protobuf_JSONCPP_PROVIDER STREQUAL "module")
+             "  cmake -Dprotobuf_BUILD_CONFORMANCE=OFF\n")
+   endif()
+ elseif(protobuf_JSONCPP_PROVIDER STREQUAL "package")
+-  find_package(jsoncpp REQUIRED)
++  find_package(JsonCpp REQUIRED)
+ endif()
+ 
+ file(MAKE_DIRECTORY ${protobuf_BINARY_DIR}/conformance)
+@@ -140,5 +140,5 @@ if(protobuf_JSONCPP_PROVIDER STREQUAL "module")
+     target_link_libraries(conformance_test_runner jsoncpp_static)
+   endif()
+ else()
+-  target_link_libraries(conformance_test_runner jsoncpp)
++  target_link_libraries(conformance_test_runner JsonCpp::JsonCpp)
+ endif()
+-- 
+2.46.0
+
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/files/protobuf-28.0-disable-test_upb-lto.patch b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/files/protobuf-28.0-disable-test_upb-lto.patch
new file mode 100644
index 0000000000..0a9ed5e8e6
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/files/protobuf-28.0-disable-test_upb-lto.patch
@@ -0,0 +1,23 @@
+From 14fe043db8162df9ddc2308437cace6434c67bd9 Mon Sep 17 00:00:00 2001
+From: Paul Zander <negril.nx+gentoo@gmail.com>
+Date: Fri, 30 Aug 2024 03:22:16 +0200
+Subject: [PATCH] disable test_upb
+
+Signed-off-by: Paul Zander <negril.nx+gentoo@gmail.com>
+
+diff --git a/cmake/tests.cmake b/cmake/tests.cmake
+index c8ae114..eac821c 100644
+--- a/cmake/tests.cmake
++++ b/cmake/tests.cmake
+@@ -175,7 +175,7 @@ add_test(NAME full-test
+   COMMAND tests ${protobuf_GTEST_ARGS}
+   WORKING_DIRECTORY ${protobuf_SOURCE_DIR})
+ 
+-if (protobuf_BUILD_LIBUPB)
++if (protobuf_BUILD_LIBUPB AND FALSE)
+   set(upb_test_proto_genfiles)
+   foreach(proto_file ${upb_test_protos_files} ${descriptor_proto_proto_srcs})
+     foreach(generator upb upbdefs upb_minitable)
+-- 
+2.46.0
+
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-21.9.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-21.9.ebuild
index 68b9207ab7..46fb355327 100644
--- a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-21.9.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-21.9.ebuild
@@ -12,7 +12,7 @@ if [[ "${PV}" == *9999 ]]; then
 	EGIT_SUBMODULES=()
 else
 	SRC_URI="https://github.com/protocolbuffers/protobuf/archive/v${PV}.tar.gz -> ${P}.tar.gz"
-	KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~loong ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~amd64-linux ~x86-linux ~x64-macos"
+	KEYWORDS="~alpha amd64 arm arm64 hppa ~loong ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~amd64-linux ~x86-linux ~x64-macos"
 fi
 
 DESCRIPTION="Google's Protocol Buffers - Extensible mechanism for serializing structured data"
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-22.5-r1.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-22.5-r1.ebuild
index ff2783d5e7..ca830b5f58 100644
--- a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-22.5-r1.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-22.5-r1.ebuild
@@ -12,7 +12,7 @@ if [[ "${PV}" == *9999 ]]; then
 	EGIT_SUBMODULES=()
 else
 	SRC_URI="https://github.com/protocolbuffers/protobuf/archive/v${PV}.tar.gz -> ${P}.tar.gz"
-	KEYWORDS="~alpha amd64 ~arm ~arm64 ~loong ~mips ppc64 ~riscv ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos"
+	KEYWORDS="~alpha amd64 ~arm ~arm64 ~loong ppc64 ~riscv ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos"
 fi
 
 DESCRIPTION="Google's Protocol Buffers - Extensible mechanism for serializing structured data"
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-23.3-r4.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-23.3-r4.ebuild
index 17092c5a48..6a47828975 100644
--- a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-23.3-r4.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-23.3-r4.ebuild
@@ -12,7 +12,7 @@ if [[ "${PV}" == *9999 ]]; then
 	EGIT_SUBMODULES=()
 else
 	SRC_URI="https://github.com/protocolbuffers/protobuf/archive/v${PV}.tar.gz -> ${P}.tar.gz"
-	KEYWORDS="~alpha amd64 ~arm ~arm64 ~loong ~mips ~ppc64 ~riscv ~sparc x86 ~amd64-linux ~x86-linux ~x64-macos"
+	KEYWORDS="~alpha amd64 ~arm ~arm64 ~loong ~ppc64 ~riscv ~sparc x86 ~amd64-linux ~x86-linux ~x64-macos"
 fi
 
 DESCRIPTION="Google's Protocol Buffers - Extensible mechanism for serializing structured data"
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-25.3.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-25.3.ebuild
index 422310009a..d878a5ea4e 100644
--- a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-25.3.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-25.3.ebuild
@@ -17,7 +17,7 @@ if [[ "${PV}" == *9999 ]]; then
 	inherit git-r3
 else
 	SRC_URI="https://github.com/protocolbuffers/protobuf/archive/v${PV}.tar.gz -> ${P}.tar.gz"
-	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~loong ~mips ~ppc64 ~riscv ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos"
+	KEYWORDS="~alpha amd64 ~arm ~arm64 ~loong ~mips ~ppc64 ~riscv ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos"
 fi
 
 DESCRIPTION="Google's Protocol Buffers - Extensible mechanism for serializing structured data"
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-25.4.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-25.4.ebuild
new file mode 100644
index 0000000000..158b36af63
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-25.4.ebuild
@@ -0,0 +1,165 @@
+# Copyright 2008-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake-multilib elisp-common multilib
+
+# NOTE from https://github.com/protocolbuffers/protobuf/blob/main/.gitmodules
+ABSEIL_BRANCH="lts_2023_08_02"
+
+ABSEIL_MIN_VER="${ABSEIL_BRANCH//lts_}"
+ABSEIL_MIN_VER="${ABSEIL_MIN_VER//_/}"
+
+if [[ "${PV}" == *9999 ]]; then
+	EGIT_REPO_URI="https://github.com/protocolbuffers/protobuf.git"
+	EGIT_SUBMODULES=( '-*' )
+	MY_SLOT="28.0"
+
+	inherit git-r3
+else
+	SRC_URI="https://github.com/protocolbuffers/protobuf/releases/download/v${PV}/${P}.tar.gz"
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~loong ~mips ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~x64-macos"
+	MY_SLOT=$(ver_cut 1-2)
+fi
+
+DESCRIPTION="Google's Protocol Buffers - Extensible mechanism for serializing structured data"
+HOMEPAGE="https://protobuf.dev/"
+
+LICENSE="BSD"
+SLOT="0/${MY_SLOT}.0"
+IUSE="conformance debug emacs examples +libprotoc libupb +protobuf +protoc test zlib"
+
+REQUIRED_USE="
+	|| (
+		libprotoc
+		libupb
+		protobuf
+		protoc
+	)
+"
+
+RESTRICT="!test? ( test )"
+
+BDEPEND="
+	emacs? ( app-editors/emacs:* )
+	!protobuf? (
+		>=dev-libs/protobuf-${PV}
+	)
+"
+
+COMMON_DEPEND="
+	dev-libs/jsoncpp[${MULTILIB_USEDEP}]
+	>=dev-cpp/abseil-cpp-${ABSEIL_MIN_VER}:=[${MULTILIB_USEDEP}]
+	zlib? ( sys-libs/zlib[${MULTILIB_USEDEP}] )
+"
+
+DEPEND="
+	${COMMON_DEPEND}
+	test? ( >=dev-cpp/gtest-1.9[${MULTILIB_USEDEP}] )
+"
+RDEPEND="
+	${COMMON_DEPEND}
+	${BDEPEND}
+"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-26.1-disable-32-bit-tests.patch"
+	"${FILESDIR}/${PN}-23.3-static_assert-failure.patch"
+	"${FILESDIR}/${PN}-27.4-findJsonCpp.patch"
+)
+
+DOCS=( CONTRIBUTORS.txt README.md )
+
+src_prepare() {
+	cmake_src_prepare
+
+	cp "${FILESDIR}/FindJsonCpp.cmake" "${S}/cmake" || die
+}
+
+multilib_src_configure() {
+	local mycmakeargs=(
+		-Dprotobuf_ABSL_PROVIDER="package"
+		-Dprotobuf_JSONCPP_PROVIDER="package"
+
+		-Dprotobuf_BUILD_CONFORMANCE="$(usex test "$(usex conformance)")"
+		-Dprotobuf_BUILD_EXAMPLES="$(usex examples)"
+		-Dprotobuf_BUILD_LIBPROTOC="$(usex libprotoc)"
+		-Dprotobuf_BUILD_LIBUPB="$(usex libupb)"
+		-Dprotobuf_BUILD_PROTOBUF_BINARIES="$(usex protobuf)"
+		-Dprotobuf_BUILD_PROTOC_BINARIES="$(usex protoc)"
+		-Dprotobuf_BUILD_SHARED_LIBS="yes"
+		-Dprotobuf_BUILD_TESTS="$(usex test)"
+
+		-Dprotobuf_DISABLE_RTTI="no"
+
+		-Dprotobuf_INSTALL="yes"
+		-Dprotobuf_INSTALL_EXAMPLES="$(usex examples)"
+		-Dprotobuf_TEST_XML_OUTDIR="$(usex test)"
+
+		-Dprotobuf_WITH_ZLIB="$(usex zlib)"
+		-Dprotobuf_VERBOSE="$(usex debug)"
+		-DCMAKE_MODULE_PATH="${S}/cmake"
+	)
+	use test && mycmakeargs+=( -Dprotobuf_USE_EXTERNAL_GTEST="yes" )
+
+	cmake_src_configure
+}
+
+src_compile() {
+	cmake-multilib_src_compile
+
+	if use emacs; then
+		elisp-compile editors/protobuf-mode.el
+	fi
+}
+
+src_test() {
+	local -x srcdir="${S}/src"
+
+	local -x TEST_TMPDIR="${T%/}/TEST_TMPDIR_${ABI}"
+	mkdir -m 777 "${TEST_TMPDIR}" || die
+
+	setup_test_env() {
+		ln -sr "${S}/src" "${BUILD_DIR}/include" || die
+	}
+
+	multilib_foreach_abi setup_test_env
+
+	cmake-multilib_src_test
+}
+
+multilib_src_install_all() {
+	find "${ED}" -name "*.la" -delete || die
+
+	if [[ ! -f "${ED}/usr/$(get_libdir)/libprotobuf$(get_libname ${SLOT#*/})" ]]; then
+		eerror "No matching library found with SLOT variable, currently set: ${SLOT}\n" \
+			"Expected value: ${ED}/usr/$(get_libdir)/libprotobuf$(get_libname ${SLOT#*/})"
+		die "Please update SLOT variable"
+	fi
+
+	insinto /usr/share/vim/vimfiles/syntax
+	doins editors/proto.vim
+	insinto /usr/share/vim/vimfiles/ftdetect
+	doins "${FILESDIR}/proto.vim"
+
+	if use emacs; then
+		elisp-install "${PN}" editors/protobuf-mode.el*
+		elisp-site-file-install "${FILESDIR}/70${PN}-gentoo.el"
+	fi
+
+	if use examples; then
+		DOCS+=(examples)
+		docompress -x "/usr/share/doc/${PF}/examples"
+	fi
+
+	einstalldocs
+}
+
+pkg_postinst() {
+	use emacs && elisp-site-regen
+}
+
+pkg_postrm() {
+	use emacs && elisp-site-regen
+}
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-26.1-r1.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-26.1-r1.ebuild
deleted file mode 100644
index 534834edca..0000000000
--- a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-26.1-r1.ebuild
+++ /dev/null
@@ -1,113 +0,0 @@
-# Copyright 2008-2024 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=8
-
-inherit cmake-multilib elisp-common toolchain-funcs
-
-if [[ "${PV}" == *9999 ]]; then
-	inherit git-r3
-
-	EGIT_REPO_URI="https://github.com/protocolbuffers/protobuf.git"
-	EGIT_SUBMODULES=()
-else
-	SRC_URI="https://github.com/protocolbuffers/protobuf/archive/v${PV}.tar.gz -> ${P}.tar.gz"
-	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~loong ~mips ~ppc64 ~riscv ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos"
-fi
-
-DESCRIPTION="Google's Protocol Buffers - Extensible mechanism for serializing structured data"
-HOMEPAGE="https://protobuf.dev/"
-
-LICENSE="BSD"
-SLOT="0/$(ver_cut 1-2).0"
-IUSE="emacs examples test zlib"
-RESTRICT="!test? ( test )"
-
-BDEPEND="emacs? ( app-editors/emacs:* )"
-DEPEND="
-	>=dev-cpp/abseil-cpp-20230125.3:=[${MULTILIB_USEDEP}]
-	zlib? ( sys-libs/zlib[${MULTILIB_USEDEP}] )
-	test? ( >=dev-cpp/gtest-1.9[${MULTILIB_USEDEP}] )
-"
-RDEPEND="
-	>=dev-cpp/abseil-cpp-20230125.3:=[${MULTILIB_USEDEP}]
-	emacs? ( app-editors/emacs:* )
-	zlib? ( sys-libs/zlib[${MULTILIB_USEDEP}] )
-"
-
-PATCHES=(
-	"${FILESDIR}/${P}-disable-32-bit-tests.patch"
-	"${FILESDIR}/${PN}-23.3-static_assert-failure.patch"
-)
-
-DOCS=( CONTRIBUTORS.txt README.md )
-
-src_configure() {
-	if tc-ld-is-gold; then
-		# https://sourceware.org/bugzilla/show_bug.cgi?id=24527
-		tc-ld-disable-gold
-	fi
-
-	cmake-multilib_src_configure
-}
-
-multilib_src_configure() {
-	local mycmakeargs=(
-		-Dprotobuf_DISABLE_RTTI=ON
-		-Dprotobuf_BUILD_EXAMPLES=$(usex examples)
-		-Dprotobuf_WITH_ZLIB=$(usex zlib)
-		-Dprotobuf_BUILD_TESTS=$(usex test)
-		-Dprotobuf_ABSL_PROVIDER=package
-	)
-	use test && mycmakeargs+=(-Dprotobuf_USE_EXTERNAL_GTEST=ON)
-
-	cmake_src_configure
-}
-
-src_compile() {
-	cmake-multilib_src_compile
-
-	if use emacs; then
-		elisp-compile editors/protobuf-mode.el
-	fi
-}
-
-src_test() {
-	local -x srcdir="${S}"/src
-	cmake-multilib_src_test
-}
-
-multilib_src_install_all() {
-	find "${ED}" -name "*.la" -delete || die
-
-	if [[ ! -f "${ED}/usr/$(get_libdir)/libprotobuf.so.${SLOT#*/}" ]]; then
-		eerror "No matching library found with SLOT variable, currently set: ${SLOT}\n" \
-			"Expected value: ${ED}/usr/$(get_libdir)/libprotobuf.so.${SLOT#*/}"
-		die "Please update SLOT variable"
-	fi
-
-	insinto /usr/share/vim/vimfiles/syntax
-	doins editors/proto.vim
-	insinto /usr/share/vim/vimfiles/ftdetect
-	doins "${FILESDIR}/proto.vim"
-
-	if use emacs; then
-		elisp-install ${PN} editors/protobuf-mode.el*
-		elisp-site-file-install "${FILESDIR}/70${PN}-gentoo.el"
-	fi
-
-	if use examples; then
-		DOCS+=(examples)
-		docompress -x /usr/share/doc/${PF}/examples
-	fi
-
-	einstalldocs
-}
-
-pkg_postinst() {
-	use emacs && elisp-site-regen
-}
-
-pkg_postrm() {
-	use emacs && elisp-site-regen
-}
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-27.2.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-27.2.ebuild
index 1e406912d8..5fab101605 100644
--- a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-27.2.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-27.2.ebuild
@@ -18,7 +18,7 @@ if [[ "${PV}" == *9999 ]]; then
 	inherit git-r3
 else
 	SRC_URI="https://github.com/protocolbuffers/protobuf/archive/v${PV}.tar.gz -> ${P}.tar.gz"
-	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~loong ~mips ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~x64-macos"
+	KEYWORDS="~alpha amd64 ~arm arm64 ~loong ~mips ppc64 ~riscv ~s390 ~sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~x64-macos"
 	MY_SLOT=$(ver_cut 1-2)
 fi
 
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-27.4.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-27.4.ebuild
new file mode 100644
index 0000000000..30ab416efd
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-27.4.ebuild
@@ -0,0 +1,166 @@
+# Copyright 2008-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake-multilib elisp-common multilib
+
+# NOTE from https://github.com/protocolbuffers/protobuf/blob/main/.gitmodules
+ABSEIL_BRANCH="lts_2023_08_02"
+
+ABSEIL_MIN_VER="${ABSEIL_BRANCH//lts_}"
+ABSEIL_MIN_VER="${ABSEIL_MIN_VER//_/}"
+
+if [[ "${PV}" == *9999 ]]; then
+	EGIT_REPO_URI="https://github.com/protocolbuffers/protobuf.git"
+	EGIT_SUBMODULES=( '-*' )
+	MY_SLOT="28.0"
+
+	inherit git-r3
+else
+	SRC_URI="https://github.com/protocolbuffers/protobuf/releases/download/v${PV}/${P}.tar.gz"
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~loong ~mips ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~x64-macos"
+	MY_SLOT=$(ver_cut 1-2)
+fi
+
+DESCRIPTION="Google's Protocol Buffers - Extensible mechanism for serializing structured data"
+HOMEPAGE="https://protobuf.dev/"
+
+LICENSE="BSD"
+SLOT="0/${MY_SLOT}.0"
+IUSE="conformance debug emacs examples +libprotoc libupb +protobuf +protoc test zlib"
+
+REQUIRED_USE="
+	|| (
+		libprotoc
+		libupb
+		protobuf
+		protoc
+	)
+"
+
+RESTRICT="!test? ( test )"
+
+BDEPEND="
+	emacs? ( app-editors/emacs:* )
+	!protobuf? (
+		>=dev-libs/protobuf-${PV}
+	)
+"
+
+COMMON_DEPEND="
+	dev-libs/jsoncpp[${MULTILIB_USEDEP}]
+	>=dev-cpp/abseil-cpp-${ABSEIL_MIN_VER}:=[${MULTILIB_USEDEP}]
+	zlib? ( sys-libs/zlib[${MULTILIB_USEDEP}] )
+"
+
+DEPEND="
+	${COMMON_DEPEND}
+	test? ( >=dev-cpp/gtest-1.11[${MULTILIB_USEDEP}] )
+"
+RDEPEND="
+	${COMMON_DEPEND}
+	${BDEPEND}
+"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-26.1-disable-32-bit-tests.patch"
+	"${FILESDIR}/${PN}-23.3-static_assert-failure.patch"
+	"${FILESDIR}/${PN}-27.4-findJsonCpp.patch"
+	"${FILESDIR}/${PN}-28.0-disable-test_upb-lto.patch"
+)
+
+DOCS=( CONTRIBUTORS.txt README.md )
+
+src_prepare() {
+	cmake_src_prepare
+
+	cp "${FILESDIR}/FindJsonCpp.cmake" "${S}/cmake" || die
+}
+
+multilib_src_configure() {
+	local mycmakeargs=(
+		-Dprotobuf_ABSL_PROVIDER="package"
+		-Dprotobuf_JSONCPP_PROVIDER="package"
+
+		-Dprotobuf_BUILD_CONFORMANCE="$(usex test "$(usex conformance)")"
+		-Dprotobuf_BUILD_EXAMPLES="$(usex examples)"
+		-Dprotobuf_BUILD_LIBPROTOC="$(usex libprotoc)"
+		-Dprotobuf_BUILD_LIBUPB="$(usex libupb)"
+		-Dprotobuf_BUILD_PROTOBUF_BINARIES="$(usex protobuf)"
+		-Dprotobuf_BUILD_PROTOC_BINARIES="$(usex protoc)"
+		-Dprotobuf_BUILD_SHARED_LIBS="yes"
+		-Dprotobuf_BUILD_TESTS="$(usex test)"
+
+		-Dprotobuf_DISABLE_RTTI="no"
+
+		-Dprotobuf_INSTALL="yes"
+		-Dprotobuf_INSTALL_EXAMPLES="$(usex examples)"
+		-Dprotobuf_TEST_XML_OUTDIR="$(usex test)"
+
+		-Dprotobuf_WITH_ZLIB="$(usex zlib)"
+		-Dprotobuf_VERBOSE="$(usex debug)"
+		-DCMAKE_MODULE_PATH="${S}/cmake"
+	)
+	use test && mycmakeargs+=( -Dprotobuf_USE_EXTERNAL_GTEST="yes" )
+
+	cmake_src_configure
+}
+
+src_compile() {
+	cmake-multilib_src_compile
+
+	if use emacs; then
+		elisp-compile editors/protobuf-mode.el
+	fi
+}
+
+src_test() {
+	local -x srcdir="${S}/src"
+
+	local -x TEST_TMPDIR="${T%/}/TEST_TMPDIR_${ABI}"
+	mkdir -m 777 "${TEST_TMPDIR}" || die
+
+	setup_test_env() {
+		ln -sr "${S}/src" "${BUILD_DIR}/include" || die
+	}
+
+	multilib_foreach_abi setup_test_env
+
+	cmake-multilib_src_test
+}
+
+multilib_src_install_all() {
+	find "${ED}" -name "*.la" -delete || die
+
+	if [[ ! -f "${ED}/usr/$(get_libdir)/libprotobuf$(get_libname ${SLOT#*/})" ]]; then
+		eerror "No matching library found with SLOT variable, currently set: ${SLOT}\n" \
+			"Expected value: ${ED}/usr/$(get_libdir)/libprotobuf$(get_libname ${SLOT#*/})"
+		die "Please update SLOT variable"
+	fi
+
+	insinto /usr/share/vim/vimfiles/syntax
+	doins editors/proto.vim
+	insinto /usr/share/vim/vimfiles/ftdetect
+	doins "${FILESDIR}/proto.vim"
+
+	if use emacs; then
+		elisp-install "${PN}" editors/protobuf-mode.el*
+		elisp-site-file-install "${FILESDIR}/70${PN}-gentoo.el"
+	fi
+
+	if use examples; then
+		DOCS+=(examples)
+		docompress -x "/usr/share/doc/${PF}/examples"
+	fi
+
+	einstalldocs
+}
+
+pkg_postinst() {
+	use emacs && elisp-site-regen
+}
+
+pkg_postrm() {
+	use emacs && elisp-site-regen
+}
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-28.0.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-28.0.ebuild
new file mode 100644
index 0000000000..30ab416efd
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-28.0.ebuild
@@ -0,0 +1,166 @@
+# Copyright 2008-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake-multilib elisp-common multilib
+
+# NOTE from https://github.com/protocolbuffers/protobuf/blob/main/.gitmodules
+ABSEIL_BRANCH="lts_2023_08_02"
+
+ABSEIL_MIN_VER="${ABSEIL_BRANCH//lts_}"
+ABSEIL_MIN_VER="${ABSEIL_MIN_VER//_/}"
+
+if [[ "${PV}" == *9999 ]]; then
+	EGIT_REPO_URI="https://github.com/protocolbuffers/protobuf.git"
+	EGIT_SUBMODULES=( '-*' )
+	MY_SLOT="28.0"
+
+	inherit git-r3
+else
+	SRC_URI="https://github.com/protocolbuffers/protobuf/releases/download/v${PV}/${P}.tar.gz"
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~loong ~mips ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~x64-macos"
+	MY_SLOT=$(ver_cut 1-2)
+fi
+
+DESCRIPTION="Google's Protocol Buffers - Extensible mechanism for serializing structured data"
+HOMEPAGE="https://protobuf.dev/"
+
+LICENSE="BSD"
+SLOT="0/${MY_SLOT}.0"
+IUSE="conformance debug emacs examples +libprotoc libupb +protobuf +protoc test zlib"
+
+REQUIRED_USE="
+	|| (
+		libprotoc
+		libupb
+		protobuf
+		protoc
+	)
+"
+
+RESTRICT="!test? ( test )"
+
+BDEPEND="
+	emacs? ( app-editors/emacs:* )
+	!protobuf? (
+		>=dev-libs/protobuf-${PV}
+	)
+"
+
+COMMON_DEPEND="
+	dev-libs/jsoncpp[${MULTILIB_USEDEP}]
+	>=dev-cpp/abseil-cpp-${ABSEIL_MIN_VER}:=[${MULTILIB_USEDEP}]
+	zlib? ( sys-libs/zlib[${MULTILIB_USEDEP}] )
+"
+
+DEPEND="
+	${COMMON_DEPEND}
+	test? ( >=dev-cpp/gtest-1.11[${MULTILIB_USEDEP}] )
+"
+RDEPEND="
+	${COMMON_DEPEND}
+	${BDEPEND}
+"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-26.1-disable-32-bit-tests.patch"
+	"${FILESDIR}/${PN}-23.3-static_assert-failure.patch"
+	"${FILESDIR}/${PN}-27.4-findJsonCpp.patch"
+	"${FILESDIR}/${PN}-28.0-disable-test_upb-lto.patch"
+)
+
+DOCS=( CONTRIBUTORS.txt README.md )
+
+src_prepare() {
+	cmake_src_prepare
+
+	cp "${FILESDIR}/FindJsonCpp.cmake" "${S}/cmake" || die
+}
+
+multilib_src_configure() {
+	local mycmakeargs=(
+		-Dprotobuf_ABSL_PROVIDER="package"
+		-Dprotobuf_JSONCPP_PROVIDER="package"
+
+		-Dprotobuf_BUILD_CONFORMANCE="$(usex test "$(usex conformance)")"
+		-Dprotobuf_BUILD_EXAMPLES="$(usex examples)"
+		-Dprotobuf_BUILD_LIBPROTOC="$(usex libprotoc)"
+		-Dprotobuf_BUILD_LIBUPB="$(usex libupb)"
+		-Dprotobuf_BUILD_PROTOBUF_BINARIES="$(usex protobuf)"
+		-Dprotobuf_BUILD_PROTOC_BINARIES="$(usex protoc)"
+		-Dprotobuf_BUILD_SHARED_LIBS="yes"
+		-Dprotobuf_BUILD_TESTS="$(usex test)"
+
+		-Dprotobuf_DISABLE_RTTI="no"
+
+		-Dprotobuf_INSTALL="yes"
+		-Dprotobuf_INSTALL_EXAMPLES="$(usex examples)"
+		-Dprotobuf_TEST_XML_OUTDIR="$(usex test)"
+
+		-Dprotobuf_WITH_ZLIB="$(usex zlib)"
+		-Dprotobuf_VERBOSE="$(usex debug)"
+		-DCMAKE_MODULE_PATH="${S}/cmake"
+	)
+	use test && mycmakeargs+=( -Dprotobuf_USE_EXTERNAL_GTEST="yes" )
+
+	cmake_src_configure
+}
+
+src_compile() {
+	cmake-multilib_src_compile
+
+	if use emacs; then
+		elisp-compile editors/protobuf-mode.el
+	fi
+}
+
+src_test() {
+	local -x srcdir="${S}/src"
+
+	local -x TEST_TMPDIR="${T%/}/TEST_TMPDIR_${ABI}"
+	mkdir -m 777 "${TEST_TMPDIR}" || die
+
+	setup_test_env() {
+		ln -sr "${S}/src" "${BUILD_DIR}/include" || die
+	}
+
+	multilib_foreach_abi setup_test_env
+
+	cmake-multilib_src_test
+}
+
+multilib_src_install_all() {
+	find "${ED}" -name "*.la" -delete || die
+
+	if [[ ! -f "${ED}/usr/$(get_libdir)/libprotobuf$(get_libname ${SLOT#*/})" ]]; then
+		eerror "No matching library found with SLOT variable, currently set: ${SLOT}\n" \
+			"Expected value: ${ED}/usr/$(get_libdir)/libprotobuf$(get_libname ${SLOT#*/})"
+		die "Please update SLOT variable"
+	fi
+
+	insinto /usr/share/vim/vimfiles/syntax
+	doins editors/proto.vim
+	insinto /usr/share/vim/vimfiles/ftdetect
+	doins "${FILESDIR}/proto.vim"
+
+	if use emacs; then
+		elisp-install "${PN}" editors/protobuf-mode.el*
+		elisp-site-file-install "${FILESDIR}/70${PN}-gentoo.el"
+	fi
+
+	if use examples; then
+		DOCS+=(examples)
+		docompress -x "/usr/share/doc/${PF}/examples"
+	fi
+
+	einstalldocs
+}
+
+pkg_postinst() {
+	use emacs && elisp-site-regen
+}
+
+pkg_postrm() {
+	use emacs && elisp-site-regen
+}
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-9999.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-9999.ebuild
index 9988631acc..30ab416efd 100644
--- a/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-9999.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/protobuf/protobuf-9999.ebuild
@@ -3,9 +3,10 @@
 
 EAPI=8
 
-inherit cmake-multilib elisp-common toolchain-funcs multilib
+inherit cmake-multilib elisp-common multilib
 
-ABSEIL_BRANCH="lts_2023_08_02" # NOTE from https://github.com/protocolbuffers/protobuf/blob/main/.gitmodules
+# NOTE from https://github.com/protocolbuffers/protobuf/blob/main/.gitmodules
+ABSEIL_BRANCH="lts_2023_08_02"
 
 ABSEIL_MIN_VER="${ABSEIL_BRANCH//lts_}"
 ABSEIL_MIN_VER="${ABSEIL_MIN_VER//_/}"
@@ -17,8 +18,8 @@ if [[ "${PV}" == *9999 ]]; then
 
 	inherit git-r3
 else
-	SRC_URI="https://github.com/protocolbuffers/protobuf/archive/v${PV}.tar.gz -> ${P}.tar.gz"
-	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~loong ~mips ~ppc64 ~riscv ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos"
+	SRC_URI="https://github.com/protocolbuffers/protobuf/releases/download/v${PV}/${P}.tar.gz"
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~loong ~mips ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~x64-macos"
 	MY_SLOT=$(ver_cut 1-2)
 fi
 
@@ -27,7 +28,7 @@ HOMEPAGE="https://protobuf.dev/"
 
 LICENSE="BSD"
 SLOT="0/${MY_SLOT}.0"
-IUSE="conformance emacs examples +libprotoc libupb +protobuf +protoc test zlib"
+IUSE="conformance debug emacs examples +libprotoc libupb +protobuf +protoc test zlib"
 
 REQUIRED_USE="
 	|| (
@@ -48,14 +49,14 @@ BDEPEND="
 "
 
 COMMON_DEPEND="
-	dev-libs/jsoncpp
+	dev-libs/jsoncpp[${MULTILIB_USEDEP}]
 	>=dev-cpp/abseil-cpp-${ABSEIL_MIN_VER}:=[${MULTILIB_USEDEP}]
 	zlib? ( sys-libs/zlib[${MULTILIB_USEDEP}] )
 "
 
 DEPEND="
 	${COMMON_DEPEND}
-	test? ( >=dev-cpp/gtest-1.9[${MULTILIB_USEDEP}] )
+	test? ( >=dev-cpp/gtest-1.11[${MULTILIB_USEDEP}] )
 "
 RDEPEND="
 	${COMMON_DEPEND}
@@ -65,22 +66,16 @@ RDEPEND="
 PATCHES=(
 	"${FILESDIR}/${PN}-26.1-disable-32-bit-tests.patch"
 	"${FILESDIR}/${PN}-23.3-static_assert-failure.patch"
+	"${FILESDIR}/${PN}-27.4-findJsonCpp.patch"
+	"${FILESDIR}/${PN}-28.0-disable-test_upb-lto.patch"
 )
 
 DOCS=( CONTRIBUTORS.txt README.md )
 
-# src_prepare() {
-# 	rm "${S}/third_party/utf8_range/" -rf || die
-# 	cmake_src_prepare
-# }
+src_prepare() {
+	cmake_src_prepare
 
-src_configure() {
-	if tc-ld-is-gold; then
-		# https://sourceware.org/bugzilla/show_bug.cgi?id=24527
-		tc-ld-disable-gold
-	fi
-
-	cmake-multilib_src_configure
+	cp "${FILESDIR}/FindJsonCpp.cmake" "${S}/cmake" || die
 }
 
 multilib_src_configure() {
@@ -104,7 +99,8 @@ multilib_src_configure() {
 		-Dprotobuf_TEST_XML_OUTDIR="$(usex test)"
 
 		-Dprotobuf_WITH_ZLIB="$(usex zlib)"
-		-Dprotobuf_VERBOSE="yes"
+		-Dprotobuf_VERBOSE="$(usex debug)"
+		-DCMAKE_MODULE_PATH="${S}/cmake"
 	)
 	use test && mycmakeargs+=( -Dprotobuf_USE_EXTERNAL_GTEST="yes" )
 
@@ -120,7 +116,17 @@ src_compile() {
 }
 
 src_test() {
-	local -x srcdir="${S}"/src
+	local -x srcdir="${S}/src"
+
+	local -x TEST_TMPDIR="${T%/}/TEST_TMPDIR_${ABI}"
+	mkdir -m 777 "${TEST_TMPDIR}" || die
+
+	setup_test_env() {
+		ln -sr "${S}/src" "${BUILD_DIR}/include" || die
+	}
+
+	multilib_foreach_abi setup_test_env
+
 	cmake-multilib_src_test
 }