diff --git a/sdk_container/src/third_party/portage-stable/app-arch/zstd/files/zstd-1.5.7-move-pragma-before-static.patch b/sdk_container/src/third_party/portage-stable/app-arch/zstd/files/zstd-1.5.7-move-pragma-before-static.patch
new file mode 100644
index 0000000000..42b7266a2c
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/app-arch/zstd/files/zstd-1.5.7-move-pragma-before-static.patch
@@ -0,0 +1,45 @@
+https://github.com/facebook/zstd/pull/4341
+
+From cd8ca9d92e6fb3a4c962f8f6f50c3ee467177e06 Mon Sep 17 00:00:00 2001
+From: "Z. Liu" <zhixu.liu@gmail.com>
+Date: Thu, 20 Mar 2025 03:28:37 +0000
+Subject: [PATCH] lib/zstd.h: move pragma before static
+
+otherwise will cause dev-python/zstandard build failed when compiling with
+clang as reported at https://bugs.gentoo.org/950259
+
+the root cause is pycparser, which is unfixed since reported 2.5 years
+ago, :(
+
+Signed-off-by: Z. Liu <zhixu.liu@gmail.com>
+---
+ lib/zstd.h | 9 ++++-----
+ 1 file changed, 4 insertions(+), 5 deletions(-)
+
+diff --git a/lib/zstd.h b/lib/zstd.h
+index 9fe542ed..85046949 100644
+--- a/lib/zstd.h
++++ b/lib/zstd.h
+@@ -1868,15 +1868,14 @@ ZSTDLIB_STATIC_API const ZSTD_DDict* ZSTD_initStaticDDict(
+ typedef void* (*ZSTD_allocFunction) (void* opaque, size_t size);
+ typedef void  (*ZSTD_freeFunction) (void* opaque, void* address);
+ typedef struct { ZSTD_allocFunction customAlloc; ZSTD_freeFunction customFree; void* opaque; } ZSTD_customMem;
+-static
+-#ifdef __GNUC__
+-__attribute__((__unused__))
+-#endif
+-
+ #if defined(__clang__) && __clang_major__ >= 5
+ #pragma clang diagnostic push
+ #pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant"
+ #endif
++static
++#ifdef __GNUC__
++__attribute__((__unused__))
++#endif
+ ZSTD_customMem const ZSTD_defaultCMem = { NULL, NULL, NULL };  /**< this constant defers to stdlib's functions */
+ #if defined(__clang__) && __clang_major__ >= 5
+ #pragma clang diagnostic pop
+-- 
+2.45.2
+
diff --git a/sdk_container/src/third_party/portage-stable/app-arch/zstd/zstd-1.5.7-r1.ebuild b/sdk_container/src/third_party/portage-stable/app-arch/zstd/zstd-1.5.7-r1.ebuild
new file mode 100644
index 0000000000..a42999c07e
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/app-arch/zstd/zstd-1.5.7-r1.ebuild
@@ -0,0 +1,72 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit meson-multilib
+
+DESCRIPTION="zstd fast compression library"
+HOMEPAGE="https://facebook.github.io/zstd/"
+SRC_URI="https://github.com/facebook/zstd/releases/download/v${PV}/${P}.tar.gz"
+S="${WORKDIR}"/${P}/build/meson
+
+LICENSE="|| ( BSD GPL-2 )"
+SLOT="0/1"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+IUSE="+lzma lz4 static-libs test zlib"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	lzma? ( app-arch/xz-utils )
+	lz4? ( app-arch/lz4:= )
+	zlib? ( sys-libs/zlib )
+"
+DEPEND="${RDEPEND}"
+
+MESON_PATCHES=(
+	# Workaround until Valgrind bugfix lands
+	"${FILESDIR}"/${PN}-1.5.4-no-find-valgrind.patch
+)
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-1.5.7-move-pragma-before-static.patch
+)
+
+src_prepare() {
+	cd "${WORKDIR}"/${P} || die
+	default
+
+	cd "${S}" || die
+	eapply "${MESON_PATCHES[@]}"
+}
+
+multilib_src_configure() {
+	local native_file="${T}"/meson.${CHOST}.${ABI}.ini.local
+
+	# This replaces the no-find-valgrind patch once bugfix lands in a meson
+	# release + we can BDEPEND on it (https://github.com/mesonbuild/meson/pull/11372)
+	cat >> ${native_file} <<-EOF || die
+	[binaries]
+	valgrind='valgrind-falseified'
+	EOF
+
+	local emesonargs=(
+		-Ddefault_library=$(multilib_native_usex static-libs both shared)
+
+		$(meson_native_true bin_programs)
+		$(meson_native_true bin_contrib)
+		$(meson_use test bin_tests)
+
+		$(meson_native_use_feature zlib)
+		$(meson_native_use_feature lzma)
+		$(meson_native_use_feature lz4)
+
+		--native-file "${native_file}"
+	)
+
+	meson_src_configure
+}
+
+multilib_src_test() {
+	meson_src_test --timeout-multiplier=2
+}
diff --git a/sdk_container/src/third_party/portage-stable/app-arch/zstd/zstd-1.5.7.ebuild b/sdk_container/src/third_party/portage-stable/app-arch/zstd/zstd-1.5.7.ebuild
index 6d1fa6b838..7adc3fdbcd 100644
--- a/sdk_container/src/third_party/portage-stable/app-arch/zstd/zstd-1.5.7.ebuild
+++ b/sdk_container/src/third_party/portage-stable/app-arch/zstd/zstd-1.5.7.ebuild
@@ -12,7 +12,7 @@ S="${WORKDIR}"/${P}/build/meson
 
 LICENSE="|| ( BSD GPL-2 )"
 SLOT="0/1"
-KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ~ppc ppc64 ~riscv ~s390 sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+KEYWORDS="~alpha amd64 arm arm64 hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
 IUSE="+lzma lz4 static-libs test zlib"
 RESTRICT="!test? ( test )"