diff --git a/dev-python/uv-build/Manifest b/dev-python/uv-build/Manifest
index 9de20c2e80295..148406145016c 100644
--- a/dev-python/uv-build/Manifest
+++ b/dev-python/uv-build/Manifest
@@ -2,3 +2,4 @@ DIST uv_build-0.9.4.tar.gz 332506 BLAKE2B 3b65cc80192cf3abc33bcf01735c8b7f937a12
 DIST uv_build-0.9.6.tar.gz 332253 BLAKE2B 2c3fa23dbe36b0866a3a3194b07ee1212cb00acd785c375646c3eb6c97a63435f28c9e934f56c8d6feeec145aace1aad37550b85ae2a611f521fc25a4c7d3bc1 SHA512 e8d8bbd46c92722261722f3d8865b2b24e695edf52652c1d1310adae3cb437ebef5397feda90e3bf863394ca75cf3024eb90a5f80b2b92af24ede4e2f81b0ce1
 DIST uv_build-0.9.7.tar.gz 332992 BLAKE2B 069e615f41e78098b61cc073cb01bc77e0e6778f3054ccfcf36985be3755d7e819cc1bd151e875db109461f423cc855cd336467015ec7103e47346f230564679 SHA512 d61249de00640f6e0ab62ab440a8aae1802acbd6cf8ecb8aca3efe26361d7191d057735ab91c174c5772fc04accf0ae3281f447d010c99e2f458829f4c618abc
 DIST uv_build-0.9.8.tar.gz 333344 BLAKE2B 4a841b4ca879734917bd09a7d1960dad322baa969fc55ec038c0318e8931ac129a0a3d03865a55ba4fa4a0f4beba398c1715c8faf1a275c1a4458317841253e6 SHA512 2c5f54a887ce7256911dabb54435618354f3caa1a941e77ed5a4b1c7015221a0009da08e8c46d569f92ac263bc544335ed2060de37ac5c27ee0789153f2edbac
+DIST uv_build-0.9.9.tar.gz 335127 BLAKE2B f3d9bcefc948a95219cb1b2420bf6056c0a32cd5217ffe443a8d19a3c1bf9c8458dae63d2b2cdf48bcd6b27fd1ebc1a1d0209dd8087a9e84697b3bea9d7eb580 SHA512 1be1d726589a5edf657c55a464cfbb4b109500585de9cd7de90572ddaea5ccdfef1aaba9262352f4533c7962e252ff6f03f093c21b2d54d0168d2bb93a0a1d01
diff --git a/dev-python/uv-build/uv-build-0.9.9.ebuild b/dev-python/uv-build/uv-build-0.9.9.ebuild
new file mode 100644
index 0000000000000..ca71aacd7b982
--- /dev/null
+++ b/dev-python/uv-build/uv-build-0.9.9.ebuild
@@ -0,0 +1,99 @@
+# Copyright 2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+# Maturin compiles uv-build executable for every impl, we do not want
+# that, so we use another backend.  And since we use another backend,
+# why not dogfood it in the first place?
+DISTUTILS_USE_PEP517=standalone
+PYTHON_COMPAT=( pypy3_11 python3_{11..14} )
+
+inherit distutils-r1 pypi
+
+DESCRIPTION="PEP517 uv build backend"
+HOMEPAGE="
+	https://github.com/astral-sh/uv/
+	https://pypi.org/project/uv-build/
+"
+
+LICENSE="|| ( Apache-2.0 MIT )"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~loong ~ppc ~ppc64 ~riscv ~x86"
+IUSE="test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	>=dev-python/uv-${PV}
+"
+BDEPEND="
+	test? (
+		app-arch/unzip
+		dev-python/build[${PYTHON_USEDEP}]
+	)
+"
+
+src_prepare() {
+	distutils-r1_src_prepare
+
+	# use the executable from dev-python/uv instead of building
+	# a largely overlapping uv-build executable (at least for now)
+	sed -i -e '/USE_UV_EXECUTABLE/s:False:True:' python/uv_build/__init__.py || die
+
+	# replace the build-system section
+	sed -i -e '/\[build-system\]/,$d' pyproject.toml || die
+	cat >> pyproject.toml <<-EOF || die
+		[build-system]
+		requires = ["uv_build<9999"]
+		build-backend = "uv_build"
+		backend-path = ["src"]
+	EOF
+
+	# rename to make uv-build find it
+	mv python src || die
+}
+
+python_test() {
+	"${EPYTHON}" -m build -n || die "Self-build failed with ${EPYTHON}"
+
+	local zip_result=$(
+		unzip -t "dist/uv_build-${PV}-py3-none-any.whl" || die
+	)
+	local zip_expected="\
+Archive:  dist/uv_build-${PV}-py3-none-any.whl
+    testing: uv_build/                OK
+    testing: uv_build/__init__.py     OK
+    testing: uv_build/__main__.py     OK
+    testing: uv_build/py.typed        OK
+    testing: uv_build-${PV}.dist-info/   OK
+    testing: uv_build-${PV}.dist-info/WHEEL   OK
+    testing: uv_build-${PV}.dist-info/METADATA   OK
+    testing: uv_build-${PV}.dist-info/RECORD   OK
+No errors detected in compressed data of dist/uv_build-${PV}-py3-none-any.whl.\
+"
+	if [[ ${zip_result} != ${zip_expected} ]]; then
+		eerror ".zip result:\n${zip_result}"
+		eerror ".zip expected:\n${zip_expected}"
+		die ".whl result mismatch"
+	fi
+
+	local tar_result=$(
+		tar -tf "dist/uv_build-${PV}.tar.gz" || die
+	)
+	local tar_expected="\
+uv_build-${PV}/PKG-INFO
+uv_build-${PV}/
+uv_build-${PV}/README.md
+uv_build-${PV}/pyproject.toml
+uv_build-${PV}/src
+uv_build-${PV}/src/uv_build
+uv_build-${PV}/src/uv_build/__init__.py
+uv_build-${PV}/src/uv_build/__main__.py
+uv_build-${PV}/src/uv_build/py.typed\
+"
+	if [[ ${tar_result} != ${tar_expected} ]]; then
+		eerror ".tar.gz result:\n${tar_result}"
+		eerror ".tar.gz expected:\n${tar_expected}"
+		die ".tar.gz result mismatch"
+	fi
+}