diff --git a/dev-lang/python/Manifest b/dev-lang/python/Manifest
index f9f34f4f77cd8..8849868a45dbe 100644
--- a/dev-lang/python/Manifest
+++ b/dev-lang/python/Manifest
@@ -2,6 +2,8 @@ DIST Python-2.7.18.tar.xz 12854736 BLAKE2B 060a621c91dd8e3d321aec99d44c17aa67381
 DIST Python-2.7.18.tar.xz.asc 833 BLAKE2B 1d98770e46171971fb99994508d238c01d2755281d2f94353314014d9e83e0ec5f0b3e3950ea1fdf5fce9ba6b8f55312355845c2a3fc4291c27ee56fe6215448 SHA512 c2a5f5a52f47dec52460ad3275758d4e5de6e7075c3def4353c988d74d563a39b42cae2d5eb24e2a23a6247cef69100f91620b11a49c2359fbf99b203c9cbda8
 DIST Python-3.10.0a6.tar.xz 18354336 BLAKE2B 30e39f6657546f19792e037a4dc2877c0cca722f894088736ca373c79f23d0697ef35a631a3d96a26b625fadc32dddb187bfdcf105d874efef8325704bcbb29c SHA512 b405e4d0294306ceab205ba98b6f34a0384993a2eff93b75974bb9bfc25599ab594ef98c633de9db77de11cef11f03e4c9b5090f985cc00e8b9dec39003997a6
 DIST Python-3.10.0a6.tar.xz.asc 833 BLAKE2B 415dad66ac08c086e7da1657d99864b930e07fb521a9dc7cd2b0b72d97882f71e662a42be5cec6b44cfc0d1308163f0f54e7660dc91d6a81dfa12fd0df150c83 SHA512 4f6e86afd09622a461d712b32fb48ba76c37dbc807d84cd375be4afed53b43ca4e0027a816383323d8ccd334845a2e5337ba15a83097a0e0df9270f439b1964e
+DIST Python-3.10.0a7.tar.xz 18403212 BLAKE2B f3795f82b186ef8895000498083ecc5f6f2478b22ef55ff31b25f1609ddbd3059489276695d0c156ec4d691659ffc1c4b37ffab01e3a4811f238045b66ff1f60 SHA512 050ac4a0671bd61aed581afb03f0e5cc496b6e6b3a0a2e712da20a7104dbf440f4b8d7231298691df18ef9ecc2de4741c3169bbd5bf831eb53547a270d27815b
+DIST Python-3.10.0a7.tar.xz.asc 833 BLAKE2B 8ca46ac985bce713fc4def4afe32396c61362b3e07e41b626c3766e00bf78e28c12f49a310b261f74fcadffc632e86640b915cc5d8401631921a54df033e1fa3 SHA512 a5ba57390a57fc2ae6daf9794117972f908aba127f51b8988976959f0ad8374e3d9a5f15cde91892210782aa550bbecfe71b6908310316d4fdcdb86771d5a238
 DIST Python-3.6.13.tar.xz 17213520 BLAKE2B 7c1938f92616d428d107a70397a9f7fc82377d0e3d26c2da4f5bcb79a54115f71498a5e7b5f601b6cff6f362ec1f689c3ac920eb248956e1e4f6c21602514dd1 SHA512 0482b3e7eea22b0635b61f06753e77c832c9431385c5ea1ecb8f60868262afd2b45c239badb8e906a33f035ffbf347b4a499fe6f0f008f1fa9ecc9de66c63947
 DIST Python-3.6.13.tar.xz.asc 833 BLAKE2B bc1df46c2e460c2d237647ecff84e12c75f6ed24a432d2f9cbefdead8a77d4468e5e4ed9f4debac593c63cf95d27c9f7d0f94dce69af8746cc71f0d0b1810245 SHA512 f6e8936a5e5b45d3ad41184717f5ed75debe29f81138fd1b75b53bc7d2905edff42b42dd7995b11ba6d80233c5c3755521edb19d7ac28d414bfebb2d1dfc0c86
 DIST Python-3.7.10.tar.xz 17392580 BLAKE2B b030db731d141b97f1be794a19382cc252c5bbf867661d09c9455640ebcfd3030e8a691f57fe91a2e0c4e5d3bd4f8f3de07fa4bd287a58900d8c6e1fba2f0583 SHA512 5cb61739acbd29f526d25073443398b2ca0eef30d01d134e8236c8bbc7ab0586c44ec00689f5a75e6aedc0170acf4551721ada5e967e4b99a146cfcaad949128
@@ -19,6 +21,7 @@ DIST Python-3.9.4.tar.xz.asc 833 BLAKE2B aa261d09200f150522ae9fb15e75f3a927ed48d
 DIST python-gentoo-patches-2.7.18_p7.tar.xz 26392 BLAKE2B 94a6312698789810af835a2ac8d87c34dc8d435a1ff4d5c9b7ae9175b92da6a4b204feabf9bb6db498fc6dcc17bb1b042b2b0b17ddc781587589b1ab0905396d SHA512 a3cd34f38a717183d9a8d6b91817a6ac989fb8ae4275f35cba4be810813a4c9c45f4e72d16aee33904eddaee77c4719b516392d629d2c4627c840e4ecc6bc121
 DIST python-gentoo-patches-2.7.18_p8.tar.xz 28304 BLAKE2B 76b653f45a284b7354202f646a645b1c245791a04b09cbae89b404f6bb14b56a54855433a03e96081b72c88841c125131c97f4e2714e3951472db6ec59279328 SHA512 7fed01c44cd5ed36e142a19cb10f3b5f0f8fd50e78ece32e353395e2bcee4fa0fe7f8b13d736f7b1eb5e1f2662ee4749c089fa0dda6f5d19bb08a01c7b3db200
 DIST python-gentoo-patches-3.10.0a6.tar.xz 8148 BLAKE2B 0fb7fc2eb2d17ff34f9b973aee7761d78b279425044f80a8f3f6a97ae479492f509bf4a18bce16e9b5efd44e6a755a9af3cac1a63e8fa7169e4880ad08bc0f7a SHA512 39d449ef090ac01463e507784500fde408487350d5a5cf86b9bda852f451841874557d674c69eb31e94121d2d243f862ea97cd0d8ba69f4ddfdefa461336594b
+DIST python-gentoo-patches-3.10.0a7.tar.xz 8164 BLAKE2B 7df2fea05c52279cca7f91acc72d9d9ef5f3774387f218ab70494465e76de91c6780da1d15c1097268c89c6e39e80071ab9a613aac2680cdb260aa69797a4786 SHA512 6686aec44d71813d8c044ea5715be34325753b2b79c6e2ad74badd91fd9e66040f2fec68bd886a43c409c6aafc14a7bb000db1712d7fe8fb6e4d25ae6795ce9e
 DIST python-gentoo-patches-3.6.13.tar.xz 11428 BLAKE2B 3f6ea5a5a79ba6b0d12d9d36c62232cbf0accbc3a8d792a12e2ed8ad5ce5079ac5a5d12493fbc36dff66b275a18a538c439fff02efdd77a68d5c974aa0e62a96 SHA512 118a8ca9d19b515d03ec834a950410bd8c8086dd9b3ea2e1dff5c7d3d42a4d873bccea62aa9d1b64f92892aecd090eb1337dec7d200668d55fece68eeacfa2dc
 DIST python-gentoo-patches-3.6.13_p1.tar.xz 14972 BLAKE2B 0c479bc6bac5e2c53236d8cd0c5282dfff86004f9e2a51ff027da38fac840bd02fb6bc9ddffd49f154afa96139287a3236acc6160fa7d4c233288fc0dcdb499b SHA512 90a3e1da8a6952ca68c104042097d7ed68eb4f9b0605c9db17560b791b454b829c0b13b99c259cadf86cf639f3599538df7d7e1af725f0debf30039505019905
 DIST python-gentoo-patches-3.7.10.tar.xz 10572 BLAKE2B 440d004985407beb256863d37e798dbf6626b0c26fd443a5651d76cd584323abe31a13f5370d9808cd385cd999693b59097ad6ef6142c255a7b306a632fc68cf SHA512 ffe567d05b9de5f58c6a6786a5ff28f5a09aec76a69e57ab025b1c7bab57f4087704d465c049017ffd2680cc7e7363a54c5313774c0214258fa99b56bb1d46fe
diff --git a/dev-lang/python/python-3.10.0_alpha7.ebuild b/dev-lang/python/python-3.10.0_alpha7.ebuild
new file mode 100644
index 0000000000000..7d2e54b48f918
--- /dev/null
+++ b/dev-lang/python/python-3.10.0_alpha7.ebuild
@@ -0,0 +1,350 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="7"
+WANT_LIBTOOL="none"
+
+inherit autotools check-reqs flag-o-matic multiprocessing pax-utils \
+	python-utils-r1 toolchain-funcs verify-sig
+
+MY_PV=${PV/_alpha/a}
+MY_P="Python-${MY_PV%_p*}"
+PYVER=$(ver_cut 1-2)
+PATCHSET="python-gentoo-patches-${MY_PV}"
+
+DESCRIPTION="An interpreted, interactive, object-oriented programming language"
+HOMEPAGE="https://www.python.org/"
+SRC_URI="https://www.python.org/ftp/python/${PV%%_*}/${MY_P}.tar.xz
+	https://dev.gentoo.org/~mgorny/dist/python/${PATCHSET}.tar.xz
+	verify-sig? (
+		https://www.python.org/ftp/python/${PV%%_*}/${MY_P}.tar.xz.asc
+	)"
+S="${WORKDIR}/${MY_P}"
+
+LICENSE="PSF-2"
+SLOT="${PYVER}"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+IUSE="bluetooth build examples gdbm hardened ipv6 libressl +ncurses +readline +sqlite +ssl test tk wininst +xml"
+RESTRICT="!test? ( test )"
+
+# Do not add a dependency on dev-lang/python to this ebuild.
+# If you need to apply a patch which requires python for bootstrapping, please
+# run the bootstrap code on your dev box and include the results in the
+# patchset. See bug 447752.
+
+RDEPEND="app-arch/bzip2:=
+	app-arch/xz-utils:=
+	dev-libs/libffi:=
+	sys-apps/util-linux:=
+	>=sys-libs/zlib-1.1.3:=
+	virtual/libcrypt:=
+	virtual/libintl
+	gdbm? ( sys-libs/gdbm:=[berkdb] )
+	ncurses? ( >=sys-libs/ncurses-5.2:= )
+	readline? ( >=sys-libs/readline-4.1:= )
+	sqlite? ( >=dev-db/sqlite-3.3.8:3= )
+	ssl? (
+		!libressl? ( dev-libs/openssl:= )
+		libressl? ( dev-libs/libressl:= )
+	)
+	tk? (
+		>=dev-lang/tcl-8.0:=
+		>=dev-lang/tk-8.0:=
+		dev-tcltk/blt:=
+		dev-tcltk/tix
+	)
+	xml? ( >=dev-libs/expat-2.1:= )
+	!!<sys-apps/sandbox-2.21"
+# bluetooth requires headers from bluez
+DEPEND="${RDEPEND}
+	bluetooth? ( net-wireless/bluez )
+	test? ( app-arch/xz-utils[extra-filters(+)] )"
+# autoconf-archive needed to eautoreconf
+BDEPEND="
+	sys-devel/autoconf-archive
+	virtual/pkgconfig
+	verify-sig? ( app-crypt/openpgp-keys-python )
+	!sys-devel/gcc[libffi(-)]"
+PDEPEND="app-eselect/eselect-python"
+RDEPEND+=" !build? ( app-misc/mime-types )"
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/python.org.asc
+
+# large file tests involve a 2.5G file being copied (duplicated)
+CHECKREQS_DISK_BUILD=5500M
+
+pkg_pretend() {
+	use test && check-reqs_pkg_pretend
+}
+
+pkg_setup() {
+	use test && check-reqs_pkg_setup
+}
+
+src_unpack() {
+	if use verify-sig; then
+		verify-sig_verify_detached "${DISTDIR}"/${MY_P}.tar.xz{,.asc}
+	fi
+	default
+}
+
+src_prepare() {
+	# Ensure that internal copies of expat, libffi and zlib are not used.
+	rm -fr Modules/expat || die
+	rm -fr Modules/_ctypes/libffi* || die
+	rm -fr Modules/zlib || die
+
+	local PATCHES=(
+		"${WORKDIR}/${PATCHSET}"
+	)
+
+	default
+
+	sed -i -e "s:@@GENTOO_LIBDIR@@:$(get_libdir):g" \
+		setup.py || die "sed failed to replace @@GENTOO_LIBDIR@@"
+
+	# force correct number of jobs
+	# https://bugs.gentoo.org/737660
+	local jobs=$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")
+	sed -i -e "s:-j0:-j${jobs}:" Makefile.pre.in || die
+	sed -i -e "/self\.parallel/s:True:${jobs}:" setup.py || die
+
+	eautoreconf
+}
+
+src_configure() {
+	local disable
+	# disable automagic bluetooth headers detection
+	use bluetooth || export ac_cv_header_bluetooth_bluetooth_h=no
+	use gdbm      || disable+=" gdbm"
+	use ncurses   || disable+=" _curses _curses_panel"
+	use readline  || disable+=" readline"
+	use sqlite    || disable+=" _sqlite3"
+	use ssl       || export PYTHON_DISABLE_SSL="1"
+	use tk        || disable+=" _tkinter"
+	use xml       || disable+=" _elementtree pyexpat" # _elementtree uses pyexpat.
+	export PYTHON_DISABLE_MODULES="${disable}"
+
+	if ! use xml; then
+		ewarn "You have configured Python without XML support."
+		ewarn "This is NOT a recommended configuration as you"
+		ewarn "may face problems parsing any XML documents."
+	fi
+
+	if [[ -n "${PYTHON_DISABLE_MODULES}" ]]; then
+		einfo "Disabled modules: ${PYTHON_DISABLE_MODULES}"
+	fi
+
+	if [[ "$(gcc-major-version)" -ge 4 ]]; then
+		append-flags -fwrapv
+	fi
+
+	filter-flags -malign-double
+
+	# https://bugs.gentoo.org/show_bug.cgi?id=50309
+	if is-flagq -O3; then
+		is-flagq -fstack-protector-all && replace-flags -O3 -O2
+		use hardened && replace-flags -O3 -O2
+	fi
+
+	# https://bugs.gentoo.org/700012
+	if is-flagq -flto || is-flagq '-flto=*'; then
+		append-cflags $(test-flags-CC -ffat-lto-objects)
+	fi
+
+	# Export CXX so it ends up in /usr/lib/python3.X/config/Makefile.
+	tc-export CXX
+
+	# Fix implicit declarations on cross and prefix builds. Bug #674070.
+	use ncurses && append-cppflags -I"${ESYSROOT}"/usr/include/ncursesw
+
+	local dbmliborder
+	if use gdbm; then
+		dbmliborder+="${dbmliborder:+:}gdbm"
+	fi
+
+	local myeconfargs=(
+		# glibc-2.30 removes it; since we can't cleanly force-rebuild
+		# Python on glibc upgrade, remove it proactively to give
+		# a chance for users rebuilding python before glibc
+		ac_cv_header_stropts_h=no
+
+		--enable-shared
+		--without-static-libpython
+		$(use_enable ipv6)
+		--infodir='${prefix}/share/info'
+		--mandir='${prefix}/share/man'
+		--with-computed-gotos
+		--with-dbmliborder="${dbmliborder}"
+		--with-libc=
+		--enable-loadable-sqlite-extensions
+		--without-ensurepip
+		--with-system-expat
+		--with-system-ffi
+	)
+
+	OPT="" econf "${myeconfargs[@]}"
+
+	if grep -q "#define POSIX_SEMAPHORES_NOT_ENABLED 1" pyconfig.h; then
+		eerror "configure has detected that the sem_open function is broken."
+		eerror "Please ensure that /dev/shm is mounted as a tmpfs with mode 1777."
+		die "Broken sem_open function (bug 496328)"
+	fi
+}
+
+src_compile() {
+	# Ensure sed works as expected
+	# https://bugs.gentoo.org/594768
+	local -x LC_ALL=C
+
+	emake CPPFLAGS= CFLAGS= LDFLAGS=
+
+	# Work around bug 329499. See also bug 413751 and 457194.
+	if has_version dev-libs/libffi[pax_kernel]; then
+		pax-mark E python
+	else
+		pax-mark m python
+	fi
+}
+
+src_test() {
+	# Tests will not work when cross compiling.
+	if tc-is-cross-compiler; then
+		elog "Disabling tests due to crosscompiling."
+		return
+	fi
+
+	# Skip failing tests.
+	local skipped_tests="gdb"
+
+	for test in ${skipped_tests}; do
+		mv "${S}"/Lib/test/test_${test}.py "${T}"
+	done
+
+	# bug 660358
+	local -x COLUMNS=80
+	local -x PYTHONDONTWRITEBYTECODE=
+	# workaround https://bugs.gentoo.org/775416
+	addwrite /usr/lib/python3.10/site-packages
+
+	local jobs=$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")
+
+	emake test EXTRATESTOPTS="-u-network -j${jobs}" \
+		CPPFLAGS= CFLAGS= LDFLAGS= < /dev/tty
+	local result=$?
+
+	for test in ${skipped_tests}; do
+		mv "${T}/test_${test}.py" "${S}"/Lib/test
+	done
+
+	elog "The following tests have been skipped:"
+	for test in ${skipped_tests}; do
+		elog "test_${test}.py"
+	done
+
+	elog "If you would like to run them, you may:"
+	elog "cd '${EPREFIX}/usr/lib/python${PYVER}/test'"
+	elog "and run the tests separately."
+
+	if [[ ${result} -ne 0 ]]; then
+		die "emake test failed"
+	fi
+}
+
+src_install() {
+	local libdir=${ED}/usr/lib/python${PYVER}
+
+	emake DESTDIR="${D}" altinstall
+
+	sed \
+		-e "s/\(CONFIGURE_LDFLAGS=\).*/\1/" \
+		-e "s/\(PY_LDFLAGS=\).*/\1/" \
+		-i "${libdir}/config-${PYVER}"*/Makefile || die "sed failed"
+
+	# Fix collisions between different slots of Python.
+	rm "${ED}/usr/$(get_libdir)/libpython3.so" || die
+
+	# Cheap hack to get version with ABIFLAGS
+	local abiver=$(cd "${ED}/usr/include"; echo python*)
+	if [[ ${abiver} != python${PYVER} ]]; then
+		# Replace python3.X with a symlink to python3.Xm
+		rm "${ED}/usr/bin/python${PYVER}" || die
+		dosym "${abiver}" "/usr/bin/python${PYVER}"
+		# Create python3.X-config symlink
+		dosym "${abiver}-config" "/usr/bin/python${PYVER}-config"
+		# Create python-3.5m.pc symlink
+		dosym "python-${PYVER}.pc" "/usr/$(get_libdir)/pkgconfig/${abiver/${PYVER}/-${PYVER}}.pc"
+	fi
+
+	# python seems to get rebuilt in src_install (bug 569908)
+	# Work around it for now.
+	if has_version dev-libs/libffi[pax_kernel]; then
+		pax-mark E "${ED}/usr/bin/${abiver}"
+	else
+		pax-mark m "${ED}/usr/bin/${abiver}"
+	fi
+
+	use sqlite || rm -r "${libdir}/"{sqlite3,test/test_sqlite*} || die
+	use tk || rm -r "${ED}/usr/bin/idle${PYVER}" "${libdir}/"{idlelib,tkinter,test/test_tk*} || die
+
+	dodoc Misc/{ACKS,HISTORY,NEWS}
+
+	if use examples; then
+		docinto examples
+		find Tools -name __pycache__ -exec rm -fr {} + || die
+		dodoc -r Tools
+	fi
+	insinto /usr/share/gdb/auto-load/usr/$(get_libdir) #443510
+	local libname=$(printf 'e:\n\t@echo $(INSTSONAME)\ninclude Makefile\n' | \
+		emake --no-print-directory -s -f - 2>/dev/null)
+	newins "${S}"/Tools/gdb/libpython.py "${libname}"-gdb.py
+
+	newconfd "${FILESDIR}/pydoc.conf" pydoc-${PYVER}
+	newinitd "${FILESDIR}/pydoc.init" pydoc-${PYVER}
+	sed \
+		-e "s:@PYDOC_PORT_VARIABLE@:PYDOC${PYVER/./_}_PORT:" \
+		-e "s:@PYDOC@:pydoc${PYVER}:" \
+		-i "${ED}/etc/conf.d/pydoc-${PYVER}" \
+		"${ED}/etc/init.d/pydoc-${PYVER}" || die "sed failed"
+
+	local -x EPYTHON=python${PYVER}
+	# if not using a cross-compiler, use the fresh binary
+	if ! tc-is-cross-compiler; then
+		local -x PYTHON=./python
+		local -x LD_LIBRARY_PATH=${LD_LIBRARY_PATH+${LD_LIBRARY_PATH}:}${PWD}
+	else
+		local -x PYTHON=${EPREFIX}/usr/bin/${EPYTHON}
+	fi
+
+	echo "EPYTHON='${EPYTHON}'" > epython.py || die
+	python_domodule epython.py
+
+	# python-exec wrapping support
+	local pymajor=${PYVER%.*}
+	local scriptdir=${D}$(python_get_scriptdir)
+	mkdir -p "${scriptdir}" || die
+	# python and pythonX
+	ln -s "../../../bin/${abiver}" \
+		"${scriptdir}/python${pymajor}" || die
+	ln -s "python${pymajor}" "${scriptdir}/python" || die
+	# python-config and pythonX-config
+	# note: we need to create a wrapper rather than symlinking it due
+	# to some random dirname(argv[0]) magic performed by python-config
+	cat > "${scriptdir}/python${pymajor}-config" <<-EOF || die
+		#!/bin/sh
+		exec "${abiver}-config" "\${@}"
+	EOF
+	chmod +x "${scriptdir}/python${pymajor}-config" || die
+	ln -s "python${pymajor}-config" \
+		"${scriptdir}/python-config" || die
+	# 2to3, pydoc
+	ln -s "../../../bin/2to3-${PYVER}" \
+		"${scriptdir}/2to3" || die
+	ln -s "../../../bin/pydoc${PYVER}" \
+		"${scriptdir}/pydoc" || die
+	# idle
+	if use tk; then
+		ln -s "../../../bin/idle${PYVER}" \
+			"${scriptdir}/idle" || die
+	fi
+}