diff --git a/sys-apps/nix/Manifest b/sys-apps/nix/Manifest
index 92eb2a9..abea38c 100644
--- a/sys-apps/nix/Manifest
+++ b/sys-apps/nix/Manifest
@@ -2,3 +2,4 @@ DIST nix-2.23.3.tar.gz 1621575 BLAKE2B f068a8eb02724dc621efdee3d7c967884756f4968
 DIST nix-2.24.0.tar.gz 1652048 BLAKE2B a871537bfa41ebc372acb8a88120c9147c209dd05fbc84b30989f31733f09e57a1f72f49490517e7ab21e0f48dd491dd58dedd11c9a62aef6fdb050530cd3a8d SHA512 208fdac247be822c811183f12a21abd93d72d8305af50d8c0e7a68b2d3b81ce79ee68e9220691574953b152c5acc8d7d4cc11c4d76a86a3c93050ec7ce1137db
 DIST nix-2.24.2.tar.gz 1652140 BLAKE2B 8b90d310065aa21f7fc760ce45b4777ecb86ed414d1dd1ed319a4b8caef43f41e8c37a7b2b26eee48aeef9e91b622b0199f0765472a80f6aaf69534bf260bb2b SHA512 8dde037d24b7ef508edb6b4a6b60b57de2ad349279652f01ee6772d564a43f5dcfa6be9316e33589abc782e20562d942f1d42440bd61291e443ebfa5fab0dbf0
 DIST nix-2.24.3.tar.gz 1652156 BLAKE2B f82599322560453a05029e3df130c61137f7f0f2cb89e454cc25b2d62740487029516ca0966b6dbc0fd31226238a9fcb6efa5c5be93736319002f8f2645163e2 SHA512 ac52bfc74a52f92c83a8dfdf5c0c98e18771767c92d8288e5cc4dd92ad701cd8c1c20b6eeefb39d1d6fe710a434402b3dc0af4a4fcc245663feec8323c54cb6b
+DIST nix-2.24.4.tar.gz 1649720 BLAKE2B fed037433fa0ea66f44f73d5bd8ea4aff9c5a829231eef566c961da458339e0c096132993778cd1949903ce709a109d64a670df5ed1070734348f0d24b4e6e24 SHA512 ba9868d1ecac5a1a1c911db2eefba66e169e95e65197d5c09033307c7230b11b6130abdde960e6c70e50ff8ce28195edb6fcbcb8c6ea678f9da98cf48cbc05fe
diff --git a/sys-apps/nix/nix-2.24.4.ebuild b/sys-apps/nix/nix-2.24.4.ebuild
new file mode 100644
index 0000000..53d10b3
--- /dev/null
+++ b/sys-apps/nix/nix-2.24.4.ebuild
@@ -0,0 +1,191 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit autotools linux-info readme.gentoo-r1 tmpfiles toolchain-funcs
+
+DESCRIPTION="A purely functional package manager"
+HOMEPAGE="https://nixos.org/nix"
+
+SRC_URI="https://github.com/NixOS/nix/archive/refs/tags/${PV}.tar.gz -> ${P}.tar.gz"
+LICENSE="LGPL-2.1"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE="+etc-profile +gc doc +sodium"
+
+BDEPEND="
+	doc? ( app-text/mdbook
+		app-text/mdbook-linkcheck
+	)
+"
+# sys-apps/busybox-nix-sandbox-shell is needed for sandbox mount of /bin/sh
+RDEPEND="
+	app-arch/brotli
+	app-arch/bzip2
+	app-arch/xz-utils
+	app-misc/jq
+	app-text/lowdown-nix
+	dev-cpp/gtest
+	dev-db/sqlite
+	dev-libs/editline:0=
+	dev-libs/libgit2:0=
+	amd64? ( dev-libs/libcpuid:0= )
+	dev-libs/openssl:0=
+	>=dev-libs/boost-1.66:0=[context]
+	net-misc/curl
+	sys-apps/busybox-nix-sandbox-shell
+	sys-libs/libseccomp
+	sys-libs/zlib
+	gc? ( >=dev-libs/boehm-gc-8.2.6[cxx] )
+	doc? ( dev-libs/libxml2
+		dev-libs/libxslt
+		app-text/docbook-xsl-stylesheets
+	)
+	sodium? ( dev-libs/libsodium:0= )
+"
+# add users and groups
+RDEPEND+="
+	acct-group/nixbld
+"
+for i in {1..64}; do
+	RDEPEND+="
+		>=acct-user/nixbld${i}-1
+	"
+done
+DEPEND="${RDEPEND}
+	dev-cpp/nlohmann_json
+	dev-cpp/toml11
+	>=dev-cpp/rapidcheck-0_pre20231214
+	>=sys-devel/bison-2.6
+	>=sys-devel/flex-2.5.35
+"
+
+# Upstream does not bundle .m4 files, extract from upstreams:
+# dev-util/pkgconfig: m4/pkg.m4
+# dev-build/autoconf-archive: m4/ax_boost_base.m4, m4/ax_require_defined.m4
+DEPEND+="
+	dev-build/autoconf-archive
+	virtual/pkgconfig
+"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-2.10-libpaths.patch
+	"${FILESDIR}"/${PN}-2.16-no-sandbox-fallback.patch
+	"${FILESDIR}"/${PN}-2.22-no-sandbox-fallback-README.patch
+)
+
+DISABLE_AUTOFORMATTING=yes
+DOC_CONTENTS=" Quick start user guide on Gentoo:
+
+[as root] enable nix-daemon service:
+	[systemd] # systemctl enable nix-daemon && systemctl start nix-daemon
+	[openrc]  # rc-update add nix-daemon && /etc/init.d/nix-daemon start
+[as a user] relogin to get environment and profile update
+[as a user] fetch nixpkgs update:
+	\$ nix-channel --add https://nixos.org/channels/nixpkgs-unstable
+	\$ nix-channel --update
+[as a user] install nix packages:
+	\$ nix-env -i mc
+[as a user] configure environment:
+	Somewhere in .bash_profile you might want to set
+	LOCALE_ARCHIVE=\$HOME/.nix-profile/lib/locale/locale-archive
+	but please read https://github.com/NixOS/nixpkgs/issues/21820
+
+Next steps:
+	nix package manager user manual: http://nixos.org/nix/manual/
+"
+
+pkg_pretend() {
+	# USER_NS is used to run builders in a default setting in linux:
+	#     https://nixos.wiki/wiki/Nix#Sandboxing
+	local CONFIG_CHECK="~USER_NS"
+	check_extra_config
+}
+
+src_prepare() {
+	default
+
+	eautoreconf
+	# workaround unhandled AC_CONFIG_AUX_DIR in autotools.eclass:
+	#   https://bugs.gentoo.org/927017
+	cp config.guess config/config.guess || die
+	cp config.sub config/config.sub || die
+
+	# rely on users settings
+	sed 's/GLOBAL_CXXFLAGS += -O3/GLOBAL_CXXFLAGS += /' -i Makefile || die
+
+	# inject our copy of lowdown-nix
+	export PKG_CONFIG_PATH="${PKG_CONFIG_PATH}${PKG_CONFIG_PATH:+:}${EPREFIX}/usr/$(get_libdir)/lowdown-nix/lib/pkgconfig"
+	export PATH="$PATH:${EPREFIX}/usr/$(get_libdir)/lowdown-nix/bin"
+
+	# inject rapidcheck extra includes
+	export CXXFLAGS="${CXXFLAGS} -I${EPREFIX}/usr/include/rapidcheck/extras/gtest/include"
+}
+
+src_configure() {
+	CONFIG_SHELL="${BROOT}/bin/bash" econf \
+		--localstatedir="${EPREFIX}"/nix/var \
+		$(use_enable gc) \
+		$(use_enable doc doc-gen) \
+		--with-sandbox-shell="${EPREFIX}"/usr/bin/busybox-nix-sandbox-shell
+
+	emake Makefile.config # gets generated late
+	cat >> Makefile.config <<-EOF
+	V = 1
+	CC = $(tc-getCC)
+	CXX = $(tc-getCXX)
+	EOF
+}
+
+src_compile() {
+	# Upstream does not support building without installation.
+	# Rely on src_install's DESTDIR=.
+	:
+}
+
+src_install() {
+	# TODO: emacs highlighter
+	default
+
+	readme.gentoo_create_doc
+
+	# TODO: will need a tweak for prefix
+
+	# Follow the steps of 'scripts/install-multi-user.sh:create_directories()'
+	local dir dirs=(
+		/nix
+		/nix/var
+		/nix/var/log
+		/nix/var/log/nix
+		/nix/var/log/nix/drvs
+		/nix/var/nix{,/db,/gcroots,/profiles,/temproots,/userpool,/daemon-socket}
+		/nix/var/nix/{gcroots,profiles}/per-user
+	)
+	for dir in "${dirs[@]}"; do
+		keepdir "${dir}"
+		fperms 0755 "${dir}"
+	done
+
+	keepdir             /nix/store
+	fowners root:nixbld /nix/store
+	fperms 1775         /nix/store
+
+	newinitd "${FILESDIR}"/nix-daemon.initd nix-daemon
+
+	if ! use etc-profile; then
+		rm "${ED}"/etc/profile.d/nix.sh || die
+	fi
+	# nix-daemon.sh should not be used for users' profile.
+	# Only for daemon itself.
+	rm "${ED}"/etc/profile.d/nix-daemon.sh || die
+}
+
+pkg_postinst() {
+	if ! use etc-profile; then
+		ewarn "${EROOT}/etc/profile.d/nix.sh was removed (due to USE=-etc-profile)."
+	fi
+
+	readme.gentoo_print_elog
+	tmpfiles_process nix-daemon.conf
+}