diff --git a/app-arch/7zip/7zip-24.05.ebuild b/app-arch/7zip/7zip-24.05.ebuild
new file mode 100644
index 0000000..4393a0d
--- /dev/null
+++ b/app-arch/7zip/7zip-24.05.ebuild
@@ -0,0 +1,109 @@
+# Copyright 2023-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit edos2unix flag-o-matic toolchain-funcs
+
+NO_DOT_PV=$(ver_rs 1- '')
+DESCRIPTION="Free file archiver for extremely high compression"
+HOMEPAGE="https://www.7-zip.org/ https://sourceforge.net/projects/sevenzip/"
+# linux-x64 tarball is only used for docs
+SRC_URI="
+	https://downloads.sourceforge.net/sevenzip/7-Zip/${PV}/7z${NO_DOT_PV}-src.tar.xz
+	https://downloads.sourceforge.net/sevenzip/7-Zip/${PV}/7z${NO_DOT_PV}-linux-x64.tar.xz
+"
+S="${WORKDIR}"
+
+LICENSE="LGPL-2 BSD rar? ( unRAR )"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE="uasm jwasm rar"
+REQUIRED_USE="?? ( uasm jwasm )"
+
+DOCS=( readme.txt History.txt License.txt )
+HTML_DOCS=( MANUAL )
+
+DEPEND="${RDEPEND}"
+BDEPEND="
+	uasm? ( dev-lang/uasm )
+	jwasm? ( dev-lang/jwasm )
+"
+
+PATCHES=(
+	"${FILESDIR}/${P}-respect-build-env.patch"
+)
+
+# TODO(NRK): also build and install the library
+# TODO(NRK): make it so this package can be used as a drop-in replacement
+# for app-arch/p7zip ??
+
+pkg_setup() {
+	# instructions in DOC/readme.txt, Compiling 7-Zip for Unix/Linux
+	# TLDR; every combination of options (clang|gcc)+(asm/noasm)
+	# has a dedicated makefile & builddir
+	mfile="cmpl"
+	if tc-is-clang; then
+		mfile="${mfile}_clang"
+		bdir=c
+	elif tc-is-gcc; then
+		mfile="${mfile}_gcc"
+		bdir=g
+	else
+		die "Unsupported compiler: $(tc-getCC)"
+	fi
+	if use jwasm || use uasm ; then
+		mfile="${mfile}_x64"
+		bdir="${bdir}_x64"
+	fi
+	export mfile="${mfile}.mak"
+	export bdir
+}
+
+src_prepare() {
+	# patch doesn't deal with CRLF even if file+patch match
+	# not even with --ignore-whitespace, --binary or --force
+	pushd "./CPP/7zip" || die "Unable to switch directory"
+	edos2unix ./7zip_gcc.mak ./var_gcc{,_x64}.mak ./var_clang{,_x64}.mak
+	sed -i -e 's/-Werror //g' ./7zip_gcc.mak || die "Error removing -Werror"
+	popd >/dev/null || die "Unable to switch directory"
+
+	default
+}
+
+src_compile() {
+	pushd "./CPP/7zip/Bundles/Alone2" || die "Unable to switch directory"
+
+	# avoid executable stack when using uasm/jwasm, harmless otherwise
+	append-ldflags -Wl,-z,noexecstack
+	export G_CFLAGS=${CFLAGS}
+	export G_CXXFLAGS=${CXXFLAGS}
+	export G_LDFLAGS=${LDFLAGS}
+
+	local args=(
+		-f "../../${mfile}"
+		CC=$(tc-getCC)
+		CXX=$(tc-getCXX)
+	)
+	# NOTE: makefile doesn't check the value of DISABLE_RAR_COMPRESS, only
+	# whether it's defined or not. so in case user has `rar` enabled
+	# DISABLE_RAR_COMPRESS (and DISABLE_RAR) needs to stay undefined.
+	if ! use rar; then
+		# disables non-free rar code but allows listing and extracting
+		# non-compressed rar archives
+		args+=( DISABLE_RAR_COMPRESS=1 )
+	fi
+	if use jwasm; then
+		args+=( USE_JWASM=1 )
+	elif use uasm; then
+		args+=( MY_ASM=uasm )
+	fi
+
+	emake ${args[@]}
+	popd > /dev/null || die "Unable to switch directory"
+}
+
+src_install() {
+	dobin "./CPP/7zip/Bundles/Alone2/b/${bdir}/7zz"
+	einstalldocs
+}
diff --git a/app-arch/7zip/Manifest b/app-arch/7zip/Manifest
new file mode 100644
index 0000000..9284fa1
--- /dev/null
+++ b/app-arch/7zip/Manifest
@@ -0,0 +1,2 @@
+DIST 7z2405-linux-x64.tar.xz 1553872 BLAKE2B d6c0bd4eb81f4112bfe50bf6affc68021b03d059076af5519a41c8d471e978ad2b4acc8f67c650070f9d07c518741a0146579ddfb8d56fd125f6db0beece0990 SHA512 13f97236157e2761a0bf406b08fba13a1ecc6d5663fb38f8dfe3b87f3910ba34fd359d8b36bea5135319543f31ec1e210eb512ea9864d9b140c336b9e416c313
+DIST 7z2405-src.tar.xz 1486772 BLAKE2B 609c7ae8b89e56e747ebfecb25108d8918138f48f0f2ed73183c76101ddd3615aafb9eb7823be0de2a434b450587e01f476d2ed092628a311b6e4ed091e06260 SHA512 d340adfa68e818dd3d3aa411780c81532fa37b6649178b81ec3739725f83e0bc3c01744612b2d467f4d0c2cc984dd35488406d7baee185cf372acebd9c0123a7
diff --git a/app-arch/7zip/files/7zip-24.05-respect-build-env.patch b/app-arch/7zip/files/7zip-24.05-respect-build-env.patch
new file mode 100644
index 0000000..f58dfda
--- /dev/null
+++ b/app-arch/7zip/files/7zip-24.05-respect-build-env.patch
@@ -0,0 +1,44 @@
+Respect build environment settings
+
+Bug: https://bugs.gentoo.org/913186
+Bug: https://bugs.gentoo.org/913188
+Bug: https://bugs.gentoo.org/913189
+
+
+--- a/CPP/7zip/7zip_gcc.mak
++++ b/CPP/7zip/7zip_gcc.mak
+@@ -103,14 +103,14 @@ SHARED_EXT=.dll
+ LDFLAGS = -shared -DEF $(DEF_FILE) $(LDFLAGS_STATIC)
+ else
+ SHARED_EXT=.so
+-LDFLAGS = -shared -fPIC $(LDFLAGS_STATIC)
++LDFLAGS = -shared -fPIC $(G_LDFLAGS) $(LDFLAGS_STATIC)
+ CC_SHARED=-fPIC
+ endif
+
+
+ else
+
+-LDFLAGS = $(LDFLAGS_STATIC)
++LDFLAGS = $(LDFLAGS_STATIC) $(G_LDFLAGS)
+ # -z force-bti
+ # -s is not required for clang, do we need it for GCC ???
+
+@@ -169,7 +169,7 @@ endif
+
+
+
+-CFLAGS = $(MY_ARCH_2) $(LOCAL_FLAGS) $(CFLAGS_BASE2) $(CFLAGS_BASE) $(FLAGS_FLTO) $(CC_SHARED) -o $@
++CFLAGS = $(MY_ARCH_2) $(LOCAL_FLAGS) $(CFLAGS_BASE2) $(CFLAGS_BASE) $(FLAGS_FLTO) $(CC_SHARED) $(G_CFLAGS) -o $@
+
+
+ ifdef IS_MINGW
+@@ -209,7 +209,7 @@ CXX_WARN_FLAGS =
+ #-Wno-invalid-offsetof
+ #-Wno-reorder
+
+-CXXFLAGS = $(MY_ARCH_2) $(LOCAL_FLAGS) $(CXXFLAGS_BASE2) $(CFLAGS_BASE) $(FLAGS_FLTO) $(CXXFLAGS_EXTRA) $(CC_SHARED) $(CXX_WARN_FLAGS) $(CXX_STD_FLAGS) $(CXX_INCLUDE_FLAGS) -o $@
++CXXFLAGS = $(MY_ARCH_2) $(LOCAL_FLAGS) $(CXXFLAGS_BASE2) $(CFLAGS_BASE) $(FLAGS_FLTO) $(CXXFLAGS_EXTRA) $(CC_SHARED) $(CXX_WARN_FLAGS) $(CXX_STD_FLAGS) $(CXX_INCLUDE_FLAGS) $(G_CXXFLAGS) -o $@
+
+ STATIC_TARGET=
+ ifdef COMPL_STATIC