Add binary package for libsignal_ffi.

dev-libs/libsignal-ffi-bin/Manifest

@@ -0,0 +1,2 @@
+DIST libsignal-ffi-bin-0.42.0.a 33239536 BLAKE2B e2310a063d6c28515ebdea0e7fdac1f39ecfa0b69ab7d6a1fae44c781306ab1515d0d0e67eef244241903cfc99fa74e998301f15bc502e8293520bb452563c9c SHA512 403e623ceaa664091b0ea84917dd060e5878c8f7a8688319f99907f49810c9154f92036c7fe88f8fe11040776ced1c8e5d68c16921fc31cfd5dd5bc862198c65
+EBUILD libsignal-ffi-bin-0.42.0.ebuild 724 BLAKE2B 3ab13f1e626ed6cc7af02df649769fc1dc54271cf55a19e0c2d1f01cf226ab9f534453f0b94e00c4cb05d2327578aa86616b03650eb4439bce77a0cfe215eb47 SHA512 4d41a41aad9ad823a7640e2cb9e75429c32b754dd4437766ec02af51250737fc1648a6a55f979aeb5e5742a05b3999e8b5762ab59d1ff16a862ad1643af3af03

dev-libs/libsignal-ffi-bin/libsignal-ffi-bin-0.42.0.ebuild

@@ -0,0 +1,40 @@
+# Copyright 2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+DESCRIPTION="libsignal-ffi prebuilt binary package"
+HOMEPAGE="homepage field in Cargo.toml inaccessible to cargo metadata"
+SRC_URI="https://gentoo-overlay.friedli.info/libsignal_ffi-${PV}.a -> ${P}.a"
+
+LICENSE="AGPL-3"
+SLOT="0"
+KEYWORDS="~amd64"
+
+DEPEND=""
+RDEPEND="${DEPEND}"
+BDEPEND=""
+
+RESTRICT="mirror"
+
+S="${WORKDIR}"
+
+MY_TARGET_NAME="libsignal_ffi-${PV}.a"
+
+src_unpack() {
+	cp "${DISTDIR}/${P}.a" "${S}/"
+}
+
+src_prepare() {
+	mv "${P}.a" "${MY_TARGET_NAME}"
+	eapply_user
+}
+
+src_compile() {
+	:
+}
+
+src_install() {
+	dolib.a "${MY_TARGET_NAME}"
+	dosym -r /usr/lib64/"${MY_TARGET_NAME}" /usr/lib64/libsignal_ffi.a
+}

metadata/md5-cache/dev-libs/libsignal-ffi-bin-0.42.0

@@ -0,0 +1,10 @@
+DEFINED_PHASES=compile install prepare unpack
+DESCRIPTION=libsignal-ffi prebuilt binary package
+EAPI=8
+HOMEPAGE=homepage field in Cargo.toml inaccessible to cargo metadata
+KEYWORDS=~amd64
+LICENSE=AGPL-3
+RESTRICT=mirror
+SLOT=0
+SRC_URI=https://gentoo-overlay.friedli.info/libsignal_ffi-0.42.0.a -> libsignal-ffi-bin-0.42.0.a
+_md5_=95e27b9bc668e2f9a77c30d8fe274d54