Add dev-ml/msgpck

Signed-off-by: Shin'ya Minazuki <shinyoukai@laidback.moe>

dev-ml/msgpck/msgpck-1.7.ebuild

@@ -0,0 +1,21 @@
+# Copyright 2026 Shin'ya Minazuki
+
+EAPI=8
+
+inherit dune
+
+DESCRIPTION="Fast MessagePack library"
+HOMEPAGE="https://opam.ocaml.org/packages/msgpck https://github.com/vbmithr/ocaml-msgpck"
+SRC_URI="https://github.com/vbmithr/ocaml-msgpck/releases/download/${PV}/msgpck-v${PV}.tbz -> ${P}.tbz"
+
+S="${WORKDIR}/${PN}-v${PV}"
+
+LICENSE="ISC"
+SLOT="0"
+KEYWORDS="~amd64"
+
+DEPEND="dev-ml/ocplib-endian"
+BDEPEND="${DEPEND}"
+RDEPEND="${DEPEND}"
+
+IUSE="ocamlopt"