dev-ml/*: version bump cstruct to 6.2.0, psq to 0.2.1

- cstruct: get rid of unnecessary ocaml-migrate-parsetree dependency
  O-M-PT is superseded by ppxlib, which already gets pulled in by the ppx useflag

Signed-off-by: Alain Emilia Anna Zscheile <fogti+devel@ytrizja.de>
Signed-off-by: David Roman <davidroman96@gmail.com>

dev-ml/psq/psq-0.2.1.ebuild

@@ -0,0 +1,26 @@
+# Copyright 2019-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit dune
+
+DESCRIPTION="Functional Priority Search Queues for OCaml"
+HOMEPAGE="https://github.com/pqwy/psq"
+SRC_URI="https://github.com/pqwy/psq/releases/download/v${PV}/${P}.tbz"
+
+LICENSE="ISC"
+SLOT="0/${PV}"
+KEYWORDS="~amd64"
+IUSE="ocamlopt test"
+
+RDEPEND="dev-ml/seq:="
+DEPEND="
+	${RDEPEND}
+	test? (
+		dev-ml/qcheck:*
+		dev-ml/alcotest:*
+	)
+"
+
+RESTRICT="!test? ( test )"