dev-ml/ppx_tools: add 6.3

Closes: https://bugs.gentoo.org/795039
Signed-off-by: Sam James <[email protected]>

dev-ml/ppx_tools/Manifest

@@ -1 +1,2 @@
 DIST ppx_tools-6.2.tar.gz 46150 BLAKE2B f8af2a1eee81d5a1e73ac606ab79d285c8c226533bcf715ed22386aecfaf51260fb9a5075d270675f1b601cb174b68d8c85556f418031a7b6bda06c4376fe443 SHA512 fc3943c69901ef46843355c3482d5a1481d05ee94fb0a344ec04101059a02cbaa76fed5742cfae82730edf378f2e140d859a5cf590653f85359255d451f07dc8
+DIST ppx_tools-6.3.tar.gz 18811 BLAKE2B b1389dbe0c6fd855cafc8d64a9db550866317172909c2731f01acd412c6f8147f07e19a82d527187d0b211fca9eb2f2ad63bb53e8f375b0b8107c4e723710000 SHA512 6a88f6f877f49ea8736aeca60673a19c52d5104ad9e2a3e56db3f71cd557d39df9c709c4e678ccf10263ff1f3e0504f4676227bd05ceba1e0294453a988a736c

dev-ml/ppx_tools/ppx_tools-6.3.ebuild

@@ -0,0 +1,17 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit dune
+
+MY_PV=$(ver_rs 2 '+')
+DESCRIPTION="Tools for authors of ppx rewriters"
+HOMEPAGE="https://github.com/alainfrisch/ppx_tools"
+SRC_URI="https://github.com/alainfrisch/ppx_tools/archive/${MY_PV}.tar.gz -> ${P}.tar.gz"
+S="${WORKDIR}/${PN}-$(ver_rs 2 '-')"
+
+LICENSE="MIT"
+SLOT="0/${PV}"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~x86"
+IUSE="+ocamlopt"