dev-ml/patch: new package; add version 3.0.1

Signed-off-by: Maciej Barć <xgqt@gentoo.org>

dev-ml/patch/Manifest

@@ -0,0 +1 @@
+DIST patch-3.0.1.tar.gz 28358 BLAKE2B 0fdb7b9ed5b767ae56c438c2fa4decbc88da94ecb3989a0ac0d2938ce4bdb88045da6dec42454a46da6cfc3c547a842b30e28e663620132cc3a7cbdd1695120a SHA512 c8898796df0fbe93e2501c919ecfd3f49f18ad29a29711b5797dc34604261ff275967f81f35fc1d41c4a9a08a6d88ea6a60496f2e40f40268cc6a316a9e4ba7d

dev-ml/patch/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+
+<pkgmetadata>
+  <maintainer type="project">
+    <email>ml@gentoo.org</email>
+    <name>ML</name>
+  </maintainer>
+  <upstream>
+    <bugs-to>https://github.com/hannesm/patch/issues/</bugs-to>
+    <remote-id type="github">hannesm/patch</remote-id>
+  </upstream>
+</pkgmetadata>

dev-ml/patch/patch-3.0.1.ebuild

@@ -0,0 +1,31 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit dune
+
+DESCRIPTION="Patch library purely in OCaml"
+HOMEPAGE="https://github.com/hannesm/patch/"
+
+if [[ "${PV}" == *9999* ]] ; then
+	inherit git-r3
+
+	EGIT_REPO_URI="https://github.com/hannesm/${PN}"
+else
+	SRC_URI="https://github.com/hannesm/${PN}/archive/refs/tags/v${PV}.tar.gz
+		-> ${P}.tar.gz"
+
+	KEYWORDS="~amd64 ~x86"
+fi
+
+LICENSE="LGPL-2.1"
+SLOT="0/${PV}"
+IUSE="+ocamlopt test"
+RESTRICT="!test? ( test )"
+
+BDEPEND="
+	test? (
+		dev-ml/alcotest
+	)
+"