dev-python/msgspec: Bump to 0.21.0

Signed-off-by: Michał Górny <mgorny@gentoo.org>

dev-python/msgspec/Manifest

@@ -1 +1,2 @@
 DIST msgspec-0.20.0.gh.tar.gz 1328648 BLAKE2B 848b29f99148ee1d5a81a6f57fdb515760c838e3ed9b8161f775d5c17b5decf7fc16a6ebd04599a1f2580e98882a7674720da899ba789ae6dbc9659da0d5ba6f SHA512 91d66d79d25ba824bb39dc02b28038c61ce3aa20576867bacbba9e22146dce424247f941b51023cce02d069d25bb2eedfb749feb597679c623d7438bc04422e4
+DIST msgspec-0.21.0.gh.tar.gz 1329617 BLAKE2B fcb1581d808e615001a7b5de75a75a4c5d7e03404b353218d733333d3142ab1f3aab23fc0f206bab5862c52be09f9b924baed3e45b203e17011fbf07ca1bdf7c SHA512 4936bd1a514a9118e016c86a2f2d4018f76aafbeb1b40b97c906774d9d7655d0794ba9b6ec3514948572b24044b08d26ad1ae26ee5f02d45ca1600f21df6c46b

dev-python/msgspec/msgspec-0.21.0.ebuild

@@ -0,0 +1,47 @@
+# Copyright 2025-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+DISTUTILS_EXT=1
+DISTUTILS_USE_PEP517=setuptools
+PYTHON_COMPAT=( python3_{11..14} )
+
+inherit distutils-r1 pypi
+
+DESCRIPTION="Fast serialization and validation library, with builtin support for many formats"
+HOMEPAGE="
+	https://jcristharif.com/msgspec/
+	https://github.com/jcrist/msgspec
+	https://pypi.org/project/msgspec/
+"
+# No tests in sdist
+SRC_URI="https://github.com/jcrist/msgspec/archive/refs/tags/${PV}.tar.gz -> ${P}.gh.tar.gz"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~amd64"
+
+BDEPEND="
+	dev-python/cython[${PYTHON_USEDEP}]
+	>=dev-python/setuptools-scm-8[${PYTHON_USEDEP}]
+	test? (
+		dev-python/attrs[${PYTHON_USEDEP}]
+		dev-python/msgpack[${PYTHON_USEDEP}]
+		dev-python/pyyaml[${PYTHON_USEDEP}]
+		dev-python/tomli-w[${PYTHON_USEDEP}]
+	)
+"
+
+EPYTEST_PLUGINS=()
+distutils_enable_tests pytest
+
+python_test() {
+	local EPYTEST_IGNORE=(
+		# Lint tests
+		tests/unit/test_cpylint.py
+	)
+
+	rm -rf msgspec || die
+	epytest tests/unit
+}