Add meson Python build backend (#31809)

var/spack/repos/builtin/packages/py-meson-python/package.py

@@ -0,0 +1,23 @@
+# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class PyMesonPython(PythonPackage):
+    """Meson Python build backend (PEP 517)."""
+
+    homepage = "https://github.com/FFY00/mesonpy"
+    pypi = "meson_python/meson_python-0.7.0.tar.gz"
+
+    version("0.7.0", sha256="9fcfa350f44ca80dd4f5f9c3d251725434acf9a07d9618f382e6cc4629dcbe84")
+
+    depends_on("python@3.7:", type=("build", "run"))
+    depends_on("py-meson@0.62:", type=("build", "run"))
+    depends_on("py-ninja", type=("build", "run"))
+    depends_on("py-pyproject-metadata@0.5:", type=("build", "run"))
+    depends_on("py-tomli@1:", type=("build", "run"))
+    depends_on("py-typing-extensions@3.7.4:", when="^python@:3.7", type=("build", "run"))
+    depends_on("py-colorama", when="platform=windows", type=("build", "run"))

var/spack/repos/builtin/packages/py-meson/package.py

@@ -0,0 +1,24 @@
+# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class PyMeson(PythonPackage):
+    """A high performance build system.
+
+    Meson is a cross-platform build system designed to be both as fast and as user
+    friendly as possible. It supports many languages and compilers, including GCC,
+    Clang, PGI, Intel, and Visual Studio. Its build definitions are written in a simple
+    non-Turing complete DSL.
+    """
+
+    homepage = "https://mesonbuild.com/"
+    pypi = "meson/meson-0.62.2.tar.gz"
+
+    version("0.62.2", sha256="a7669e4c4110b06b743d57cc5d6432591a6677ef2402139fe4f3d42ac13380b0")
+
+    depends_on("python@3.7:", type=("build", "run"))
+    depends_on("py-setuptools@42:", type="build")

var/spack/repos/builtin/packages/py-pyproject-metadata/package.py

@@ -0,0 +1,19 @@
+# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class PyPyprojectMetadata(PythonPackage):
+    """PEP 621 metadata parsing."""
+
+    homepage = "https://github.com/FFY00/python-pyproject-metadata"
+    pypi = "pyproject-metadata/pyproject-metadata-0.6.1.tar.gz"
+
+    version("0.6.1", sha256="b5fb09543a64a91165dfe85796759f9e415edc296beb4db33d1ecf7866a862bd")
+
+    depends_on("python@3.7:", type=("build", "run"))
+    depends_on("py-setuptools@42:", type="build")
+    depends_on("py-packaging@19:", type=("build", "run"))