Port from setuptools.build_meta to meson-python

cf_units/__init__.py

@@ -32,7 +32,6 @@
 )
 
 from . import config
-from ._version import version as __version__  # noqa: F401
 from .util import _OrderedHashable
 
 __all__ = [

cf_units/_udunits2_parser/meson.build

@@ -0,0 +1,13 @@
+python_sources = [
+  '__init__.py',
+  'compile.py',
+  'graph.py',
+]
+
+py.install_sources(
+  python_sources,
+  pure: false,
+  subdir: 'cf_units/_udunits2_parser'
+)
+
+subdir('parser')

cf_units/_udunits2_parser/parser/meson.build

@@ -0,0 +1,12 @@
+python_sources = [
+  '__init__.py',
+  'udunits2Lexer.py',
+  'udunits2Parser.py',
+  'udunits2ParserVisitor.py',
+]
+
+py.install_sources(
+  python_sources,
+  pure: false,
+  subdir: 'cf_units/_udunits2_parser/parser'
+)

cf_units/meson.build

@@ -0,0 +1,25 @@
+python_sources = [
+  '__init__.py',
+  'config.py',
+  'tex.py',
+  'util.py',
+]
+
+py.install_sources(
+  python_sources,
+  pure: false,
+  subdir: 'cf_units'
+)
+
+udunits2 = dependency('udunits')
+
+py.extension_module(
+    '_udunits2',
+    ['_udunits2.pyx'],
+    dependencies: [udunits2],
+    install: true,
+    subdir: 'cf_units'
+)
+
+subdir('tests')
+subdir('_udunits2_parser')

cf_units/tests/integration/meson.build

@@ -0,0 +1,16 @@
+python_sources = [
+  '__init__.py',
+  'test_date2num.py',
+  'test_num2date.py',
+  'test_num2pydate.py',
+  'test__Unit_date2num.py',
+  'test__Unit_num2date.py',
+]
+
+py.install_sources(
+  python_sources,
+  pure: false,
+  subdir: 'cf_units/tests/integration'
+)
+
+subdir('parse')

cf_units/tests/integration/parse/meson.build

@@ -0,0 +1,10 @@
+python_sources = [
+  'test_graph.py',
+  'test_parse.py',
+]
+
+py.install_sources(
+  python_sources,
+  pure: false,
+  subdir: 'cf_units/tests/integration/parse'
+)

cf_units/tests/meson.build

@@ -0,0 +1,15 @@
+python_sources = [
+  '__init__.py',
+  'test_coding_standards.py',
+  'test_tex.py',
+  'test_unit.py',
+]
+
+py.install_sources(
+  python_sources,
+  pure: false,
+  subdir: 'cf_units/tests'
+)
+
+subdir('integration')
+subdir('unit')

cf_units/tests/unit/meson.build

@@ -0,0 +1,12 @@
+python_sources = [
+  '__init__.py',
+  'test__udunits2.py',
+]
+
+py.install_sources(
+  python_sources,
+  pure: false,
+  subdir: 'cf_units/tests/unit'
+)
+
+subdir('unit')

cf_units/tests/unit/unit/meson.build

@@ -0,0 +1,10 @@
+python_sources = [
+  'test_as_unit.py',
+  'test_Unit.py',
+]
+
+py.install_sources(
+  python_sources,
+  pure: false,
+  subdir: 'cf_units/tests/unit/unit'
+)

meson.build

@@ -0,0 +1,6 @@
+project('cf-units', 'cython', version: '1.3.0')
+
+py_mod = import('python')
+py = py_mod.find_installation(pure: true)
+
+subdir('cf_units')

pyproject.toml

@@ -1,14 +1,28 @@
-[build-system]
-# Defined by PEP 518
-requires = [
-  "setuptools>=45",
-  "setuptools_scm[toml]>=7.0",
-  "wheel",
-  "oldest-supported-numpy",
-  "Cython"
+[project]
+name = "cf-units"
+dynamic = ["version"]
+description = "Units of measure as required by the Climate and Forecast (CF) Metadata Conventions"
+requires-python = ">=3.10"
+readme = "README.md"
+dependencies = [
+     'python>=3.8',
+     'cftime>=1.6',
+     'Jinja2>=3',
+     'numpy>=1.18',
+     'antlr4-python3-runtime==4.11.1',
+]
+
+[project.optional-dependencies]
+build = [
+      'Cython>=3',
+      'meson-python>=0.15.0',
+      'pytest>=7',
+      'spin>=0.8',
 ]
-# Defined by PEP 517
-build-backend = "setuptools.build_meta"
+
+[build-system]
+requires = ['meson-python', 'cython']
+build-backend = 'mesonpy'
 
 [tool.coverage.run]
 branch = true
@@ -19,8 +33,6 @@ include = [
     "cf_units/*"
 ]
 omit = [
-    "setup.py",
-    "cf_units/_version.py",
     "cf_units/etc/*",
     "cf_units/tests/*",
     "cf_units/_udunits2_parser/parser/*",
@@ -35,12 +47,6 @@ exclude_lines = [
     "if __name__ == .__main__.:"
 ]
 
-[tool.pytest.ini_options]
-addopts = "-ra -v --doctest-modules"
-doctest_optionflags = "NORMALIZE_WHITESPACE ELLIPSIS NUMBER"
-minversion = "6.0"
-testpaths = "cf_units"
-
 [tool.setuptools_scm]
 write_to = "cf_units/_version.py"
 local_scheme = "dirty-tag"
@@ -73,3 +79,22 @@ line_length = 79
 profile = "black"
 skip_gitignore = "True"
 verbose = "False"
+
+[tool.spin]
+package = 'cf_units'
+
+[tool.spin.commands]
+Build = [
+    'spin.cmds.meson.build',
+    'spin.cmds.meson.test',
+    'spin.cmds.build.sdist',
+]
+Environments = [
+    'spin.cmds.meson.run',
+    'spin.cmds.meson.python',
+]
+
+[tool.pytest.ini_options]
+addopts = "-ra -v --doctest-modules"
+doctest_optionflags = "NORMALIZE_WHITESPACE ELLIPSIS NUMBER"
+minversion = "6.0"