Packaging: Use of pyproject.toml and move to minimal setup.py for modernization

.pre-commit-config.yaml

@@ -19,7 +19,7 @@ repos:
     hooks:
     - id: mypy
       name: mypy-ndsl
-      args: [--config-file, setup.cfg]
+      args: ["--config-file", "pyproject.toml"]
       additional_dependencies: [types-PyYAML]
       files: ndsl
       exclude: |
@@ -39,7 +39,6 @@ repos:
     - id: flake8
       name: flake8
       language_version: python3
-      args: [--config, setup.cfg]
       exclude: |
         (?x)^(
         .*/__init__.py |
@@ -48,4 +47,4 @@ repos:
       name: flake8 __init__.py files
       files: "__init__.py"
       # ignore unused import error in __init__.py files
-      args: ["--ignore=F401,E203", --config, setup.cfg]
+      args: ["--ignore=F401,E203"]

pyproject.toml

@@ -0,0 +1,76 @@
+[build-system]
+requires = ["setuptools >= 77.0.3"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "ndsl"
+version = "2025.05.00"
+dynamic = ["dependencies"]
+requires-python = ">=3.11"
+authors = [{name = "NOAA/NASA"}]
+readme = "README.md"
+license = "Apache-2.0"
+license-files = ["LICENSE.txt", "ndsl/viz/fv3/README.md"]
+classifiers = [
+    "Development Status :: 2 - Pre-Alpha",
+    "Intended Audience :: Developers",
+    "Natural Language :: English",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.11",
+]
+
+[project.optional-dependencies]
+docs = ["mkdocs-material"]
+demos = ["ipython", "ipykernel"]
+test = ["pytest", "pytest-subtests", "coverage"]
+develop = [
+    "ndsl[docs]",
+    "ndsl[demos]",
+    "ndsl[test]",
+    "pre-commit",
+    "pyproject-flake8"
+]
+extras = [
+    "ndsl[docs]",
+    "ndsl[demos]",
+    "ndsl[test]",
+    "ndsl[develop]",
+]
+
+[project.scripts]
+ndsl-serialbox_to_netcdf = "ndsl.stencils.testing.serialbox_to_netcdf:entry_point"
+
+[project.urls]
+Repository = "https://github.com/NOAA-GFDL/NDSL"
+
+[tool.setuptools.packages.find]
+include = ["ndsl", "ndsl.*"]
+
+[tool.setuptools]
+include-package-data = true
+
+[tool.flake8]
+exclude = ["docs"]
+extend-ignore = ["E203","E302","E704","F841","W293","E501","W503"]
+max-line-length = 88
+
+[tool.isort]
+profile = "black"
+lines_after_imports = 2
+default_section = "THIRDPARTY"
+sections = "FUTURE,STDLIB,THIRDPARTY,FIRSTPARTY,LOCALFOLDER"
+known_third_party = "f90nml,pytest,xarray,numpy,mpi4py,gt4py,dace"
+
+[tool.mypy]
+ignore_missing_imports = "true"
+follow_imports = "normal"
+namespace_packages = "true"
+strict_optional = "false"
+warn_unreachable = "true"
+explicit_package_bases = "true"
+
+[tool.coverage.run]
+parallel = true
+branch = true
+omit = ["tests/*", "*gt_cache*", ".dacecache*", "external/*", "__init__.py"]
+source_pkgs = "ndsl"

setup.py

@@ -2,7 +2,7 @@
 from pathlib import Path
 from typing import List
 
-from setuptools import find_namespace_packages, setup
+from setuptools import setup
 
 
 def local_pkg(name: str, relative_path: str) -> str:
@@ -11,19 +11,6 @@ def local_pkg(name: str, relative_path: str) -> str:
     return path
 
 
-docs_requirements = ["mkdocs-material"]
-demos_requirements = ["ipython", "ipykernel"]
-test_requirements = ["pytest", "pytest-subtests", "coverage"]
-
-develop_requirements = test_requirements + docs_requirements + ["pre-commit"]
-
-extras_requires = {
-    "demos": demos_requirements,
-    "develop": develop_requirements,
-    "docs": docs_requirements,
-    "test": test_requirements,
-}
-
 requirements: List[str] = [
     local_pkg("gt4py", "external/gt4py"),
     local_pkg("dace", "external/dace"),
@@ -42,29 +29,4 @@ def local_pkg(name: str, relative_path: str) -> str:
 ]
 
 
-setup(
-    author="NOAA/NASA",
-    python_requires=">=3.11",
-    classifiers=[
-        "Development Status :: 2 - Pre-Alpha",
-        "Intended Audience :: Developers",
-        "License :: OSI Approved :: Apache Software License",
-        "Natural Language :: English",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.11",
-    ],
-    install_requires=requirements,
-    extras_require=extras_requires,
-    name="ndsl",
-    license="Apache 2.0 license",
-    packages=find_namespace_packages(include=["ndsl", "ndsl.*"]),
-    include_package_data=True,
-    url="https://github.com/NOAA-GFDL/NDSL",
-    version="2025.05.00",
-    zip_safe=False,
-    entry_points={
-        "console_scripts": [
-            "ndsl-serialbox_to_netcdf = ndsl.stencils.testing.serialbox_to_netcdf:entry_point",
-        ]
-    },
-)
+setup(install_requires=requirements)