Move to pyproject.toml (#58)

The ``setup.py`` is becoming obsolete, so we modernize to
``pyproject.toml``, which is the newer format for setup configuration.

Author: mristin

check_init_and_setup_coincide.py

@@ -0,0 +1,25 @@
+"""Check that the version in ``pyproject.toml`` and ``__init__.py`` coincide."""
+
+import importlib.metadata
+import sys
+
+import abnf_to_regexp
+
+
+def main() -> None:
+    """Execute the main routine."""
+    init_version = abnf_to_regexp.__version__
+
+    pyproject_toml_version = importlib.metadata.version("abnf-to-regexp")
+
+    if init_version != pyproject_toml_version:
+        print(
+            f"The version in {abnf_to_regexp.__file__} is: {init_version!r}, "
+            f"but the version in pyproject.toml is: {pyproject_toml_version!r}",
+            file=sys.stderr,
+        )
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()

check_version_consistent.py

@@ -14,7 +14,7 @@ class Step(enum.Enum):
     PYLINT = "pylint"
     TEST = "test"
     DOCTEST = "doctest"
-    CHECK_INIT_AND_SETUP_COINCIDE = "check-init-and-setup-coincide"
+    CHECK_VERSION_CONSISTENT = "check-version-consistent"
     CHECK_HELP_IN_README = "check-help-in-readme"
 
 
@@ -72,8 +72,7 @@ def main() -> int:
         black_targets = [
             "abnf_to_regexp",
             "precommit.py",
-            "setup.py",
-            "check_init_and_setup_coincide.py",
+            "check_version_consistent.py",
             "check_help_in_readme.py",
             "dev_scripts"
         ]
@@ -160,14 +159,18 @@ def main() -> int:
         print("Skipped doctesting.")
 
     if (
-        Step.CHECK_INIT_AND_SETUP_COINCIDE in selects
-        and Step.CHECK_INIT_AND_SETUP_COINCIDE not in skips
+        Step.CHECK_VERSION_CONSISTENT in selects
+        and Step.CHECK_VERSION_CONSISTENT not in skips
     ):
-        print("Checking that abnf_to_regexp/__init__.py and setup.py coincide...")
-        subprocess.check_call([sys.executable, "check_init_and_setup_coincide.py"])
+        print(
+            "Checking that the version is consistent between "
+            "abnf_to_regexp/__init__.py and pyproject.toml ..."
+        )
+        subprocess.check_call([sys.executable, "check_version_consistent.py"])
     else:
         print(
-            "Skipped checking that abnf_to_regexp/__init__.py and " "setup.py coincide."
+            "Skipped checking that the versions in abnf_to_regexp/__init__.py "
+            "and pyproject.toml coincide."
         )
 
     if Step.CHECK_HELP_IN_README in selects and Step.CHECK_HELP_IN_README not in skips:

precommit.py

@@ -0,0 +1,57 @@
+[build-system]
+requires = ["setuptools>=61.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "abnf-to-regexp"
+version = "1.1.3"
+description = "Convert ABNF grammars to Python regular expressions."
+readme = "README.rst"
+license = {text = "MIT"}
+authors = [
+    {name = "Marko Ristin", email = "[email protected]"}
+]
+keywords = ["abnf", "backus-naur", "convert", "regular", "expressions"]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+]
+requires-python = ">=3.9"
+dependencies = [
+    "icontract>=2.5.1,<3",
+    "regex==2021.4.4",
+    "abnf>=2.0,<2.3.0",
+    "sortedcontainers>=2,<3",
+]
+
+[project.optional-dependencies]
+dev = [
+    "black==24.3.0",
+    "mypy==1.18.2",
+    "pylint==3.3.9; python_version>='3.9' and python_version<'3.12'",
+    "pylint==4.0.2; python_version>='3.12'",
+    "pydocstyle>=2.1.1,<3",
+    "coverage>=7,<8",
+    "docutils>=0.14,<1",
+    "pygments>=2,<3",
+]
+
+[project.scripts]
+abnf-to-regexp = "abnf_to_regexp.main:main"
+
+[project.urls]
+Homepage = "https://github.com/aas-core-works/abnf-to-regexp"
+
+[tool.setuptools]
+packages = ["abnf_to_regexp"]
+
+[tool.setuptools.package-data]
+abnf_to_regexp = ["py.typed"]
+
+[tool.setuptools.exclude-package-data]
+"*" = ["tests*"]