Migrate from setup.py to pyproject.toml.

Author: whitequark

.git_archival.txt

@@ -0,0 +1,4 @@
+node: $Format:%H$
+node-date: $Format:%cI$
+describe-name: $Format:%(describe:tags=true,match=*[0-9]*)$
+ref-names: $Format:%D$

.gitattributes

@@ -0,0 +1 @@
+.git_archival.txt export-subst

pyproject.toml

@@ -1,3 +1,24 @@
 [build-system]
-requires = ["wheel", "setuptools", "setuptools_scm"]
+requires = ["wheel", "setuptools~=67.0", "setuptools_scm[toml]>=6.2"]
 build-backend = "setuptools.build_meta"
+
+[project]
+dynamic = ["version"]
+
+name = "amaranth-stdio"
+description = "Industry standard I/O for Amaranth HDL"
+authors = [{name = "Amaranth HDL contributors"}]
+license = {file = "LICENSE.txt"}
+
+dependencies = [
+  "importlib_metadata; python_version<'3.8'",
+  # this version requirement needs to be synchronized with the one in .github/workflows/main.yml
+  "amaranth>=0.3,<0.5",
+]
+
+[project.urls]
+"Source Code" = "https://github.com/amaranth-lang/amaranth-stdio"
+"Bug Tracker" = "https://github.com/amaranth-lang/amaranth-stdio/issues"
+
+[tool.setuptools_scm]
+local_scheme = "node-and-timestamp"

setup.py

@@ -1,35 +1,4 @@
-from setuptools import setup, find_packages
+from setuptools import setup
 
 
-def scm_version():
-    def local_scheme(version):
-        if version.tag and not version.distance:
-            return version.format_with("")
-        else:
-            return version.format_choice("+{node}", "+{node}.dirty")
-    return {
-        "relative_to": __file__,
-        "version_scheme": "guess-next-dev",
-        "local_scheme": local_scheme
-    }
-
-
-setup(
-    name="amaranth-stdio",
-    use_scm_version=scm_version(),
-    author="whitequark",
-    author_email="whitequark@whitequark.org",
-    description="Industry standard I/O for Amaranth HDL",
-    #long_description="""TODO""",
-    license="BSD",
-    setup_requires=["wheel", "setuptools", "setuptools_scm"],
-    install_requires=[
-        "amaranth>=0.2,<0.5",
-        "importlib_metadata; python_version<'3.8'",
-    ],
-    packages=find_packages(),
-    project_urls={
-        "Source Code": "https://github.com/amaranth-lang/amaranth-stdio",
-        "Bug Tracker": "https://github.com/amaranth-lang/amaranth-stdio/issues",
-    },
-)
+setup()