MNT: use static configuration for setuptools-scm

Author: neutrinoceros

pyproject.toml

@@ -1,7 +1,7 @@
 [build-system]
 requires = [
     "setuptools>=61.2",
-    "setuptools_scm>=6.2",
+    "setuptools_scm>=8.0.0",
     "wheel",
     "jinja2>=2.10.3",
     "numpy>=2.0.0rc1",
@@ -47,6 +47,9 @@ include-package-data = false
 exclude = ["erfa._dev"]
 namespaces = false
 
+[tool.setuptools_scm]
+version_file = "erfa/_version.py"
+
 [tool.pytest.ini_options]
 minversion = "4.6"
 testpaths = ["erfa", "docs", "README.rst"]

setup.py

@@ -4,7 +4,6 @@
 import os
 import re
 import sys
-import functools
 import setuptools
 import subprocess
 from warnings import warn
@@ -179,31 +178,7 @@ def get_extensions():
     return [erfa_ext]
 
 
-try:
-    with open('erfa/_dev/scm_version.py') as fd:
-        source = fd.read()
-except FileNotFoundError:
-    guess_next_dev = None
-else:
-    import types
-    scm_version = types.ModuleType('scm_version')
-    scm_version.__file__ = 'erfa/_dev/scm_version.py'
-    code = compile(source, scm_version.__file__, 'exec')
-    try:
-        exec(code, scm_version.__dict__)
-    except ImportError:
-        guess_next_dev = None
-    else:
-        guess_next_dev = functools.partial(scm_version._guess_next_dev,
-                                           liberfadir=LIBERFADIR)
-
-use_scm_version = {
-    'write_to': os.path.join('erfa', '_version.py'),
-    'version_scheme': guess_next_dev,
-}
-
 setuptools.setup(
-    use_scm_version=use_scm_version,
     ext_modules=get_extensions(),
     cmdclass={"bdist_wheel": bdist_wheel_abi3},
 )