MAINT: Update build system to be PEP518 fully compliant

Author: oesteban

pyproject.toml

@@ -1,9 +1,10 @@
 [build-system]
 requires = [
-    "setuptools >= 34.4",
+    "setuptools >= 40.9",
     "setuptools_scm[toml] >= 3.4",
     "wheel"
 ]
+build-backend = "setuptools.build_meta"
 
 [tool.setuptools_scm]
 write_to = "templateflow/_version.py"

setup.cfg

@@ -14,6 +14,7 @@ long_description = file:README.rst
 long_description_content_type = text/x-rst; charset=UTF-8
 maintainer = The NiPreps developers
 maintainer_email = [email protected]
+name = templateflow
 project_urls =
     Archive = https://github.com/templateflow/templateflow
     Bug Tracker = https://github.com/templateflow/python-client/issues
@@ -23,6 +24,10 @@ project_urls =
 
 [options]
 python_requires = >= 3.6
+setup_requires =
+    setuptools >= 40.9
+    setuptools_scm[toml] >= 3.4
+    wheel
 install_requires =
     pybids >= 0.12.1
     requests

setup.py

@@ -1,25 +1,7 @@
 #!/usr/bin/env python
-"""Templateflow's setup script."""
-import sys
+"""Templateflow's PEP518 setup.py shim."""
 from setuptools import setup
 
-
-# Give setuptools a hint to complain if it's too old a version
-# 30.3.0 allows us to put most metadata in setup.cfg
-# Should match pyproject.toml
-# setuptools >= 34.4 required by setuptools_scm
-# 40.8.0 includes license_file, reducing MANIFEST.in requirements
-#
-# To install, 34.4.0 is enough, but if we're building an sdist, require 40.8.0
-# This imposes a stricter rule on the maintainer than the user
-# Keep the installation version synchronized with pyproject.toml
-SETUP_REQUIRES = ['setuptools >= %s' % ("40.8.0" if "sdist" in sys.argv else "34.4")]
-SETUP_REQUIRES += ["setuptools_scm >= 3.4", "toml"]
-# This enables setuptools to install wheel on-the-fly
-SETUP_REQUIRES += ["wheel"] if "bdist_wheel" in sys.argv else []
-
 if __name__ == "__main__":
     """ Install entry-point """
-    setup(
-        name="templateflow", setup_requires=SETUP_REQUIRES,
-    )
+    setup()