Moved some stuff from setup.py into pyproject.toml

Improved stuff in setup.py a bit

pyproject.toml

@@ -0,0 +1,7 @@
+[build-system]
+requires = ["setuptools>=42", "wheel", "setuptools_scm[toml]>=3.4.3"]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools_scm]
+write_to_template = "__version__ = \"{version}\"\n"
+write_to = "parglare/version.py"

setup.cfg

@@ -32,7 +32,7 @@ include_package_data = True
 package_dir =
     parglare = parglare
 test_suite = tests
-setup_requires = setuptools_scm;
+setup_requires = setuptools >= 42; wheel; setuptools_scm[toml] >= 3.4.3;
 
 
 [options.extras_require]

setup.py

@@ -7,21 +7,18 @@
 this_dir = Path(__file__).absolute().parent
 
 if sys.argv[-1].startswith('publish'):
-    if os.system("pip list | grep wheel"):
+    if os.system("pip3 list | grep wheel"):
         print("wheel not installed.\nUse `pip install wheel`.\nExiting.")
         sys.exit()
-    if os.system("pip list | grep twine"):
+    if os.system("pip3 list | grep twine"):
         print("twine not installed.\nUse `pip install twine`.\nExiting.")
         sys.exit()
-    os.system("python setup.py sdist bdist_wheel")
+    os.system("python3 -m pep517 -bs .")
     if sys.argv[-1] == 'publishtest':
         os.system("twine upload -r test dist/*")
     else:
         os.system("twine upload dist/*")
     sys.exit()
 
 if __name__ == "__main__":
-    setup(use_scm_version={
-        "write_to": str(this_dir / "parglare" / "version.py"),
-        "write_to_template": '__version__ = "{version}"\n',
-    })
+    setup()