Remove setup.py

pyproject.toml

@@ -1,9 +1,11 @@
 [build-system]
 requires = [
-  "setuptools >= 41.0.0",
-  "setuptools_scm >= 1.15.0",
+  "setuptools >= 42.0.0",  # required by pyproject+setuptools_scm integration
+  "setuptools_scm[toml] >= 3.5.0",  # required for "no-local-version" scheme
   "setuptools_scm_git_archive >= 1.0",
   "wheel",
-  "pip",
 ]
 build-backend = "setuptools.build_meta"
+
+[tool.setuptools_scm]
+local_scheme = "no-local-version"

setup.cfg

@@ -1,6 +1,3 @@
-[aliases]
-dists = clean --all sdist bdist_wheel
-
 [metadata]
 name = molecule-vagrant
 url = https://github.com/ansible-community/molecule-vagrant
@@ -55,11 +52,6 @@ packages = find:
 include_package_data = True
 zip_safe = False
 
-# These are required during `setup.py` run:
-setup_requires =
-    setuptools_scm[toml] >= 1.15.0
-    setuptools_scm_git_archive >= 1.0
-
 # These are required in actual runtime:
 install_requires =
     molecule >= 3.2.0a0

tox.ini

@@ -12,10 +12,10 @@ isolated_build = True
 [testenv]
 description =
     Unit testing
-usedevelop = True
 extras =
     test
 deps =
+    --editable .
     ansible-core
     py{36,37,38,39}: molecule[test]
     py{36,37,38,39}-{devel}: git+https://github.com/ansible-community/molecule.git@main#egg=molecule[test]
@@ -66,20 +66,25 @@ whitelist_externals =
     pre-commit
 
 [testenv:packaging]
-usedevelop = false
-skip_install = true
+description =
+  Build package, verify metadata, install package and assert behavior when ansible is missing.
 deps =
-    collective.checkdocs >= 0.2
-    pep517 >= 0.5.0
-    twine >= 2.0.0
+  build >= 0.7.0, < 0.8.0
+  twine
+skip_install = true
+# Ref: https://twitter.com/di_codes/status/1044358639081975813
 commands =
-    bash -c "rm -rf {toxinidir}/dist/ {toxinidir}/build/ && mkdir -p {toxinidir}/dist/"
-    python -m pep517.build \
-      --source \
-      --binary \
-      --out-dir {toxinidir}/dist/ \
-      {toxinidir}
-    twine check dist/*
+  # build wheel and sdist using PEP-517
+  {envpython} -c 'import os.path, shutil, sys; \
+  dist_dir = os.path.join("{toxinidir}", "dist"); \
+  os.path.isdir(dist_dir) or sys.exit(0); \
+  print("Removing \{!s\} contents...".format(dist_dir), file=sys.stderr); \
+  shutil.rmtree(dist_dir)'
+  {envpython} -m build \
+    --outdir {toxinidir}/dist/ \
+    {toxinidir}
+  # Validate metadata using twine
+  twine check --strict {toxinidir}/dist/*
 
 [testenv:lint]
 description = Performs linting, style checks