Remove setup.py (#757)

* Remove setup.py

* Use isolated_build for pyproject.toml

* Remove 'twine check' from docs build

* Add 'twine check' to release

* Use build instead of pep517

* Update tox minversion

Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>

* Move 'twine check' back to docs

Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>

pyproject.toml

@@ -1,6 +1,9 @@
+# pyproject.toml
 [build-system]
-requires = ["setuptools>=40.8", "wheel", "setuptools_scm>=1.15"]
-build-backend = "setuptools.build_meta:__legacy__"
+requires = ["setuptools>=45", "wheel", "setuptools_scm[toml]>=6.0"]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools_scm]
 
 [tool.towncrier]
 package = "twine"

setup.cfg

@@ -5,6 +5,7 @@ author = Donald Stufft and individual contributors
 author_email = donald@stufft.io
 description = Collection of utilities for publishing packages on PyPI
 long_description = file:README.rst
+long_description_content_type = text/x-rst
 url = https://twine.readthedocs.io/
 project_urls =
     Source = https://github.com/pypa/twine/
@@ -43,8 +44,6 @@ install_requires=
     keyring >= 15.1
     rfc3986 >= 1.4.0
     colorama >= 0.4.3
-setup_requires =
-    setuptools_scm >= 1.15
 include_package_data = True
 
 [options.entry_points]

tox.ini

@@ -1,6 +1,7 @@
 [tox]
-minversion = 2.4
+minversion = 3.3
 envlist = lint,types,py{36,37,38,39},integration,docs
+isolated_build = True
 
 [testenv]
 deps =
@@ -35,8 +36,7 @@ commands =
     sphinx-build -W -b doctest -d {envtmpdir}/doctrees docs docs/_build/html
     doc8 docs README.rst --ignore-path docs/_build/html
     sphinx-build -W -b linkcheck -d {envtmpdir}/doctrees docs docs/_build/linkcheck
-    python setup.py sdist
-    twine check dist/*
+    python -m twine check --strict {distdir}/*
 
 [testenv:watch-docs]
 deps =
@@ -85,13 +85,10 @@ commands =
     towncrier {posargs}
 
 [testenv:release]
-# disabled for twine to cause it to upload itself
-# skip_install = True
 # specify Python 3 to use platform's default Python 3
 basepython = python3
 deps =
-    pep517>=0.5
-    twine>=1.13
+    build
     path.py
 passenv =
     TWINE_PASSWORD
@@ -100,7 +97,7 @@ setenv =
     TWINE_USERNAME = {env:TWINE_USERNAME:__token__}
 commands =
     python -c "import path; path.Path('dist').rmtree_p()"
-    python -m pep517.build .
+    python -m build
     python -m twine upload dist/*
 
 [testenv:devpi]