Update package metadata

.github/workflows/tests.yaml

@@ -23,10 +23,9 @@ jobs:
           - {name: Mac, python: '3.9', os: macos-latest, tox: py39}
           - {name: '3.8', python: '3.8', os: ubuntu-latest, tox: py38}
           - {name: '3.7', python: '3.7', os: ubuntu-latest, tox: py37}
-          - {name: '3.6', python: '3.6', os: ubuntu-latest, tox: py36}
           - {name: '2.7', python: '2.7', os: ubuntu-latest, tox: py27}
-          - {name: 'PyPy2', python: 'pypy2', os: ubuntu-latest, tox: pypy}
-          - {name: 'PyPy3', python: 'pypy3', os: ubuntu-latest, tox: pypy3}
+          - {name: 'PyPy2', python: 'pypy-2.7', os: ubuntu-latest, tox: pypy}
+          - {name: 'PyPy3', python: 'pypy-3.8', os: ubuntu-latest, tox: pypy3}
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
@@ -44,6 +43,6 @@ jobs:
         uses: actions/cache@v2
         with:
           path: ${{ steps.pip-cache.outputs.dir }}
-          key: pip|${{ runner.os }}|${{ matrix.python }}|${{ hashFiles('setup.py') }}|${{ hashFiles('requirements/*.txt') }}
+          key: pip|${{ runner.os }}|${{ matrix.python }}|${{ hashFiles('pyproject.toml') }}|${{ hashFiles('requirements/*.txt') }}
       - run: pip install tox
       - run: tox -e ${{ matrix.tox }}

README.md

@@ -25,7 +25,7 @@ in the same spirit as — and yet conspicuously missing from —
 **[Full and extensive docs are available on Read The Docs.][rtd]** See
 what's new [by checking the CHANGELOG][changelog].
 
-Boltons is tested against Python 2.6, 2.7, 3.4, 3.5, 3.6, 3.7, 3.8 and 3.9, as well as CPython
+Boltons is tested against Python 2.7, 3.7, 3.8 and 3.9, as well as CPython
 _nightly_ and PyPy/PyPy3.
 
 [stdlib]: https://docs.python.org/2.7/library/index.html

RELEASE.md

@@ -0,0 +1,24 @@
+# Release
+
+-----
+
+Requirements:
+
+- `pip install -U build tox twine`
+
+A brief checklist for release:
+
+- `tox`
+- `git commit` (if applicable)
+- bump `boltons/__init__.py` version off of -dev
+- `git commit -a -m "bump version for x.y.z release"`
+- `python -m build`
+- `twine upload dist/*`
+- bump `docs/conf.py` version
+- `git commit`
+- `git tag -a x.y.z -m "brief summary"`
+- write `CHANGELOG.md`
+- `git commit`
+- bump `boltons/__init__.py` version onto n+1 dev
+- `git commit`
+- `git push`

boltons/__init__.py

@@ -0,0 +1 @@
+__version__ = '22.0.0dev'

pyproject.toml

@@ -0,0 +1,53 @@
+[build-system]
+requires = [
+    "hatchling>=0.17.0",
+]
+build-backend = "hatchling.build"
+
+[project]
+name = "boltons"
+description = "When they're not builtins, they're boltons."
+readme = "README.md"
+license = "BSD-3-Clause"
+authors = [
+    { name = "Mahmoud Hashemi", email = "[email protected]" },
+]
+# https://pypi.org/classifiers/
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: BSD License",
+    "Operating System :: OS Independent",
+    "Topic :: Software Development :: Libraries",
+    "Topic :: Utilities",
+    # List of python versions and their support status:
+    # https://en.wikipedia.org/wiki/History_of_Python#Table_of_versions
+    "Programming Language :: Python :: 2",
+    "Programming Language :: Python :: 2.7",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Programming Language :: Python :: Implementation :: PyPy",
+]
+dynamic = [
+    "version",
+]
+
+[project.urls]
+Homepage = "https://github.com/mahmoud/boltons"
+
+[tool.hatch.version]
+path = "boltons/__init__.py"
+
+[tool.hatch.build.targets.sdist]
+include = [
+    "/boltons",
+    "/docs",
+    "/tests",
+    "/CHANGELOG.md",
+    "/TODO.rst",
+    "/pytest.ini",
+    "/tox.ini",
+]

tox.ini

@@ -1,5 +1,6 @@
 [tox]
-envlist = py27,py34,py37,py39,pypy
+isolated_build = true
+envlist = py27,py37,py39,pypy
 [testenv]
 changedir = .tox
 deps = -rrequirements-test.txt