Migrate from pbr to hatch

.github/workflows/test.yml

@@ -33,7 +33,7 @@ jobs:
       - name: Install dependencies
         run: |
           python3 -m pip install --upgrade pip
-          python3 -m pip install --upgrade setuptools wheel
+          python3 -m pip install --upgrade setuptools wheel setuptools_scm
           python3 -m pip install sphinx
           python3 -m pip install ".[test,twisted]"
 

.gitignore

@@ -21,3 +21,6 @@ AUTHORS
 ChangeLog
 .idea
 .tox
+testtools/_version.py
+man/testtools.1
+man

pyproject.toml

@@ -8,6 +8,74 @@ module = [
     "fixtures.*",
     "testresources.*",
     "testscenarios.*",
-    "pbr.*",
 ]
 ignore_missing_imports = true
+
+[build-system]
+requires = ["setuptools>=61"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "testtools"
+description = "Extensions to the Python standard library unit testing framework"
+readme = "doc/overview.rst"
+authors = [{name = "Jonathan M. Lange", email = "jml+testtools@mumak.net"}]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Programming Language :: Python :: Implementation :: PyPy",
+    "Topic :: Software Development :: Libraries",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Topic :: Software Development :: Testing",
+]
+dependencies = ["setuptools; python_version>='3.12'"]
+dynamic = ["version"]
+requires-python = ">=3.7"
+
+[project.urls]
+Homepage = "https://github.com/testing-cabal/testtools"
+
+[tool.setuptools]
+include-package-data = false
+
+[tool.setuptools.packages.find]
+include = ["testtools"]
+exclude = ["man*"]
+
+[tool.extras]
+test = """
+testscenarios
+testresources"""
+twisted = """
+Twisted"""
+
+[tool.files]
+packages = "testtools"
+
+[tool.hatch.version]
+source = "vcs"
+
+[tool.hatch.build.hooks.vcs]
+version-file = "testtools/_version.py"
+tag-pattern = "^(testtools-)?(?P<version>[0-9]+(\\.[0-9]+)*(-[0-9]+)?)(\\.post(?P<post>[0-9]+))?$"
+template = """\
+# This file is automatically generated by hatch.
+version = {version!r}
+__version__ = {version_tuple!r}
+"""
+
+[project.optional-dependencies]
+test = ["testscenarios", "testresources"]
+twisted = ["Twisted", "fixtures"]

requirements.txt

@@ -1,2 +1 @@
-pbr>=0.11
 fixtures>=2.0

setup.py

@@ -1,7 +1,4 @@
 #!/usr/bin/env python
 import setuptools
 
-setuptools.setup(
-    python_requires='>=3.7',
-    setup_requires=['pbr'],
-    pbr=True)
+setuptools.setup()

testtools/__init__.py

@@ -42,6 +42,8 @@
     'TimestampingStreamResult',
     'try_import',
     'unique_text_generator',
+    'version',
+    '__version__',
     ]
 
 from testtools.helpers import try_import
@@ -107,7 +109,22 @@
 # established at this point, and setup.py will use a version of next-$(revno).
 # If the releaselevel is 'final', then the tarball will be major.minor.micro.
 # Otherwise it is major.minor.micro~$(revno).
-from pbr.version import VersionInfo
-_version = VersionInfo('testtools')
-__version__ = _version.semantic_version().version_tuple()
-version = _version.release_string()
+
+try:
+    # If setuptools_scm is installed (e.g. in a development environment with
+    # an editable install), then use it to determine the version dynamically.
+    from setuptools_scm import get_version
+
+    # This will fail with LookupError if the package is not installed in
+    # editable mode or if Git is not installed.
+    version = get_version(root="..", relative_to=__file__)
+    __version__ = tuple(version.split('.'))
+except (ImportError, LookupError):
+    # As a fallback, use the version that is hard-coded in the file.
+    try:
+        from ._version import (__version__, version)
+    except ModuleNotFoundError:
+        # The user is probably trying to run this without having installed
+        # the package, so complain.
+        raise RuntimeError(
+            "Testtools is not correctly installed. Please install it with pip.")

testtools/tests/twistedsupport/test_matchers.py

@@ -3,7 +3,6 @@
 """Tests for Deferred matchers."""
 
 from testtools.content import TracebackContent
-from testtools.helpers import try_import
 from testtools.matchers import (
     AfterPreprocessing,
     Equals,
@@ -13,13 +12,10 @@
 from ._helpers import NeedsTwistedTestCase
 
 
-has_no_result = try_import('testtools.twistedsupport.has_no_result')
-failed = try_import('testtools.twistedsupport.failed')
-succeeded = try_import('testtools.twistedsupport.succeeded')
+from testtools.twistedsupport import has_no_result, failed, succeeded
 
-
-defer = try_import('twisted.internet.defer')
-Failure = try_import('twisted.python.failure.Failure')
+from twisted.internet import defer
+from twisted.python.failure import Failure
 
 
 def mismatches(description, details=None):

tox.ini

@@ -6,6 +6,8 @@ minversion = 1.6
 usedevelop = True
 deps =
   sphinx
+  setuptools>=61
+  setuptools-scm
 extras =
   test
   twisted