Fix lint.

.meta.toml

@@ -2,7 +2,7 @@
 # https://github.com/zopefoundation/meta/tree/master/config/zope-product
 [meta]
 template = "zope-product"
-commit-id = "fba6d957ba447b6fa369d872e803756bd5176391"
+commit-id = "3b712f305ca8207e971c5bf81f2bdb5872489f2f"
 
 [python]
 with-pypy = false

CONTRIBUTING.md

@@ -0,0 +1,23 @@
+<!--
+Generated from:
+https://github.com/zopefoundation/meta/tree/master/config/zope-product
+--> 
+# Contributing to zopefoundation projects
+
+The projects under the zopefoundation GitHub organization are open source and
+welcome contributions in different forms:
+
+* bug reports
+* code improvements and bug fixes
+* documentation improvements
+* pull request reviews
+
+For any changes in the repository besides trivial typo fixes you are required
+to sign the contributor agreement. See
+https://www.zope.dev/developer/becoming-a-committer.html for details.
+
+Please visit our [Developer
+Guidelines](https://www.zope.dev/developer/guidelines.html) if you'd like to
+contribute code changes and our [guidelines for reporting
+bugs](https://www.zope.dev/developer/reporting-bugs.html) if you want to file a
+bug report.

MANIFEST.in

@@ -1,5 +1,6 @@
 # Generated from:
 # https://github.com/zopefoundation/meta/tree/master/config/zope-product
+include *.md
 include *.rst
 include *.txt
 include buildout.cfg

tox.ini

@@ -18,10 +18,11 @@ envlist =
 
 [testenv]
 skip_install = true
-# We need to pin setuptools until we have zc.buildout 3.0.
+# We need to pin setuptools < 60 until zc.buildout 3.x supports it.
 deps =
-    setuptools < 52
-    zc.buildout
+    setuptools < 60
+    zc.buildout==3.0.0rc2
+    wheel > 0.37
 commands_pre =
     py27,py35: {envbindir}/buildout -nc {toxinidir}/buildout4.cfg buildout:directory={envdir} buildout:develop={toxinidir} install test
     !py27-!py35: {envbindir}/buildout -nc {toxinidir}/buildout.cfg buildout:directory={envdir} buildout:develop={toxinidir} install test
@@ -48,7 +49,7 @@ allowlist_externals =
     mkdir
 commands =
     isort --check-only --diff {toxinidir}/src {toxinidir}/setup.py
-    - flake8 --format=html {toxinidir}/src {toxinidir}/setup.py
+    - flake8 {toxinidir}/src {toxinidir}/setup.py
     flake8 {toxinidir}/src {toxinidir}/setup.py
     check-manifest
     check-python-versions
@@ -57,8 +58,6 @@ deps =
     check-python-versions
     flake8
     isort
-    # helper to generate HTML reports:
-    flake8-html
     # Useful flake8 plugins that are Python and Plone specific:
     flake8-coding
     flake8-debugger