build: .ignore is a standard way to control searching

Author: nedbat

.ignore

@@ -0,0 +1,25 @@
+# .ignore for coverage: controls what files get searched.
+build/
+htmlcov/
+html0
+.tox*
+.coverage*
+.metacov
+coverage.json
+coverage.xml
+coverage.lcov
+*.min.js
+style.css
+gold/
+sample_html/
+sample_html_beta/
+*.so
+*.pyd
+*.gz
+*.zip
+_build/
+_spell/
+*.egg
+*.egg-info
+.*_cache
+tmp/

.treerc

@@ -10,6 +10,7 @@
 
 include .editorconfig
 include .git-blame-ignore-revs
+include .ignore
 include .pre-commit-config.yaml
 include .readthedocs.yaml
 include CHANGES.rst

MANIFEST.in

@@ -98,7 +98,7 @@ commands =
     python -m cogapp -cP --check --verbosity=1 doc/*.rst
     python -m cogapp -cP --check --verbosity=1 .github/workflows/*.yml
     python -m pylint -j 0 --notes= --ignore-paths 'doc/_build/.*' {env:LINTABLE}
-    check-manifest --ignore 'doc/sample_html/*,.treerc'
+    check-manifest --ignore 'doc/sample_html/*'
     # If 'build -q' becomes a thing (https://github.com/pypa/build/issues/188),
     # this can be simplified:
     python igor.py quietly "python -m build"