Add "news" environment to tox

Moving to a model where dependencies are provided by `tox` as needed
where possible.

1 files changed, 9 insertions, 0 deletions

diff --git a/tox.ini b/tox.ini
index 3b126f7..b1b7a1b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -78,6 +78,15 @@ commands = sphinx-build -d "{toxworkdir}/docs_doctree" docs "{toxworkdir}/docs_o
            sphinx-build -d "{toxworkdir}/docs_doctree" docs "{toxworkdir}/docs_out" {posargs:-W --color -blinkcheck}
            python setup.py check -r -s
 
+
+[testenv:news]
+description = Invoke towncrier to update the NEWS file
+basepython = python3.7
+passenv = *
+deps = towncrier
+commands =
+    towncrier {posargs}
+
 [testenv:build]
 description = Build an sdist and bdist
 basepython = python3.7