chore: add check-manifest

.hgignore

 syntax: glob
 .tox
 *.egg-info
+*.pyc
+__pycache__

MANIFEST.in

@@ -5,6 +5,9 @@ recursive-include cubicweb_rqlcontroller *
 recursive-include cubicweb_rqlcontroller/data *.gif *.png *.ico *.css *.js
 recursive-include cubicweb_rqlcontroller/i18n *.po
 recursive-include cubicweb_rqlcontroller/wdoc *
+
+prune test
+exclude tox.ini
 exclude .cube-doctor.yml
 exclude .gitlab-ci.yml
 exclude .gitlab-ci-extended.yml

tox.ini

 [tox]
-envlist = py3,flake8
+envlist = py3,flake8,check-manifest
 
 [testenv]
 deps =
@@ -16,6 +16,13 @@ deps =
 commands =
     {envpython} -m flake8 {toxinidir}
 
+[testenv:check-manifest]
+skip_install = true
+deps =
+  check-manifest
+commands =
+  {envpython} -m check_manifest {toxinidir}
+
 [pytest]
 python_files = *test_*.py