cubicweb #17258396 Issue with pytest discovery on cubicweb 3.27rc1 (missing dependency on mako) [resolved]

I had this bug while running a test suite with cubicweb 3.27.0rc1

____________________ ERROR collecting test/unittest_api.py _____________________

ImportError while importing test module '/home/jenkins/agent/workspace/transdev-web/test/unittest_api.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
.tox/py3/lib/python3.5/site-packages/_pytest/python.py:492: in _importtestmodule
mod = self.fspath.pyimport(ensuresyspath=importmode)
.tox/py3/lib/python3.5/site-packages/py/_path/local.py:701: in pyimport
__import__(modname)
.tox/py3/lib/python3.5/site-packages/_pytest/assertion/rewrite.py:143: in exec_module
exec(co, module.__dict__)
test/unittest_api.py:20: in <module>
from cubicweb.pyramid.test import PyramidCWTest
.tox/py3/lib/python3.5/site-packages/cubicweb/pyramid/__init__.py:31: in <module>
from cubicweb.pyramid.debug_source_code import debug_display_source_code, DEBUG_DISPLAY_SOURCE_CODE_PATH
.tox/py3/lib/python3.5/site-packages/cubicweb/pyramid/debug_source_code.py:31: in <module>
from mako.template import Template
E ImportError: No module named 'mako'
priorityimportant
typebug
done in3.27.0
load left0.000
closed by<not specified>
assigned to