[debian] erreur lors de la construction du paquet debian

https://jenkins.intra.logilab.fr/view/Pkg/job/pkg-from-dsc/1460/console

creating build
creating build/scripts-3.7
copying and adjusting bin/logilab-pytest -> build/scripts-3.7
changing mode of build/scripts-3.7/logilab-pytest from 664 to 775
   debian/rules override_dh_auto_test
make[1]: Entering directory '/<<PKGBUILDDIR>>'
tox -e py3
make[1]: tox: Command not found
make[1]: *** [debian/rules:27: override_dh_auto_test] Error 127
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:14: build] Error 2

voir ligne 27 du debian/control