Use inv install instead of requirements.txt
Use inv install instead of requirements.txt

lsaffre/lino-welfare,lsaffre/lino-welfare,lsaffre/lino-welfare,lsaffre/lino-welfare,lino-framework/welfare,lino-framework/welfare,lino-framework/welfare,lino-framework/welfare,lino-framework/welfare,lsaffre/lino-welfare