Debian: 9.3
trac/stable,now 1.2+dfsg-1 all [installed]
python-mysqldb/stable,now 1.3.7-1.1 amd64 [installed]

Creating and Initializing Project
Initenv for '/usr/share/trac' failed.
Failed to create environment.
Unsupported database type "mysql"
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/trac/admin/console.py", line 497, in do_initenv
    options=options)
  File "/usr/lib/python2.7/dist-packages/trac/core.py", line 128, in __call__
    self.__init__(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/trac/env.py", line 299, in __init__
    self.create(options)
  File "/usr/lib/python2.7/dist-packages/trac/env.py", line 591, in create
    DatabaseManager(self).init_db()
  File "/usr/lib/python2.7/dist-packages/trac/db/api.py", line 337, in init_db
    connector, args = self.get_connector()
  File "/usr/lib/python2.7/dist-packages/trac/db/api.py", line 606, in get_connector
    scheme=scheme))
TracError: Unsupported database type "mysql"