diff --git a/subiquity/models/installpath.py b/subiquity/models/installpath.py
index 5e814cb0..a366fd7f 100644
--- a/subiquity/models/installpath.py
+++ b/subiquity/models/installpath.py
@@ -46,34 +46,62 @@ class InstallpathModel(object):
         elif self.path == 'maas_region':
             self.source = '/media/region'
             self.curtin['debconf_selections'] = {
-                'maas-username': 'maas-region-controller maas/username string %s' % results['username'],
-                'maas-password': 'maas-region-controller maas/password password %s' % results['password'],
+                'maas-username': ('maas-region-controller maas/username '
+                                  'string %s' % results['username']),
+                'maas-password': ('maas-region-controller maas/password '
+                                  'password %s' % results['password']),
             }
             self.curtin['late_commands'] = {
-                # Maintainer scripts cache results, from config files, if they exist
-                # These shouldn't exist, since this was fixed in livecd-rootfs
-                # but remove these, just to be sure
+                # Maintainer scripts cache results, from config files, if they
+                # exist.  These shouldn't exist, since this was fixed in
+                # livecd-rootfs but remove these, just to be sure.
                 '900-maas': ['rm', '-f', '/target/etc/maas/rackd.conf'],
                 '901-maas': ['rm', '-f', '/target/etc/maas/region.conf'],
-                # All the crazy things are workarounds for maas maintainer scripts deficiencies
-                # see https://bugs.launchpad.net/ubuntu/+source/maas/+bugs?field.tag=subiquity
+                # All the crazy things are workarounds for maas maintainer
+                # scripts deficiencies see:
+                # LP: #1766209
+                # LP: #1766211
+                # LP: #1766214
+                # LP: #1766218
+                # LP: #1766241
                 #
-                # uuid is not initialized by reconfigure, maybe it should, if it is at all used
-                # make it so, to make it match the udeb/deb installs
-                '902-maas': ['curtin', 'in-target', '--', 'maas-rack', 'config', '--init'],
-                # this should do setups of maas-url for the rack controller, and secret if needed.
-                '903-maas': ['curtin', 'in-target', '--', 'dpkg-reconfigure', '-u', '-fnoninteractive', 'maas-rack-controller'],
-                # Below are workaround to make postgresql database running, and invoke-rc.d --force to not fail
-                # And a running postgresql is needed, to change the role password and to create an admin user
+                # uuid is not initialized by reconfigure, maybe it should,
+                # if it is at all used make it so, to make it match the
+                # udeb/deb installs
+                '902-maas': ['curtin', 'in-target', '--',
+                             'maas-rack', 'config', '--init'],
+                # this should do setups of maas-url for the rack controller,
+                # and secret if needed.
+                '903-maas': ['curtin', 'in-target', '--', 'dpkg-reconfigure',
+                             '-u', '-fnoninteractive', 'maas-rack-controller'],
+                # Below are workaround to make postgresql database running,
+                # and invoke-rc.d --force to not faill and a running postgresql
+                # is needed, to change the role password and to create an admin
+                # user.
                 '904-maas': ['mount', '-o', 'bind', '/proc', '/target/proc'],
                 '905-maas': ['mount', '-o', 'bind', '/sys', '/target/sys'],
                 '906-maas': ['mount', '-o', 'bind', '/dev', '/target/dev'],
-                '907-maas': ['mount', '-o', 'bind', '/target/bin/true', '/target/usr/sbin/invoke-rc.d'],
-                '908-maas': ['chroot', '/target', 'sh', '-c', 'pg_ctlcluster --skip-systemctl-redirect $(/bin/ls /var/lib/postgresql/) main start'],
-                # These are called like this, because reconfigure doesn't create nor change an admin user account, nor regens the semi-autogenerated maas-url
-                '909-maas': ['chroot', '/target', 'sh', '-c', 'debconf -fnoninteractive -omaas-region-controller /var/lib/dpkg/info/maas-region-controller.config configure'],
-                '910-maas': ['chroot', '/target', 'sh', '-c', 'debconf -fnoninteractive -omaas-region-controller /var/lib/dpkg/info/maas-region-controller.postinst configure'],
-                '911-maas': ['chroot', '/target', 'sh', '-c', 'pg_ctlcluster --skip-systemctl-redirect $(/bin/ls /var/lib/postgresql/) main stop'],
+                '907-maas': ['mount', '-o', 'bind', '/target/bin/true',
+                             '/target/usr/sbin/invoke-rc.d'],
+                '908-maas': ['chroot', '/target', 'sh', '-c',
+                             'pg_ctlcluster --skip-systemctl-redirect '
+                             '$(/bin/ls /var/lib/postgresql/) main start'],
+                # These are called like this, because reconfigure doesn't
+                # create nor change an admin user account, nor regens the
+                # semi-autogenerated maas-url
+                '909-maas':
+                    ['chroot', '/target', 'sh', '-c', (
+                        'debconf -fnoninteractive -omaas-region-controller '
+                        '/var/lib/dpkg/info/maas-region-controller.config '
+                        'configure')],
+                '910-maas':
+                    ['chroot', '/target', 'sh', '-c', (
+                        'debconf -fnoninteractive -omaas-region-controller '
+                        '/var/lib/dpkg/info/maas-region-controller.postinst '
+                        'configure')],
+                '911-maas': ['chroot', '/target', 'sh', '-c', (
+                        'pg_ctlcluster --skip-systemctl-redirect '
+                        '$(/bin/ls /var/lib/postgresql/) main stop')],
                 '912-maas': ['umount', '/target/usr/sbin/invoke-rc.d'],
                 '913-maas': ['umount', '/target/dev'],
                 '914-maas': ['umount', '/target/sys'],
@@ -82,16 +110,25 @@ class InstallpathModel(object):
         elif self.path == 'maas_rack':
             self.source = '/media/rack'
             self.curtin['debconf_selections'] = {
-                'maas-url': 'maas-rack-controller maas-rack-controller/maas-url string %s' % results['url'],
-                'maas-secret': 'maas-rack-controller maas-rack-controller/shared-secret password %s' % results['secret'],
+                'maas-url': ('maas-rack-controller '
+                             'maas-rack-controller/maas-url '
+                             'string %s' % results['url']),
+                'maas-secret': ('maas-rack-controller '
+                                'maas-rack-controller/shared-secret '
+                                'password %s' % results['secret']),
             }
             self.curtin['late_commands'] = {
                 '90-maas': ['rm', '-f', '/target/etc/maas/rackd.conf'],
-                '91-maas': ['curtin', 'in-target', '--', 'maas-rack', 'config', '--init'],
-                # maas-rack-controller is broken, and does db_input & go on the password question in the postinst...
-                # when it should have been done in .config
-                # and it doesn't gracefully handle the case of db_go returning 30 skipped
-                '93-maas': ['curtin', 'in-target', '--', 'sh', '-c', 'debconf -fnoninteractive -omaas-rack-controller /var/lib/dpkg/info/maas-rack-controller.postinst configure || :'],
+                '91-maas': ['curtin', 'in-target', '--', 'maas-rack',
+                            'config', '--init'],
+                # maas-rack-controller is broken, and does db_input & go on
+                # the password question in the postinst...  when it should have
+                # been done in .config and it doesn't gracefully handle the
+                # case of db_go returning 30 skipped
+                '93-maas': ['curtin', 'in-target', '--', 'sh', '-c',
+                            ('debconf -fnoninteractive -omaas-rack-controller '
+                             '/var/lib/dpkg/info/maas-rack-controller.postinst'
+                             ' configure || :')],
             }
         else:
             raise ValueError("invalid Installpath %s" % self.path)