/usr/lib/ubiquity/plugins/ubi-tasks.py is in ubiquity 18.04.14.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (C) 2009 Canonical Ltd.
# Written by Colin Watson <cjwatson@ubuntu.com>.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import debconf
from ubiquity import plugin
NAME = 'tasks'
AFTER = 'network'
WEIGHT = 12
class TasksUnfilteredOnly(Exception):
pass
class PageDebconf(plugin.PluginUI):
plugin_title = 'ubiquity/text/tasks_heading_label'
# Only supports unfiltered mode.
class Page(plugin.Plugin):
def prepare(self, unfiltered=False):
if not unfiltered:
raise TasksUnfilteredOnly(
"tasks component only usable with debconf frontend")
command = ['tasksel']
if self.is_automatic:
# In automatic mode, we have a quandary. tasksel without
# --new-install is not preseedable, but with --new-install it
# was designed to run on top of a simple base system and it's
# possible that it will remove tasks that aren't explicitly
# specified. Furthermore, --new-install would be bad outside
# automatic mode because it's quite possible that a preseeded
# value for tasksel/first will have been carried over from
# initial installations using d-i. However, if you're in
# automatic mode and you've preseeded tasksel/first then that's
# a fairly good sign that you actually wanted to preseed tasksel
# in oem-config, so in that specific case let's go ahead and use
# --new-install.
try:
if self.db.fget('tasksel/first', 'seen') == 'true':
command.append('--new-install')
except debconf.DebconfError:
pass
return command
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