Python package to modify apt preferences files in line with https://manpages.debian.org/buster/apt/apt_preferences.5.en.html.
I don't like using awk and sed for updating preferences cause it's got messier the bigger amount of preferences is connected to a package.
If regexes are used in packages names then it's even harder. This package along with re should make more complex preferences scenarios easy to automate.
And I wanted to learn LARK so that is also a big pron of the project.
pip install apt_preferences
Create virtual environment
make venv
Activate virtual environment
. .venv/bin/activate
Install package
make install
from apt_preferences.data_structures import AptPreference
from apt_preferences.render_preferences_files import render_preferences_files
# lets assume this is a parsed preferences file
my_prefs_l = [AptPreference(package="*", pin="release n=jammy", pin_priority=700, file_path="/etc/apt/preferences", explanations={})]
# we would like to change pin priority for one of file preferences
my_pref = my_prefs_l[0]
# pin priority is modified
my_pref.pin_priority = 100
# preference with modified pin priority is saved to the file
render_preferences_files(my_prefs_l)
For more examples look into /examples directory.
Run example
python examples/read_preferences.py
- Parse apt preferences' files into Python objects list.
- Generate new apt preferences' files based on Python objects list.
- Support multiple pins in single preference.
- Comment out objects via AptPreference method.
- If a line starts with
#it will be ignored by the parser. - The generator doesn't allow creating lines starting with
#.
Me, Myself and I.
MIT License
Copyright (c) [2023] [Jakub Buczyński]
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