In a web browser, Click on the download button at: https://www.weechat.org/scripts/source/stable/shell.py.html/ Make the script executable by chmod +x shell.py Move it to your home folder: /.weechat/python/autoload/ then logout, and start WeeChat with weechat-curses Top of screen should say what pythons scripts have loaded, and should include shell. Uninstall sysvinit-core and it’s dependent packages. To remove the sysvinit-core package and any other dependant package which are no longer needed from Debian Sid. sudo apt-get remove --auto-remove sysvinit-core Purging sysvinit-core. If you also want to delete configuration and/or data files of sysvinit-core from Debian Sid then this will work: