Module lists 

Management of install, remove, and downgrade package lists.

Functions

add_to_downgrade_list

What: Add a PackageItem to the downgrade list if it is not already present.

add_to_install_list

What: Add a PackageItem to the install list if it is not already present.

add_to_remove_list

What: Add a PackageItem to the remove list if it is not already present.