In our codebase we needed to know which modules were the most depended on.

So, here it is, the inverse dependency tree, where:

account (13.0+c)
└── c (no version)
    └── a (13.0.1.0.0)

Reads "account is a dependence of c, and c is a dependence of a".

Changes made:

• Added the --inverse option to the tree command
• Added the parents field in the tree.Node class, which is populated in the tree.tree_command.add function
• The parents field is used instead of the children field in the tree.Node.print method when in inverse mode