A dependency graph represents requirements as a directed graph. Choose an explicit edge convention: here means that component requires component . A direct edge records an immediate requirement; a directed path records a transitive requirement. Pip's resolver must discover both a requested software package's requirements and the requirements of its dependencies.[ref]
For example, if application requires software library and requires , changing can affect even without an edge . In an acyclic build dependency graph, a topological order of the reversed edges puts prerequisites first. Cycles require special treatment: the graph alone does not establish that a set of mutually dependent build steps can execute. Edge labels can additionally record required versions or build configurations.
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A **dependency graph** is a directed graph that represents dependencies between a set of items, where nodes represent the items and directed edges indicate a dependency from one item to another. In other words, if item A has a directed edge to item B, it means that A depends on B, or A cannot be completed until B has been completed.
