Graph Command Examples

This section provides examples and documentation for using fromager’s graph analysis commands to explore dependency graphs produced by builds.

All examples use the sample graph file e2e/build-parallel/graph.json which contains the dependency graph for building the imapautofiler package.

• Extracting Graph Subsets
• Understanding Multiple Package Versions in a Graph
• Understanding Why a Package is in the Graph
• Creating Visual Dependency Graphs

Overview of Graph Commands

The fromager graph command group provides several subcommands for analyzing dependency graphs:

• subset: Extract a focused subgraph containing only dependencies and dependents of a specific package

• why: Understand why a package appears in the dependency graph

• to-dot: Convert graph to DOT format for visualization with Graphviz

• explain-duplicates: Analyze multiple versions of packages in the graph

• to-constraints: Convert graph to constraints file format

• migrate-graph: Convert old graph formats to the current format

These tools help you understand complex dependency relationships, debug unexpected dependencies, create focused subgraphs for analysis, and create visual representations of your build requirements.