How to Build a Bill of Materials Module for Your Android Library

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A Bill of Materials (BOM) allows Android developers to declare a single version in their build file and receive a set of libraries guaranteed to work together, eliminating version-compatibility guesswork. While developers routinely consume BOMs like Firebase or Jetpack Compose, creating one for a multi-module library is far less common but surprisingly simple. The foundation of any BOM is Maven coordinates — a Group ID, Artifact ID, and Version (GAV) — which uniquely identify every library published to a Maven repository. A BOM itself is defined using a POM (Project Object Model) XML file, which describes library metadata and dependencies without requiring any source code or compiled binaries. Understanding how POM files map to GAV coordinates is the key first step toward publishing a custom BOM for library consumers.

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