Srcdeps is a tool to build Maven dependencies from their sources. With srcdeps, wildfly-core can depend on a specific commit of, e.g., undertow:

<version.io.undertow>1.4.8.Final-SRC-revision-aabbccd</version.io.undertow>

where aabbccd is the git commit id to build when any undertow artifact is requested during the build of wildfly-core.

The main advantage of srcdeps is that changes in components can be integrated and tested in wildfly-core immediately after they are committed to a public component branch. There is no need to wait for the component release.

[1] https://github.com/srcdeps/srcdeps-maven#srcdeps-maven