exclusion when dependency on other projects

[DavidPerezIngeniero]

I have this schema:

lazy val C = project
    .dependsOn(A, B).settings(
                (projectID in A).value
                    exclude("commons-logging", "commons-logging"),
                (projectID in B).value
                    exclude("commons-logging", "commons-logging")
                    exclude("commons-codec", "commons-codec"),
                        ....
        )

But sbt-pack processes commons-logging, even though there is no other source of it. I know because I'm using the dependencyTree task from this plugin:

addSbtPlugin("com.gilt" % "sbt-dependency-graph-sugar" % "0.7.4")

I expect commons-logging not to be copied with the C/pack task.