write a plugin sbt-appengine with dependency to xsbt-web-plugin as follows:
addSbtPlugin("com.github.siasia" %% "xsbt-web-plugin" % "0.1.2")
resolvers += "Web plugin repo" at "http://siasia.github.com/maven2"
pom does not contain the de-sugared name, so it does not get resolved:
as the result, build using sbt-appengine fails without explicitly adding xsbt-web-plugin.
IMPORTANT This project has moved to https://github.com/sbt/sbt. This issue still exists to avoid dead links, but GitHub limitations prevent the original issue from being correctly preserved here. Please see sbt/sbt#212 for the full issue and to comment.