Using an external ivy.xml file with property placeholders

[Matthieu Scholler]

I use SBT 0.13.

I have an external Ivy file using externalIvyFile(baseDirectory( _ / "ivy.xml")) in build.sbt.

In the ivy.xml there are property placeholders in the form of ${branch}. The values for these properties come from project.properties.

How do I tell sbt to use my project.properties to populate the placeholders?

(same question asked there where there is a bounty running at the moment)

Thanks for your help!