File transformations before packaging WSP

Question

I need to modify the content of some files in my SP 2010 project before packaging, something like Web.Config transformations.

I need a file to have different content based on the environment: Debug, Staging, Release.

What are my options aside pre-build event command line in the build events?

Answer 1

I eventually used MSBuild to intervene before the WSP packaging step (step 3 from here).

What you will need is the AfterLayout step. An explanation on Integrating post-processors in SharePoint builds you can find here.