technomancy/leiningen — pull request #1341 by llasram (2013-10-07 19:08:36+00:00)
Title: More nuanced merging of project defaults.

Add new internal `::default` project entry metadata tag. Items tagged as `::default` are displaced from the right. Any non-displaced `::default` items have their `::default` tags removed. This allows switching the project -> default merge to `meta-merge` by marking the defaults project settings should entirely override as `::default`.