Component/s: Package Manager
Tested with the 05-09 and 06-06 snapshots, along with the Xcode 8.0 Swift preview. Can reproduce on all of them. Also fails on Linux (tested in a Ubuntu 14.04 docker container).
Steps to reproduce:
Breaks with other similar-style c packages as well ([Clibbson](https://github.com/danappelxx/clibbson), [CMysql](https://github.com/zewo/cmysql)); but doesn't break with packages that have C sources ([CLibvenice](https://github.com/venicex/clibvenice), [CHTTPParser](https://github.com/zewo/chttpparser)).