This is tangobos, Gregor's Phobos-compatibility layer for Tango.

This version is based on Phobos 1.021. You'll need to have a Tango capable of
-version=PhobosCompatibility. You can either build this with dsss, or just
-I<tangobos' path>

If you're using rebuild (with or without DSSS), make sure you're using one of
the -tango profiles: dmd-win-tango, dmd-posix-tango, gdc-win-tango, or
gdc-posix-tango. This can be changed in your /etc/rebuild/default file or on
the command line with -dc=<compiler>-<platform>-tango.

If you're not using DSSS (and it's highly recommended that you DO use DSSS),
you must make sure to include Tangobos BEFORE Tango in your include paths.