On Fri, 23 Aug 2013 05:42:12 GMT, Peter Williams wrote:

Although a legal directory name, "gtkd-2" causes problems for the import statement inside D source code as "-" cannot be included in a D identifier. Suggest that it be renamed "gtkd_2" instead.

Or alternatively, if the modules are intended to be imported without that prefix, the include files should be in /usr/include/gtkd-2 instead of /usr/include/d/gtkd-2.