nested module problem

[mw]

I run into a similar issue today:

-- I try to use a library `pyd`, and
-- my local project has a file called "source/util.d"

the dub build error out:

/.dub/packages/pyd-0.13.1/pyd/infrastructure/util/typelist.d(1,1): Error: package name 'util' conflicts with usage as a module name in file source/util.d


I wonder what's the best way to resolve this conflict, i.e my 
local file name with 3rd party library dir name.