# Setup configure Configuring containers-dupe-0.1.0.0... # Setup build Preprocessing library for containers-dupe-0.1.0.0.. Building library for containers-dupe-0.1.0.0.. # Setup copy Installing library in # Setup register Registering library for containers-dupe-0.1.0.0.. # Setup configure Configuring p-0.1.0.0... Error: Problem with module re-exports: - Ambiguous reexport 'Data.Map' It could refer to either: 'containers-:Data.Map' brought into scope by build-depends: containers or 'containers-dupe-0.1.0.0:Data.Map' brought into scope by build-depends: containers-dupe The ambiguity can be resolved by qualifying the re-export with a package name. The syntax is 'packagename:ModuleName [as NewName]'. In the stanza library