Hello, My usb package fails to build on hackage: http://hackage.haskell.org/package/usb-0.2 usb depends both on bytestring and text but text also depends on bytestring. Now, during configuring, a different bytestring version is choosen than the one text was build with: http://hackage.haskell.org/packages/archive/usb/0.2/logs/failure/ghc-6.10 ... Dependency bytestring ==0.9.*: using bytestring-0.9.1.5 Dependency text ==0.4.*: using text-0.4 Warning: This package indirectly depends on multiple versions of the same package. This is highly likely to cause a compile failure. ... http://hackage.haskell.org/packages/archive/text/0.4/logs/success/ghc-6.10 ... Dependency bytestring >=0.9 && <1.0: using bytestring-0.9.1.4 ... Is it possible to specify in my cabal file that I depend on the same bytestring version as to one text was build with? If not, what is the best way to get my package to build on hackage? Thanks, Bas