Hi, Using GHC 6.4.2, Cabal from Darcs - every time I do runhaskell Setup build in Hoogle (the Hoogle cabal file isn't up on the web yet, but I'm working on it!) it does relinking. Trying -v I get the command: Building Hoogle-3.0... C:\ghc\ghc-6.4.2\bin\ghc.exe -Idist\build -o dist\build\hoogle\hoogle --make -hi de-all-packages -i -idist\build\autogen -isrc -odir dist\build\hoogle\hoogle-tmp Unfortunately GHC 6.4.2 has a bug in it that if the .exe is not specified in the -o it always relinks. Any chance Cabal can ++ executableExtension when passing onto the GHC? (I did take a look at writing a patch, but as far as I can see in Distribution.Simple.GHC, the file passed along to -o is created by mkGHCiLibName and should end in ".o", but it doesn't... If anyone can point me at where this should go, then maybe, just maybe...) Thanks Neil