I'm trying to build cabal-1.6.0.1 with ghc-6.6.1 on WinXP. "setup -v configure" fails with this output: Configuring Cabal-1.6.0.1... Flags chosen: base3=False, base4=False Dependency base <3: using base-2.1.1 Dependency filepath >=1 && <1.2: using filepath-1.0 Using Cabal-0 compiled by ghc-6.6 Using compiler: ghc-6.6.1 Using install prefix: C:\Program Files\Haskell Binaries installed in: C:\Program Files\Haskell\bin Libraries installed in: C:\Program Files\Haskell\Cabal-1.6.0.1\ghc-6.6.1 Private binaries installed in: C:\Program Files\Haskell\Cabal-1.6.0.1 Data files installed in: C:\Program Files\Haskell\Cabal-1.6.0.1 Documentation installed in: C:\Program Files\Haskell\doc\Cabal-1.6.0.1 No alex found Using ar found on system at: c:\ghc\ghc-6.6.1\bin\ar.exe No c2hs found No cpphs found No ffihugs found Using gcc version 3.4.2 found on system at: c:\ghc\ghc-6.6.1\gcc.exe Using ghc version 6.6.1 found on system at: c:\ghc\ghc-6.6.1\bin\ghc.exe Using ghc-pkg version 6.6.1 found on system at: c:\ghc\ghc-6.6.1\bin\ghc-pkg.exe No greencard found No haddock found No happy found No hmake found Using hsc2hs version 0.66 found on system at: c:\ghc\ghc-6.6.1\bin\hsc2hs.exe No hscolour found No hugs found No jhc found Using ld found on system at: c:\ghc\ghc-6.6.1\gcc-lib\ld.exe No nhc98 found No pkg-config found No ranlib found No strip found No tar found setup: fdGetMode: invalid argument (Invalid argument) Any clues as to what might be wrong? There are no buildinfo files produced, so I can't just ignore and proceed with setup build. Alistair