Re: [Haskell-cafe] unable to load package `regex-posix-0.94.2' (On Vista x64)

I think broken posix-regex is a known issue with the last release of the Platform on Windows. Although I haven't tried myself, I think it can be fixed by upgrading with cabal - although regex-posix is a FFI binding, in this case all the parts (headers and C library) are bundled with the platform so it doesn't need Cygwin or MinGW / MSys.