Hi there, I am trying to build hat using ghc6.4.1 with windows/cygwin. I also tried nhc, but with the same error. ./configure works fine, but "make" exits with the following error: Warning: package(s) base not available (according to ghc-pkg) Can't find module lang in user directories . . ../compiler98 Or in installed libraries/packages at Asked for by: commandline Fix using the -I, -P, or -package flags. Stop - hmake dependency error. make[1]: *** [c:/dev/hat-2.04/lib/ix86-CYGWIN_NT-5.1/hat-trans.exe] Error 255 make[1]: Leaving directory `/cygdrive/c/dev/hat-2.04/src/hattrans' make: *** [targets/ix86-CYGWIN_NT-5.1/hat-trans-ghc] Error 2 Any ideas? Thanks, Klaus P.S.: It would be great if you could add binaries to your download section