Hi! I tried to compile ghc from cvs head in windows, hosting and targetting mingw. When I got ghc to compile, it crashes while parsing (I putStrLn-debugged) package.conf, but only from installed position. Basically, somewhere inside ParsePkgConf.loadPackageConfig GHC crashes with access violation. With very few test runs, it appears that simplifying the file helps, but only case I got it not to crash was one package in file, rts, and empty ldOptions. Maybe I went wrong somewhere, any pointers appreciated! What I did: Current msys, msysdtk, binutils, win32api, gcc-core. cvs checkout fpconfig and in there ghc, libraries, alex and happy autoreconf ./configure --host=i386-unknown-mingw32 --with-gcc=d:/tools/msys/mingw/bin/gcc.exe make make install (I had to change some things, as described on mail to bugs-list, so few repeated make's) I will try clean rebuild later, but I feel doubtful. Best regards, --Esa