Duncan, I got the latest cabal. The stack overflow is fixed. But the install command still does not work (on a very simple package). Attached is the verbose output. It does not like to proceed somewhere between configure and build. But the verbose is not telling why! I also attached my cabal dance with exactly the same configure options. ---- /home2/ecoin/garden> cabal install -v HTTP-Simple /home2/ecoin/ghc/bin/ghc --numeric-version looking for package tool: ghc-pkg near compiler in /home2/ecoin/ghc/bin found package tool in /home2/ecoin/ghc/bin/ghc-pkg /home2/ecoin/ghc/bin/ghc-pkg --version /home2/ecoin/ghc/bin/ghc -c /tmp/tmp26702.c -o /tmp/tmp26702.o /usr/bin/ld -x -r /tmp/tmp26702.o -o /tmp/tmp26703.o Reading installed packages... /home2/ecoin/ghc/bin/ghc-pkg list --global --user 'HTTP-Simple-0.1' is cached. Extracting /home2/ecoin/.cabal/packages/hackage.haskell.org/HTTP-Simple/0.1/HTTP -Simple-0.1.tar.gz to /tmp/TMPHTTP-Simple-0.1... Creating dist/setup (and its parents) /home2/ecoin/ghc/bin/ghc --make Setup.lhs -o dist/setup/setup -odir dist/setup - hidir dist/setup [1 of 1] Compiling Main ( Setup.lhs, dist/setup/Main.o ) Linking dist/setup/setup ... dist/setup/setup configure --verbose=2 --ghc --prefix=/home2/ecoin/htools --user cabal: Error: some packages failed to install: HTTP-Simple-0.1 ---- Configuring HTTP-Simple-0.1... Warning: No build-type specified. If possible use build-type: Simple Preprocessing library HTTP-Simple-0.1... Building HTTP-Simple-0.1... [1 of 1] Compiling Network.HTTP.Simple ( Network/HTTP/Simple.hs, dist/build/Netw ork/HTTP/Simple.o ) /usr/bin/ar: creating dist/build/libHSHTTP-Simple-0.1.a Installing: /home2/ecoin/htools/lib/HTTP-Simple-0.1/ghc-6.6.1 Registering HTTP-Simple-0.1... Reading package info from "dist/installed-pkg-config" ... done. Saving old package config file... done. Writing new package config file... done.