Hi, I installed Haskell Platform 32-bit on a fresh 64-bit mac, because the page http://www.haskell.org/platform/mac.html says: "Pick the 32-bit vesion, unless you have a specific reason to use the 64-bit version. The 32-bit one is slightly faster for most programs." Then, during the installation of a package, the following happeed: Loading package cairo-0.12.3.1 ... <command line>: can't load .so/.DLL for: /opt/local/lib/libz.dylib (dlopen(/opt/local/lib/libz.dylib, 9): no suitable image found. Did find: /opt/local/lib/libz.dylib: mach-o, but wrong architecture) That libz.dylib is a 64-bit library and it can't be used by 32-bit Haskell platform. QUESTION: It seems to me that most people, at least most who care about "slightly faster" programs, are likely to run into something like this - using native 64-bit libraries. Compatibility exists only in the opposite direction. Wouldn't it be appropriate to remove this notice and ask people to use the 64-bit version unless they have a specific reason not to? -- Eugene Kirpichov http://www.linkedin.com/in/eugenekirpichov We're hiring! http://tinyurl.com/mirantis-openstack-engineer