A couple of problems with Network.URI have been brought to my attention, so I thought I'd have a go at seeing if I could fix them. It's been a while (years) since I used the Haskell toolchain in anger, so I'm a bit out of touch with how thinks are working now. So far, I have: 1. Installed Haskell platform (64-bit version for MacOS). 2. Checked out the 'network' project from https://github.com/haskell/network 3. cabal install test-framework 4. cabal install test-framework-hunit 5. changed to the 'test' directory of the checked out 'network' project Then when I try to run GHC, I get this error: [[ conina:tests graham$ ghc -v -XDeriveDataTypeable ../Network/URI.hs uri001.hs Glasgow Haskell Compiler, Version 7.4.2, stage 2 booted by GHC version 7.0.4 Using binary package database: /Library/Frameworks/GHC.framework/Versions/7.4.2-x86_64/usr/lib/ghc-7.4.2/package.conf.d/package.cache Using binary package database: /Users/graham/.ghc/x86_64-darwin-7.4.2/package.conf.d/package.cache wired-in package ghc-prim mapped to ghc-prim-0.2.0.0-7d3c2c69a5e8257a04b2c679c40e2fa7 wired-in package integer-gmp mapped to integer-gmp-0.4.0.0-af3a28fdc4138858e0c7c5ecc2a64f43 wired-in package base mapped to base-4.5.1.0-81d626fb996bc7e140a3fd4481b338cd wired-in package rts mapped to builtin_rts wired-in package template-haskell mapped to template-haskell-2.7.0.0-29110cc89a711d6ab3e7ee0e0a8ee949 wired-in package dph-seq not found. wired-in package dph-par not found. Hsc static flags: -static *** Chasing dependencies: Chasing modules from: *../Network/URI.hs,*uri001.hs Created temporary directory: /tmp/ghc65140_0 *** C pre-processor: '/usr/bin/gcc' '-E' '-undef' '-traditional' '-m64' '-fno-stack-protector' '-m64' '-I' '/Library/Frameworks/GHC.framework/Versions/7.4.2-x86_64/usr/lib/ghc-7.4.2/base-4.5.1.0/include' '-I' '/Library/Frameworks/GHC.framework/Versions/7.4.2-x86_64/usr/lib/ghc-7.4.2/include' '-D__GLASGOW_HASKELL__=704' '-Ddarwin_BUILD_OS=1' '-Dx86_64_BUILD_ARCH=1' '-Ddarwin_HOST_OS=1' '-Dx86_64_HOST_ARCH=1' '-U __PIC__' '-D__PIC__' '-x' 'c' '../Network/URI.hs' '-o' '/tmp/ghc65140_0/ghc65140_0.hscpp' ../Network/URI.hs:135:0: error: missing binary operator before token "(" *** Deleting temp files: Deleting: /tmp/ghc65140_0/ghc65140_0.hscpp Warning: deleting non-existent /tmp/ghc65140_0/ghc65140_0.hscpp *** Deleting temp dirs: Deleting: /tmp/ghc65140_0 ]] The problem seems to be with the following lines in URI.hs (starting at line 135): [[ # if MIN_VERSION_base(4,0,0) import Data.Data (Data) # else import Data.Generics (Data) # endif ]] If I remove these lines, and just leave [[ import Data.Generics (Data) ]] I can compile and run the test suite just fine: [[ Test Cases Total Passed 319 319 Failed 0 0 Total 319 319 ]] I'm _guessing_ the problem here is something to do with "MIN_VERSION_base(4,0,0)" - not being familiar with the current build environment setup, I'm not sure where it is or should be defined, or what it is intended to mean. I did find these: * http://www.haskell.org/pipermail/haskell-cafe/2012-August/102787.html * http://stackoverflow.com/questions/8961413/zlib-build-error-with-ghc but they didn't help me. It seems there's a fix that involves using __GLASGOW_HASKELL__ instead of MIN_VERSION_base(4,0,0), but I'm not sure exactly how that would play out - or indeed if that's the correct approach for a permanent fix. Is there something else I should be doing to set up the development and test environment for this library module? Thanks for any pointers. #g --