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The following is a wiki page to centralize discussion of how to improve Haskell on Mac OS X. The name 'strike force' comes from dons' post on reddit and the comments therein.

• 1Goals
  • 1.2Make GUI-bindings easy to install
• 2Information
  • 2.2Installing Haskell

Goals

Take care of the Haskell Platform installer

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The Haskell Platform installer is now maintained by Mark Lentczner. The build is now a Makefile that is part of the Haskell Platform source tree.

• what are the most pressing things on the todo list?
  • script a reliable uninstaller for prior versions
  • work out how to suport: { 10.5 10.6 10.7 } × { 32bit 64bit } × { Xcode 3.2 Xcode 4.1 } with as few versions as possible.

This is done in version 2011.4.0.0 of the Haskell Platform

Make GUI-bindings easy to install

Neither wxHaskell nor Gtk2hs with native Gtk seems to be easy to install.What's the state of HQK and qtHaskell?

• We should provide at least one easy way to install one set of GUI bindings

wxHaskell

wxHaskell got a lot easier to install in April 2012, with the 0.90release. See WxHaskell/Mac for details. Should be just a matterof a little homebrew and cabal install wx.

Note that using MacPorts is problematic because of iconv-relatedissues that various people have reported on the mailing list.I doubt qtHaskell is immune from this.

IMHO, it could be worthwhile to point people to a standard wxWidgetspkg.

qtHaskell

qtHaskell with i386 ghc can be compiled with the following steps:

• Install Qt via MacPorts with the universal option set.
• Install Perl 5.12 via MacPorts.
• qmake will default to building x86_64 binaries, which does not work with 32-bit ghc. Modify /opt/local/libexec/qt4-mac/mkspecs/macx-g++/qmake.conf, adding the following lines:

• You could also create your own spec (macx-g++-i386?), and modify build.pl in the qtHaskell top-level directory to use this spec.
• Build qtHaskell by executing the build script in the top-level directory.

Make GHC 64 bit

Mac OS X GHC Trac tickets:

• [2965] is the main ticket, with lots of CC: people
• [4163] gives some cross-compiling hope

Reduce the number of GHC tickets

• All Mac OS X GHC Trac tickets

Information

Wiki

Installing Haskell

How Haskell is on OS X today

The simplest methods are currently:

• Binary GHC framework (/Library/Framework)
• Binary Haskell platform framework (/Library/Framework)
• MacPorts (/opt/local)
• Fink (/sw)
• Homebrew (symlinked into /usr/local ?)

Manually compiled

ChrisKuklewicz 11:53, 6 September 2010 (UTC) I use MacPorts for the infrastructure and compile ghc against /opt/local but with --prefix=/opt/ghc-6.12.3 to keep it separate.

Dynamic Linking

working in GHC HEAD, not in any released version.

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Difficult libraries on OS X

Libraries needed for ghc

• iconv (older version in /usr is incompatible with new version from MacPorts)
• readline (faked in /usr, provided by framework or MacPorts)
• gmp (framework or MacPorts)

Libraries needed for other packages? gtk?

OS X code integration

Write Haskell in XCode?

Write ObjectiveC against GHC.Framework?

FFI for Objective C from Haskell?

Improvements?

A cabal2pkg that maintains proper dependency tracking?

Discussion forum for all this?

You can discuss it on Haskellers at [1]