When an old compiler is removed, all the packages compiled for it can be easily removed too.

All packages for a given compiler are under a single directory.You must replace that with /Users/xxx where xxx is your account name. Cabal configuration files don't actually support ~.Prefix: /Library/Haskell/$compiler/lib/$pkgid Prefix: ~/Library/Haskell/$compiler/lib/$pkgid This can be achieved with the following cabal configuration defaults: Share - data files ($datadir, $datadir/$datasubdir) hi files ($libdir, $libdir/$libsubdir, $dynlibdir) These combine to enable theĬhoice of package layout to be largely to serve the user.įor both -global and -user installs, this is the recommended package layout on Mac OS X:

The GHC package system is rather agnostic about where these pieces are,Īnd insulates the implementation from such differences. User installed packages are placed under a 'prefix' that depends on if the userĬhoose to install for all users ( -global) for just their own use ( -user):Ĭabal offers a large amount of flexibility in where the various pieces of a packageĪre installed. Not all software for Mac OS X offers a 'per user' option on installation, and while If implementations want to be able to be installed 'per user', then the above Which can achieved in the normal way: Append the version number to the executableĪnd then symlink the 'bare' name to the most recent. Which can only be done by distinct naming, and the symlinks in /usr/bin (With the exception of multiple versions of GUI applications NB: These guidelines allow for multiple implementations and multiple If the implementation has any GUI applications, these are installed in: Packages that come with the implementation, are be located within the Framework Library/Frameworks/GHC.framework/Versions/7.0.2-i386Įxecutables intended for use from the command line, are be symlink'd into:

These are packaged using Apple's framework, versioning, and bundling They consist of large collections of executables, libraries, and otherįiles. Haskell implementations are generally installed for use by all accounts on the

Pathway for mac instal