Prerequisites
~~~~~~~~~~~~~
To compile this code, you need a Haskell compiler.  If you have none, go to
<http://haskell.org/ghc/> to download and install one.  (Alternatively, many
GNU/Linux distributions provide ready-to-install Haskell systems; eg, on Fedora
Core, `yum install ghc' will get the Glasgow Haskell Compiler from Fedora
Extras.)

lambdaFeed is written in Haskell 98; ie, it should work with any Haskell
system that supports the hierarchical libraries and on any operating system.
However, I have only tested it with the Glasgow Haskell Compiler (GHC) on
GNU/Linux.  I'd appreciate any comments or patches concerning use with other
Haskell systems and operating systems.

Compilation and Installation
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
lambdaFeed uses a Cabal-based <http://haskell.org/cabal/> build system; i.e,
use the following sequence of commands to compile and install sources obtained
from the darcs repository:

  % chmod a+x Setup.hs VersionTool.hs runLambdaFeed.hs
  % ./VersionTool.hs Config.hs
  % ./Setup.hs configure --prefix=INSTALL-DIRECTORY
  % ./Setup.hs build
  % ./Setup.hs install

Alternatively, you can simply invoke `runLambdaFeed.hs' inplace - after adding
execute permissions and running `VersionTool.hs' as above.  (This will use 
interpreted, rather than compiled code, and hence be significantly slower.)