ihaskell-notebook

The goal of the project is to enable evaluation of Haskell code in the IPython notebook and support rich display of output.

ihaskell-notebook is implemented as an IPython extention (a "cell magic") which connects to a Haskell application we're calling ghcj. This application use the GHC API directly to handle compilations, imports, and evaluation.

Requirements

You will need:

• IPython (tested with v0.13)

  See the install instructions here

• GHC

  The easiest way to get GHC is to install the Haskell Platform.

Usage

• Checkout this ihaskell-notebook repository

• chdir to ghcj and build, e.g.

  $ cd ghcj $ cabal-dev install

• modify the top-level script ihaskellnb.sh to reflect the location of ghcj binary

  GHCJ_BINARY = "/home/user/ihaskell-notebook/ghcj/dist/ghcj/ghcj"

• run ihaskellnb.sh in whatever directory you want to use for notebooks

Once in the notebook, create (or load, or upload) a notebook. In the first cell, evaluate:

%load_ext ghcjmagic

From this point on, all subsequent cell evaluations are run through the ghcj cell magic. There is no need to prefix the cells with %%ghcj as you would for a normal IPython cell magic.