Haskell-NDS

This repository is a PoC to run Haskell on Nintendo DS.
It uses the JHC compiler (not to be confused with GHC compiler) to transpile Haskell code to C code.
The C code will be compiled using devkitpro compiler then.

JHC

JHC being old and unmaintained, the jhc-components is a fork of a fork of a fork etc.. which has been updated to build with a recent GHC.
Go see jhc-components/README.md to build it, then you may proceed.

JHC oddities

JHC has some issues with if then else, the following code doesn't compile despite being valid and produces a parser error with JHC :

main = do
    if True then do
        print "true"
    else
        print "false"

You must do this instead :

main = do
    if True then do
            print "true"
        else
            print "false"

Build

Simply run make.

Run

DeSmuME on Linux (0.9.13 for now) cannot run homebrew ROMs using libnds-v2 (it does open the file but does nothing), as libnds has undergone some major changes.
I don't know about DeSmuME on Windows.

With melonDS on Linux (0.9.5 for now), it's a bit weird.
After libnds-v2 was released, a pull request was made to update melonDS to run libnds-v2.
That branch perfectly runs the PoC, but even if the PR was merged, the upstream version doesn't run the PoC (white screen doing nothing).
I dont't know either about melonDS on Windows.

I tested on real hardware with a Nintendo DS Lite, and it perfectly runs.

Credits

Many thanks to Brian McKenna for his blog article, from which I've downloaded the Makefile, include and source files.
They have slightly been updated to be able to compile though, and they may evolve further if I decide to improve this project.