[Haskell-cafe] Haskell on the JVM

David Leimbach leimy2k at gmail.com
Mon Oct 27 16:57:21 EDT 2008

On Mon, Oct 27, 2008 at 12:02 PM, Brian Alliet <brian at brianweb.net> wrote:

> On Mon, Oct 27, 2008 at 10:58:11AM +0000, Simon Peyton-Jones wrote:
> > Is there an interest in hosting GHC on the JVM (besides my own).
> Yep. I wrote a JVM backend for GHC (LambdaVM). It is suffering from
> bit-rot though. I think this thread has re-spaked my interest in it
> though.
> > I don't think it's so hard to translate GHC's Core language to the
> > JVM.
> Definitely not. That is more or less the route I took (I actually
> transform STG it into yet another simple intermediate laguage that is
> more JVM friendly, this was more for optimization purposes though).
> While C-- looks fantastic for generating native code, it just didn't
> seem worth the effort to shoehorn it into the JVM. Although I haven't
> looked at any of the new backend stuff, I suspect it still won't be
> suitable for the JVM.
> -Brian
> _____

Being able to integrate Haskell into a rather large Java codebase might have
made me not choose Erlang.  Luckily, the OTP Erlang distribution had a lot
of other really desirable features for the project I was working, yet I feel
the lack of strong type checking hurt my productivity a bit, especially when
trying to come up with a way to specify the real INs and OUTs between the
Java and the Erlang code in terms of types.

The right way to solve that problem is with a stronger specification between
the Java team, and the Erlang team (aka me), however, it was still a really
positive experience in the ways of functional programming, and I suppose I
could have used Haskell to generate the glue between Java and Erlang had I
been a better Haskeller :-).

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