[Haskell-cafe] ANNOUNCE: vacuum-cairo: a cairo frontend to vacuum for live Haskell data visualization

Mark Wassell mwassell at bigpond.net.au
Tue Mar 31 04:52:48 EDT 2009

Great work. However I am have a problem running on windows - it needs 

Prelude System.Vacuum.Cairo> view [1]
Loading package mtl- ... linking ... done.
Loading package parallel- ... linking ... done.
Loading package glib-0.10.0 ... linking ... done.
Loading package cairo-0.10.0 ... linking ... done.
Loading package svgcairo-0.10.0 ... can't load .so/.DLL for: librsvg-2-2 
(addDLL: could not load DLL)
Prelude System.Vacuum.Cairo>

Anyone know where I can get this? I have googled around and whilst there 
is the librsvg development site, there is no sign of a windows DLL.  All 
I can find is some generic site which seems to provide DLLs. I don't 
trust it.



Don Stewart wrote:
> I am pleased to announce the release of vacuum-cairo, a Haskell library
> for interactive rendering and display of values on the GHC heap using
> Matt Morrow's vacuum library.
> This library takes vacuum's output, generates dot graph format from it,
> renders it to SVG with graphviz, and displays the resulting structure
> using the gtk2hs Cairo vector graphics bindings ... all at the GHCi
> command line.
> This tool is useful for examining Haskell data structures as they are
> represented directly in the heap. In particular, it makes sharing visible for
> the first time, as well as unboxed values. It should be useful for
> teaching Haskell, or for library authors debugging the design of their
> data structures.
> You can see pictures of the rendered display here:
>     http://code.haskell.org/~dons/images/vacuum/intmap.png
> And youtube screencasts of vacuum-cairo in action:
>     http://www.youtube.com/watch?v=oujaqo9GAmA
> Get it:
>     cabal install vacuum-cairo
> And on Hackage:
>     http://hackage.haskell.org/cgi-bin/hackage-scripts/package/vacuum-cairo
> -- Don
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