Hi,

On Wed, 2011-01-26 at 08:18 +1000, Ivan Lazar Miljenovic wrote:

...

Or else because the developers _wanted_ to license it under the GPL. Some people do, you know.

Sure, but I agree it would be nice to know whether the authors chose the GPL, or applied it because of linking with GPLed native libraries and might be open to relicensing the native stuff. Seems like a good question to me.

-- Chris Smith

hmatrix contains a binding to (i) the GNU GSL library (for fast vector optimisations) and (ii) BLAS/LAPACK (for linear algebra). The GNU GSL library _requires_ a LGPL license. In the short term I do not think this can change. In the longer term, once dph and friends are working well and performance is optimised (dph can do fast linear algebra), the reliance on GSL and LAPACK might be removed. The hmatrix package can be configured to use Data.Vector.Storable of the vector package, and there is work being done on improving fast vector operations in that package. As far as I know, the vector package is _not_ intending to supply mathematical operations. Alberto? Cheers, Vivian