[GAP Forum] polynomial invariants of weyl groups

[R.N. Tsai]

Dear gap-forum,

I'm trying to calculate the polynomial invariants of weyl groups
(associated with simple lie algebras over the complex field,
in the rep corresponding to the rank of the algebra...).
Does anyone know of any existing packages that can help?
(CHEVIE has some partial results, but it only runs under gap3). 

Thanks,
R.N.