package license fields

[Daan Leijen]

Dear Cabal design team,

I see that the license field in the package
descriptions must be one of the following
values:

GPL, LGPL, BSD3, BSD4, PublicDomain, AllrightReserved
or OtherLicense.

Can (should?) we add the "WxWidgets" license?
(essentially L-GPL but allows commercial use).

-- Daan