[Haskell-cafe] base-4 + gtk2hs-0.10.0 licensing

[Victor Nazarov]

I wonder what software licence I can use to release my application.
I've developed some education tool with the following dependencies:

% ghci Main.hs
GHCi, version 6.10.1: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer ... linking ... done.
Loading package base ... linking ... done.
Ok, modules loaded: Main, UI, Lambda, Lambda.Eval, Lambda.Zipper,
Lambda.Show, Lambda.Parser, Lambda.Common.
Prelude Main> main
Loading package syb ... linking ... done.
Loading package array-0.2.0.0 ... linking ... done.
Loading package containers-0.2.0.0 ... linking ... done.
Loading package bytestring-0.9.1.4 ... linking ... done.
Loading package Win32-2.2.0.0 ... linking ... done.
Loading package parsec-2.1.0.1 ... linking ... done.
Loading package mtl-1.1.0.2 ... linking ... done.
Loading package old-locale-1.0.0.1 ... linking ... done.
Loading package time-1.1.2.2 ... linking ... done.
Loading package glib-0.10.0 ... linking ... done.
Loading package cairo-0.10.0 ... linking ... done.
Loading package gtk-0.10.0 ... linking ... done.
Loading package glade-0.10.0 ... linking ... done.

I just don't know the options and I think licensing is subtle enough
to ask for suggestions.

Thanks in advance.
--
Victor