+GHC is a state-of-the-art programming suite for Haskell. Included is
+an optimising compiler generating good code for a variety of
+platforms, together with an interactive system for convenient, quick
+development. The distribution includes space and time profiling
+facilities, a large collection of libraries, and support for various
+language extensions, including concurrency, exceptions, and foreign
+language interfaces (C, whatever). GHC is distributed under a
+BSD-style open source license.