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GHC is a state-of-the-art, open source, compiler and interactive environment
for the functional language Haskell. This is a complete build, including
interactive system and profiling libraries and documentation.
+
+You will need 4.3G of free space in /tmp/SBo to build this package.
+
+In theory, if you already have ghc 7.4 or newer on your build host,
+you can skip the bootstrapping done by this script by passing
+BOOTSTRAP=no environment variable to this script. In that case, you
+also do not have to download the bindist, just the ghc-*-src.tar.xz.
+This is not recommended, though, since it is poorly tested.