Hi Michael W,
Perhaps Fedora (I am the Fedora ghc and HP package maintainer) is being
too pedantic but the "ghci library" or libghc or what you what to call it
is not formally part of haskell-platform. It is also a rather large and so
currently in Fedora you have to install the main ghc meta-package to pull
ghc-ghc-devel in. I might be persuaded to change this if enough people
complain. But conversely not everyone needs the ghc library and TH,
etc though...
Jens