gnu: Add ghc-network.

* gnu/packages/haskell.scm (ghc-network): New variable.

gnu: Add ghc-vector.

* gnu/packages/haskell.scm (ghc-vector): New variable.

gnu: Add ghc-parsec.

* gnu/packages/haskell.scm (ghc-parsec): New variable.

gnu: Add ghc-split.

* gnu/packages/haskell.scm (ghc-split): New variable.

gnu: Add ghc-unordered-containers.

* gnu/packages/haskell.scm (ghc-unordered-containers): New variable.

gnu: Add ghc-fgl.

* gnu/packages/haskell.scm (ghc-fgl): New variable.

gnu: Add ghc-containers.

* gnu/packages/haskell.scm (ghc-containers): New variable.

gnu: Add ghc-syb.

* gnu/packages/haskell.scm (ghc-syb): New variable.

gnu: Add ghc-case-insensitive.

* gnu/packages/haskell.scm (ghc-case-insensitive): New variable.

gnu: Add ghc-quickcheck.

* gnu/packages/haskell.scm (ghc-quickcheck): New variable.

gnu: Add ghc-tf-random.

* gnu/packages/haskell.scm (ghc-tf-random): New variable.

gnu: Add ghc-primitive.

* gnu/packages/haskell.scm (ghc-primitive): New variable.

gnu: Add ghc-random.

* gnu/packages/haskell.scm (ghc-random): New variable.

gnu: Add ghc-hunit

* gnu/packages/haskell.scm (ghc-hunit): New variable.

gnu: Add ghc-hashable.

* gnu/packages/haskell.scm (ghc-hashable): New variable.

gnu: Add ghc-text.

* gnu/packages/haskell.scm (ghc-text): New variable.

gnu: Add ghc-parallel.

* gnu/packages/haskell.scm (ghc-parallel): New variable.

gnu: Add ghc-stm.

* gnu/packages/haskell.scm (ghc-stm): New variable.

gnu: Add ghc-zlib.

* gnu/packages/haskell.scm (ghc-zlib): New variable.

gnu: Add ghc-paths.

* gnu/packages/haskell.scm: (ghc-paths): New variable.