* gnu/packages/haskell.scm (ghc-xml-conduit): Update to 1.7.1.2. [inputs]: Remove ghc-blaze-builder and ghc-data-default; add ghc-data-default-class.
* gnu/packages/haskell.scm (ghc-xml-conduit): Update to 1.7.1.2. [inputs]: Remove ghc-blaze-builder and ghc-data-default; add ghc-data-default-class.