How could it miss my lovely package named "spreadsheet"? It provides a lazy parser.
Installing "spreadsheet":
cabal install
Resolving dependencies...
cabal: cannot configure explicit-exception-0.1.6. It requires transformers
==0.2.*
For the dependency on transformers ==0.2.* there are these packages:
transformers-0.2.0.0, transformers-0.2.1.0 and transformers-0.2.2.0. However
none of them are available.
transformers-0.2.0.0 was excluded because spreadsheet-0.1 requires
transformers ==0.0.*
transformers-0.2.1.0 was excluded because spreadsheet-0.1 requires
transformers ==0.0.*
transformers-0.2.2.0 was excluded because spreadsheet-0.1 requires
transformers ==0.0.*