The haskell-platform package, in every form and version on every platform also contains a cabal binary, see https://admin.fedoraproject.org/community/?package=haskell-p... to see this in fedora. Some of the advice you got here was I think not good because you pretty clearly affirm that you installed the fedora Haskell Platform. On #haskell this could all have been debugged in seconds after the difficulty first appeared.