Unfortunately cabal-dev ghci does not work in this project, i get an error:
Loading package download-0.3.2 ... linking ... ghc: /home/stulli/haskell/ifdl/cabal-
You can try something like the next:
runhaskell -package-conf=cabal-dev/packages-7.0.3.conf main.hs
But I think if cabal-dev ghci doesn't work, then runhaskell will not work too. You need to find out what is wrong with download package.
cabal-dev ghci
runhaskell
download