Install gtk2hs on ubuntu

cabal install gtk2hs-buildtools

sudo cp ~/.cabal/bin/gtk2hsC2hs /usr/bin



sudo cp ~/.cabal/bin/gtk2hsHookGenerator /usr/bin



sudo cp ~/.cabal/bin/gtk2hsTypeGen /usr/bin



cabal install gtk



cd ~/.cabal/share/cairo-0.11.1

gchi



:l Graph.hs



main



OK!