Travis: ghc --version and cabal --version
Travis: ghc --version and cabal --version

Pinging @kazu-yamamoto

soenkehahn/wai,rgrinberg/wai,AndrewRademacher/wai,utdemir/wai,awpr/wai,sordina/wai,erikd/wai,yesodweb/wai,rgrinberg/wai,sordina/wai,dylex/wai,tolysz/wai,creichert/wai,frontrowed/wai,AndrewRademacher/wai,urbanslug/wai,urbanslug/wai,erikd/wai,dylex/wai,soenkehahn/wai,sordina/wai,kazu-yamamoto/wai,erikd/wai,iquiw/wai,iquiw/wai,AndrewRademacher/wai,awpr/wai,utdemir/wai,tolysz/wai,tolysz/wai,creichert/wai,jberryman/wai,coypoop/wai,jberryman/wai,awpr/wai,urbanslug/wai,iquiw/wai,mfine/wai,ygale/wai,jberryman/wai,erikd/wai,AndrewRademacher/wai,kazu-yamamoto/wai,rgrinberg/wai,rgrinberg/wai,dylex/wai,coypoop/wai,dylex/wai,coypoop/wai,mfine/wai,urbanslug/wai,rgrinberg/wai,mfine/wai,utdemir/wai,ygale/wai,yesodweb/wai,ygale/wai,mfine/wai,soenkehahn/wai,frontrowed/wai,soenkehahn/wai,ygale/wai,frontrowed/wai,iquiw/wai,utdemir/wai,coypoop/wai,jberryman/wai,frontrowed/wai,sordina/wai,tolysz/wai,awpr/wai