As far as I know to make new projects yosog and yosog2 I do the following
$ yesod init
$ cd yosog
yosog$ cabal sandbox init
yosog$ cabal install
$ yesod init
$ cd yosog2
yosog2$ cabal sandbox init
yosog2$ cabal install
But each cabal install takes forever. How am I suppose to make a bunch of Yesod projects if each takes forever to compile?