[Haskell] cabal-sort

I like to announce cabal-sort: If you have a bunch of packages that you want to compile or recompile, then you need an order of compilation that meets the dependencies. Given a number of cabal package files, cabal-sort reads all those files and emits them topologically sorted according to their dependencies. This way you can compile many packages at once, e.g. when a low-level package like transformers has changed. For compiling a couple of packages from their local darcs repositories in the right order, you may run something like $ for dir in `find . -name "*.cabal" | fgrep -v _darcs | xargs cabal-sort --info=dir`; \ do (cd $dir && cabal install); \ done http://hackage.haskell.org/package/cabal-sort