Sometimes it is desirable to include an auxiliary executable, which is not written in haskell or is written in haskell, but better not be compiled and run as a script instead. Currently cabal doesn't offer any way to install such executables into $bindir. I suggest adding an extra-bin-files property that should be treated similar to data-files, but install into $bindir and take care of correct permissions.
The way through the hooks is unsatisfactory, because the hooks allow no way of telling cabal what they have done. This is going to be a problem, when cabal starts tracking all the installed files for uninstall purposes.
See also
http://thread.gmane.org/gmane.comp.lang.haskell.libraries/9227
