On Mon, Jun 18, 2007 at 11:56:57AM -0400, Peter Tanski wrote:
Now each GHC-Haskell-based program installer would search /usr/local/ lib for, say, libHSrts_dyn-6.6.1.dylib and install that version if necessary. What happens on uninstall? The same thing you get on Windows when you have another program using a particular .DLL--the uninstall of that version of the library would fail but for unix systems _only_ if you also have another program using at while you are doing the uninstall. So if you did not break everything on each install, eventually you have a complete mess of different versions of GHC libraries in /usr/local/lib that may have no current use but at one time were used for several GHC-Haskell-based programs that have now been upgraded to use something different. Hopefully those who distributed the binary programs adopted a convention of using the full version of the library instead of symlinking libHSrts_dyn-6.6.1 to libHSrts_dyn, or as a user several of your older programs might break after a later one installed a new version of the library and symlinked that the new version...
That is why I think your idea was good: put everything into distinct directories.
Debian's high level package manager will automatically garbage collect dependancies, such that every package on your system is either manually selected for install or a dependant of one. Thus there is no library leak problem. Stefan