[Mageia-dev] Proposal: Updating released versions (long post)

Thu Oct 14 00:16:50 CEST 2010

Renaud MICHEL wrote:
+> On Wednesday 13 octobre 2010 at 23:34, Frank Griffin wrote :
+>   
+>> One way of doing it might be, having identified packages that require
+>> this sort of support, to wrap the executables with scripts that do this
+>> the next time a user runs the software before the real executable is
+>> launched.
+>>     
+> Now that's getting very hackish.
+> I'd rather not have many programs wrapped in scripts that would do some 
+> magic on my home dir under the hood. Because with such a "solution" the 
+> programs would be always wrapped, even if you never do a rollback.
+> How would such script detect that it actually was a rollback and it should 
+> do his magic on the config files.
+>   
+
+The wrapper script would be specific to the package version which
+provided it.  If it finds a saved config file with a name matching its
+own version, it restores it and deletes the saved one.  If it doesn't,
+it does nothing.
+
+> What would happen if the user did not run that program between the update 
+> and the rollback?
+>   
+
+Nothing, because the new wrapper script would never have been executed
+to save a previous version, so the restored old wrapper script would not
+find anything to restore.
+
+
+
+> It seems the complexity is not worth the benefit, and those scripts are 
+> likely to not be well tested and might make things worse if things are not 
+> like they expected.
+>   
+
+That's a pretty broad statement, especially considering the complexity
+of some of the wrapper scripts we already have.  This is not that
+complex, and the benefit of finding a solution is considerable, based on
+the previous posts/relies in this thread.
+
+