On Thu, Jan 05, 2017 at 03:08:21PM -0800, Brendan Conoboy wrote:
> On 01/05/2017 02:08 PM, Stephen Gallagher wrote:
> [snip]
> > == multi-arch layout ==
> > * Moving the locations of all of the system libraries would potentially
> > still
> > break third-party applications that were compiled to expect libraries to be
> > in
> > the /usr/lib[64] paths. This would be a similar problem to the UsrMove
> > change
> > and would likely be solved the same way; by maintaining symlinks in the old
> > locations for some reasonable migration period. Given the enormous number of
> > packages involved and the fact that it's not a simple directory rename, we
> > may
> > need to add a hack into rpmbuild to automatically generate these symlinks
> > in the
> > old location.
> >
> > * Switching to this layout might give a false (or possibly accurate, in some
> > cases) impression that one could expect Debian/Ubuntu packages to function
> > "out
> > of the box" on Fedora (if using something like Alien). Education is key
> > here.
> [snip]
>
> For anyone who isn't familiar with this topic, you might find Debian's
> documentation useful:
>
> https://wiki.debian.org/Multiarch
>
> One could take it a step further and actually have target triplets the
> convey OS version of the libraries instead of the generic "-redhat-linux"
> part of the tuple. With a little rpath abuse apps compiled for F25 could
> find their shared libraries in an F25 specific directory and multiple
> versions of the same package could be installed at the same time, for
> different OS versions. This goes beyond Fedora, too: apps compiled for
> Debian could find their shared libraries in a Debian specific directory,
> even though it's a Fedora system that is booted. A lot of fiddly details
> and hand waving go here, but the end result would be really useful.
Noo! Debian Multiarch is FHS incompatible, too ugly to live with and
doesn't bring benefits, it is just different.
Please don't introduce this into Fedora.
Jakub
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