Josh Triplett writes ("Re: Handling Multi-Arch packages that must be installed
for every enabled architecture?"):
> On Sat, Jun 25, 2016 at 07:08:39PM +0100, Ian Jackson wrote:
> > * LD_PRELOAD hacks need their .so installing for all architecture "for
> > which they are going to be used" (whatever that means)
>
> Such as fakeroot and fakechroot?
Right, faketime too. I maintain one: authbind.
> > * The language plugin problem.
>
> Can you elaborate on this? Do you mean languages that have native-code
> plugins?
Yes.
Example:
sauce [all] contains pure Tcl code.
It has a #! line naming a specific Tcl interpreter (let's say 8.5, for
now). So it Depends tcl8.5 (or whatever). tcl8.5 is (or should be)
M-A foreign. It contains the Tcl script interpreter executable.
sauce uses adns to do its primary DNS queries. This is done via a Tcl
plugin in the chiark-tcl package. sauce loads this with the Tcl
"load" builtin, which loads a named shared object from the library
search path and calls a specific init function.
So sauce Depends libtcl-chiark-1.
libtcl-chiark-1 is Arch: any. It contains only shared objects. It
needs to be coinstallable. It should be M-A: same.
Somehow we need to arrange that if sauce:all's dependency on tcl8.5
is satisfied by tcl8.5:X, and libtcl-chiark-1:X is installed.
Ian.
