There are two factors here:
1) libcsage is gone in the upcoming sage 6.8.
2) I bit the bullet and used the pari git snapshot used in sage
for sage-on-gentoo.

This was not a light decision. I looked at the packages depending
of pari and I found they were in two class:
a) packages using an outdated (pari 2.3) interface to pari. Those
are clisp and perl binding to pari. For those if you want to use pari
you would have to provide an outdated version for their use.
b) all the other packages I knew to be depending on pari are
in sage. They will compile and work with the pari provided by
sage, if sometimes with patches (lcalc for example).

I don’t know any other packages depending on pari in Gentoo,
I don’t know the situation in fedora but I suspect it will be similar.

François

> On 21/06/2015, at 12:13, Paulo César Pereira de Andrade 
> <paulo.cesar.pereira.de.andr...@gmail.com> wrote:
> 
>  Hi,
> 
>  I believe this should be one of the best places to ask,
> about any estimative of when it will be available.
> 
>  I have sagemath 6.5 packaged in Fedora. Today I started
> implementing a "pari_wrap.c" and "pari_wrap.h" interface
> in libcsage, but noticed it would not be a trivial patch to
> create sage_parifunc wrappers to implement variants of
> those that are different from pari 2.7.4, because it would
> need to know too much about pari internals, and the number
> of dependency extra static functions started growing too much...
> 
>  At the moment I prefer to not "attempt" to have Fedora
> accepting something like a pari-sage package.
> 
> Thanks,
> Paulo
> 
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