bug#46330: Guile-provided GMP allocators interfere with GnuTLS

["Ludovic Courtès" <ludo@gnu.org>]

Ludovic Courtès <ludo@gnu.org> skribis:

> One of the solutions is to set:
>
>   scm_install_gmp_memory_functions = 0;

Done in a53f711422f63d7e32b8639b968cf00bcc69ffea, followed by an update
of the ‘guix’ package in 63d4b74420563c4e2dbdfa29b3816d1dad9cd723.

This mostly solves the problem on the Guix side, but the issue remains
in GnuTLS.  I practical terms, we could experience random test failures
in the guile-gnutls test suite, like the Debian folks did.

At the very least we’ll need to work around that possibility in
‘core-updates’.  We could skip them, or add ‘gc-disable’ calls there.
Or we could build GnuTLS against Nettle-with-mini-GMP when that becomes
an option.

The other option coming up is to build Guile against mini-GMP.  Mike
Gran just started looked into it and it may be that 3.0.6 will offer it.

I’m keeping the bug open until this is sorted out.

Ludo’.