Ludovic Courtès <ludo@gnu.org> skribis:

> In a nutshell, Guile installs its own GMP memory allocation routines
> (when ‘scm_install_gmp_memory_functions’ is true, which is the default)
> so that GMP allocates via libgc.  GnuTLS uses Nettle, which uses GMP, so
> Nettle too ends up allocating via libgc; however, since pointers to that
> memory are not scanned by libgc, they end up being reclaimed early.

One of the solutions is to set:

  scm_install_gmp_memory_functions = 0;

in Guile, as Andy suggested on IRC, but it incurs a performance hit on
bignum-heavy applications such as the compiler:

  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=964284#78

However, since Guix now uses its own ‘guile’ binary, we can work around
the issue like so: