Felix Lechner via "Development of GNU Guix and the GNU System distribution." <guix-devel@gnu.org> writes:

> Today, a 'guix pull' caused an excessive allocation of system
> resources locally. I had rebased and published an experimental branch,
> which only added a targeted (and tested) fix for 'eudev' [1] on top of
> the mainline commit e499cb2c12d7f1c6d2f004364c9cc7bdb7e38cd5. Then I
> issued:
>
>   guix pull --disable-authentication --allow-downgrades
>
> That command ran very slowly and then resulted in the following
> process taking up over 91% memory before being terminated manually via
> 'kill -TERM'. The bare metal equipment has 28 GB of RAM.
>
>   guixbuilder01 3189 39.0 91.4  09:01 03:57
> /gnu/store/ad8351jvj61da279a3ddfs2gmk3whvdq-guile-wrapper/bin/guile
> --no-auto-compile
> /gnu/store/py8f9r0k22hmhahyz7hm7hrbdrvfa9n2-profile/bin/guix repl -t
> machine
>
> Any pointers would be welcome. Thanks!

It's probably not a problem with your changes, the commit from the Guix
master branch that you based your changes on was in a bad state. That's
been fixed now so try rebasing your changes.