Danny Milosavljevic <dannym@scratchpost.org> writes:

> How do I debug this?
>
> $ guix-core-updates/guix/pre-inst-env guix environment -s armhf-linux --pure grep
>
> needs grep (it's in the implicit native inputs), and that grep has a test failure.

Does this work?

  guix environment -s armhf-linux -e '(@@ (gnu packages commencement) grep-final)'

Otherwise you can approximate it by building with -K, step into the
/tmp/guix-build-... directory and run 'source environment-variables'.