* gnu/packages/base.scm (make): Update to 4.1. Adapt 'default_shell'
substitution to new code.
* gnu/packages/commencement.scm (gnu-make-boot0): Remove code that
manually removed guile.c from list of things to build.
Based on a patch by Ludovic Courtès <ludo@gnu.org>.
* gnu/packages/bash.scm (%patch-series-4.3): Add two patches.
(bash)[source]: Add parser-oob patch. Add 'snippet'.
[native-inputs]: New field.
* gnu/packages/commencement.scm (bison-boot1): New variable.
(static-bash-for-glibc): Add 'native-inputs'.
Co-Authored-By: Ludovic Courtès <ludo@gnu.org>