Previously guile-static-stripped, which is embedded in the initrd, would
depend on 'bash-minimal' and 'glibc'; the closure size was 77 MiB. Now
the closure size is down to 45.7 MiB.
Reported by Danny Milosavljevic <dannym@scratchpost.org> in
<https://lists.gnu.org/archive/html/guix-devel/2018-02/msg00505.html>.
* gnu/packages/make-bootstrap.scm (%guile-static): Remove the
'pre-configure' phase.
(%guile-static-stripped)[arguments]: Add #:allowed-references.
63e48300d1