Hi Ludo,

> ‘guix pull’ will happily perform the transition.

For me, I have an older Guix (16th May) that fails to install guile-
gcrypt.  As root:

$ guix --version
guix (GNU Guix) 6f84dc4314cd84550d9fc7e7afa11c495edc45a5

When I try 'guix pull' there is an attempt to build guile-gcrypt
locally that fails with the message './configure:  No such file or
directory'.  I can see that the build procedure moves from the 'unpack'
phase straight to the 'patch-usr-bin-file' phase with no 'bootstrap'
phase in between.

Aha, another chicken-and-egg, I thought; my older Guix does not have a
'bootstrap' phase.  However, I can see that the commit for adding the
new phase was made on 11th March, so perhaps 'guix pull' is failing for
a different reason.

Maybe there is a workaround for this scenario.  WDYT?

Best regards,

Paul.