Updating a very old Guix

[Konrad Hinsen <konrad.hinsen@fastmail.net>]

Hi everyone,

I have a computer that I don't use very often, with a rather old Guix
installation from nearly a year ago. So I though I should do an update.

First try: "guix pull".

Does a lot of downloading and compiling, then finishes. But guix no
longer works:

   ERROR: In procedure scm-error:
   no code for module (gcrypt hash)

Next try: I cloned the repository under a different user account (that
still had the old Guix). "guix environment guix", "bootstrap", and
then "configure" get me to the error message:

  configure: error: A recent Guile-SQLite3 could not be found; please
  install it.

But I cannot install a recent Guile-SQLite3 without doing a "guix pull"
first.

One more option I can think of is installing everything required to
compile Guix manually, then compile from source. Not exactly an
attractive idea, all the more since the dependency list in the Guix
manual looks incomplete (it doesn't mention Guile, for example, nor 
Guile-SQLite3).

Are there any other options ? I would like to avoid deleting everything
and starting from scratch because there is one account on that machine
that has in its Guix profile my only working installation of the only
program I actually need this machine for.

Konrad.