Problem upgrading to latest version of Guix

[Alex Sassmannshausen]

Hello,

I've been away from decent internet access for a while, and now that I'm
back I wanted to pull the latest version of guix. I'm currently on 0.2,
issuing the guix pull command returns an error, the relevant part of
which I think is:

----
   ?: 7 [primitive-load-path "gnu/packages/perl" #f]
In ice-9/eval.scm:
 421: 6 [eval # ()]
 442: 5 [eval # ()]
 421: 4 [eval # #]
 425: 3 [eval # #]
 382: 2 [eval # #]
In unknown file:
   ?: 1 [memoize-variable-access! # #]
In ice-9/boot-9.scm:
 106: 0 [#<procedure 987fe40 at ice-9/boot-9.scm:97:6 (thrown-k . args)>
 unbound-variable ...]

ice-9/boot-9.scm:106:20: In procedure #<procedure 987fe40 at
ice-9/boot-9.scm:97:6 (thrown-k . args)>:
ice-9/boot-9.scm:106:20: Unbound variable: gnu-build-system
copying and compiling Guix to
`/nix/store/gzyfa3zkh2dkyx6hakvpf4izf24pn02q-guix-latest'...
builder for
`/nix/store/pxr1p1hmnyl1hpbpmasikibj1h9agqii-guix-latest.drv' failed
with exit code 1
error: build failed: build of
`/nix/store/pxr1p1hmnyl1hpbpmasikibj1h9agqii-guix-latest.drv' failed
----

And specifically maybe:
ice-9/boot-9.scm:106:20: Unbound variable: gnu-build-system

The download seems to work, but earlier in the process guix complains
about unbound variables too:

guix-0.2/TODO
;;; guix/build/download.scm:110:17: warning: possibly unbound variable
`make-session'
;;; guix/build/download.scm:110:17: warning: possibly unbound variable
`connection-end/client'
;;; guix/build/download.scm:111:4: warning: possibly unbound variable
`set-session-transport-fd!'
;;; guix/build/download.scm:112:4: warning: possibly unbound variable
`set-session-default-priority!'
;;; guix/build/download.scm:113:4: warning: possibly unbound variable
`set-session-credentials!'
;;; guix/build/download.scm:113:38: warning: possibly unbound variable
`make-certificate-credentials'
;;; guix/build/download.scm:119:4: warning: possibly unbound variable
`handshake'
;;; guix/build/download.scm:120:4: warning: possibly unbound variable
`session-record-port'
;;; guix/build/download.scm:195:21: warning: possibly wrong number of
arguments to `http-get'
Backtrace:
In ice-9/eval.scm:

Any idea as to what might be happening here?

When running guix pull, do I have to re-install guix dependencies
manually or should it normally install these automatically?

Best wishes,

Alex