Mick,

Mick Sulley 写道：
> 1) How can I get it to look for the standard version rather than 
> the
> guix version

There isn't a more or less standard version, just bash caching the 
last used binary.  Use ‘hash -r’ to clear bash's cache and make it 
look again.

> My PATH is

(So $PATH isn't used at all once you've run unison in the same 
shell.)

>> 2) How can I remove guix completely?  I have searched on-line 
>> and
> cannot see anything on this.

Off the top of my head: remove

  ~/.config/guix
  ~/.cache/guix
  ~/.guix-profile
  /gnu
  /var/guix
  /var/log/guix

Also take a look at the installer script[0] to see what it creates 
and what you can remove.

Good luck,

T G-R

[0]: 
https://git.savannah.gnu.org/cgit/guix.git/tree/etc/guix-install.sh