bug#32183: New ‘guix pull’ /root/.config/current/bin/guix: Permission denied

[Pjotr Prins]

On Tue, Sep 11, 2018 at 12:12:15PM +0200, Ludovic Courtès wrote:
> The download process is running as a build user, not as root, hence the
> permission issue (silly me!).
> 
> Now we need to find a way to use ‘guix’ from root’s
> ~/.config/guix/current.  A solution may be to expose that profile under
> /var/guix/profiles.  Needs more thought…

Great! Any quick hacks to fix this? Even when I set all permissions open I get 
in the latest tree

./pre-inst-env guix package -i r-rqda -p ~/opt/rqda 
--substitute-urls="https://berlin.guixsd.org"; --verbose

Building 
/gnu/store/nknybsl5a9wnfgd9bs13fzmjwa382ys2-libgcrypt-1.8.3.tar.bz2.drv - 
x86_64-linux
/gnu/store/sf84mb2y5vcykwq9fv02l2nipp34qng2-guix-daemon-0.15.0-3.3d43017/libexec/guix/download:
 line 8: /root/.config/guix/current/bin/guix: Permission denied
/gnu/store/sf84mb2y5vcykwq9fv02l2nipp34qng2-guix-daemon-0.15.0-3.3d43017/libexec/guix/download:
 line 8: exec: /root/.config/guix/current/bin/guix: cannot execute: Permission 
denied
builder for 
`/gnu/store/nknybsl5a9wnfgd9bs13fzmjwa382ys2-libgcrypt-1.8.3.tar.bz2.drv' 
failed with exit code 126
Build failed: 
/gnu/store/nknybsl5a9wnfgd9bs13fzmjwa382ys2-libgcrypt-1.8.3.tar.bz2.drv - 1 
builder for 
`/gnu/store/nknybsl5a9wnfgd9bs13fzmjwa382ys2-libgcrypt-1.8.3.tar.bz2.drv' 
failed with exit code