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

[Pjotr Prins <pjotr.public12@thebird.nl>]

On Tue, Sep 11, 2018 at 03:23:13PM +0200, Pjotr Prins wrote:
> 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

Hmmm. It fixed itself when I added the mirror substitute URL again.
After that it successfully built ghostscript. Looks like the building
problem only exists in the pre-building track of guix where it builds
packages for its own use?