Subject: Re: bug#40125: Problem with guix offload: Remote channel closed

From: Mikael Djurfeldt <[email-masked]>
Date: Mon, 23 Mar 2020 00:12:47 +0100

On Sun, Mar 22, 2020 at 11:59 PM Marius Bakke <[email-masked]> wrote:

> Mikael Djurfeldt <[email-masked]> writes:
>
> >> It might be .bashrc is configured not to source the relevant scripts
> >> when being invoked non-interactively, and/or through an SSH session.
> >>
> >
> > You're right. It doesn't source the scripts. The PATH only becomes
> > /usr/local/bin:/usr/bin:/bin:/usr/games in this case.
>
> On Guix System, the default .bashrc does this:
>
> if [[ $- != *i* ]]
> then
>     # We are being invoked from a non-interactive shell.  If this
>     # is an SSH session (as in "ssh host command"), source
>     # /etc/profile so we get PATH and other essential variables.
>     [[ -n "$SSH_CLIENT" ]] && source /etc/profile
>
>     # Don't do anything else.
>     return
> fi
>
> IIRC Debian does something similar to detect if being invoked
> non-interactively, but then just returns instead of sourcing anything.
>
> Adding a line that sources ~/.guix-profile/etc/profile before the check
> for an interactive shell might be enough in that case.
>

I examined this a bit. You're right about .bashrc. But sourcing that
profile is not sufficient.

Just as a test, I enabled user specified environments in sshd_config (such
that ssh reads .ssh/environment) and added the following there:

PATH=/gnu/store/0awhym5h0m890n0wq87y0dxznh14rk88-guile-next-3.0.1/bin:/home/guix/.guix-profile/bin:/usr/local/bin:/usr/bin:/bin:/usr/games
GUILE_LOAD_COMPILED_PATH=/gnu/store/nkh7c4ygaivfxdq3zhccl4a5qxrn6s88-guix-module-union/lib/guile/3.0/site-ccache:/gnu/store/0awhym5h0m890n0wq87y0dxznh14rk88-guile-next-3.0.1/lib/guile/3.0/ccache
GUILE_LOAD_PATH=/gnu/store/nkh7c4ygaivfxdq3zhccl4a5qxrn6s88-guix-module-union/share/guile/site/3.0:/gnu/store/0awhym5h0m890n0wq87y0dxznh14rk88-guile-next-3.0.1/share/guile/3.0
GUIX_PROFILE=/home/guix/.guix-profile
GUIX_LOCPATH=/home/guix/.guix-profile/lib/locale

This made the offload test work.

Crucial here is the PATH to guile 3.0.1 as well as the GUILE_LOAD_* paths.

But how are these *supposed* to be setup on the build host???