guix copy connection problems

guix copy connection problems

[Jack Hill]

Hello Guix,

I'm trying to use `guix copy` to copy some store items from a more 
powerful computer to my laptop. I've tried to set everything up correctly 
with ssh-agent, and I can ssh without being prompted for credentials, but 
guix-initiated connections are timing out, so clearly I'm missing 
something, but I don't know what. Perhaps the following session transcript 
with show what I'm missing:

```
$ env|grep -i ssh
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
jackhill@alperton ~$ ssh-add -l
256 SHA256:g7qjlV99AHx3R2/ZlkeMGPqnYGzwPJjhVY5y7WX1a/E jackhill@alperton (ED25519)
jackhill@alperton ~$ ssh jackhill@remote
Last login: Fri Jul 26 21:38:23 2019 from 107.15.18.231
jackhill@remote ~$ logout
Connection to remote closed.
jackhill@alperton ~$ guix copy --from="jackhill@remote" icecat
guix copy: error: SSH connection to 'remote' failed: Timeout connecting to remote
```

Best,
Jack

Re: guix copy connection problems

[Marius Bakke]

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Jack Hill <jackhill@jackhill.us> writes:

> Hello Guix,
>
> I'm trying to use `guix copy` to copy some store items from a more 
> powerful computer to my laptop. I've tried to set everything up correctly 
> with ssh-agent, and I can ssh without being prompted for credentials, but 
> guix-initiated connections are timing out, so clearly I'm missing 
> something, but I don't know what. Perhaps the following session transcript 
> with show what I'm missing:
>
> ```
> $ env|grep -i ssh
> SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
> jackhill@alperton ~$ ssh-add -l
> 256 SHA256:g7qjlV99AHx3R2/ZlkeMGPqnYGzwPJjhVY5y7WX1a/E jackhill@alperton (ED25519)
> jackhill@alperton ~$ ssh jackhill@remote
> Last login: Fri Jul 26 21:38:23 2019 from 107.15.18.231
> jackhill@remote ~$ logout
> Connection to remote closed.
> jackhill@alperton ~$ guix copy --from="jackhill@remote" icecat
> guix copy: error: SSH connection to 'remote' failed: Timeout connecting to remote
> ```

'guix copy' does not currently support the 'user@host' style.  Instead
you have to configure your ~/.ssh/config such that 'ssh hostname' works,
then you can use guix copy --to=hostname-or-ip.

I suspect adding support for 'user@host' should not be too difficult,
without having looked at the code ;-)

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