bug#26811: guix does not resume download on FTP timeouts

[Leo Famulari]

On Sun, May 07, 2017 at 07:49:32PM +0100, Sergei Trofimovich wrote:
> On Sun, 7 May 2017 14:25:43 -0400
> Leo Famulari <address@hidden> wrote:
> 
> > On Sun, May 07, 2017 at 09:31:59AM +0100, Sergei Trofimovich wrote:
> > > I have slow internet :)
> > > 
> > > It looks like ftp://tug.org has a FTP session timeout of 2 hours 11 
> > > minutes, or something like that.
> > > Over night I tried to build sbcl and failed. Note how download silently 
> > > stopped at ~80% [1].
> > > 
> > > Would be nice if guix had a mechanism to reconnect to FTP and continue 
> > > download after timeout.  
> > 
> > In the meantime, you can download the files with a resumable tool like
> > wget, and then use `guix download file:///path/to/file` to work around
> > this missing feature. Note that both the client *and* the server must
> > support resuming downloads for this to work.
> 
> The workaround worked.
> 
> I've noticed it took guix-daemon 2GB of RAM to process this file locally.
> Does guix keep all the file in RAM until download finishes?

I haven't looked, but that's how I'd expect it be coded. The OS can
handle paging things in and out as needed, right?

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