bug#30245: Downloading the texlive-texmf sources from Hydra is unreliable

[Maxim Cournoyer <maxim.cournoyer@gmail.com>]

Leo Famulari <leo@famulari.name> writes:

> cogrendel on #guix reported [0] this failure while installing texlive:
>
> ------
> Downloading https://mirror.hydra.gnu.org/guix/nar/5rnvmy02yazy8iwaa91kijbbqp8qmflz-texlive-20170524-texmf.tar.xz...
>  texlive-20170524-texmf.tar.xz 2.23GiB 3.8MiB/s 00:52 [# ] 8.7%guix
> substitute: error: TLS error in procedure
> 'read_from_session_record_port': Resource temporarily unavailable, try
> again.
> killing process 11204
> guix package: error: build failed: some substitutes for the outputs of
> derivation
> `/gnu/store/j3m0a6rwrz9jmass4zlndpn5y0x8g5n4-texlive-20170524-texmf.tar.xz.drv'
> failed (usually happens due to networking issues); try `--fallback' to
> build derivation from source
> ------
>
> I know we recently started serving this file from Hydra again, but I
> wonder if the Hydra mirror is up to the task?
>
> Based on their report, the build failed even with --fallback. Perhaps
> when process 11204 was killed, the whole thing stopped? I'm not able to
> verify this currently.

Hi, I haven't tried --fallback, but I experienced incomplete download of
texlive too. Bandwith was good at 2.7 MB/s, but the download of texlive
would always be interrupted around 15% (less than 2 minutes after
starting).

Maxim