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Re: Too many questions about texlive-texmf

From: Efraim Flashner
Subject: Re: Too many questions about texlive-texmf
Date: Mon, 11 Jul 2016 11:21:21 +0300
User-agent: Mutt/1.6.1 (2016-04-27)

On Mon, Jul 11, 2016 at 09:42:34AM +0200, Ricardo Wurmus wrote:
> Leo Famulari <address@hidden> writes:
> > We don't serve substitutes of texlive-texmf. We achieve this by
> > configuring nginx to return "410 Gone" [0].
> >
> > This requires users to build it with '--fallback', and the Guix error
> > message even recommends this, but many users ask about it on IRC.
> >
> > I think we should mark it '#:substitutable? #f' so that, IIUC, Guix will
> > download and build texlive-texmf from the upstream source automatically,
> > without stopping or requiring users to use '--fallback'.
> Does this cause substitutes to be disabled for all packages that depend
> on texlive-texmf?
> ~~ Ricardo

I don't know. Among the packages based on this is libreoffice, which I'm
guessing many people who would use it would never install it if they
always needed to build it from source. Based on the notes in maths.scm on
openblas, `#:substitutable? #f' also disables offloading, so while we don't
want to serve the file from hydra, we don't want to prevent people from
offloading the build to a more powerful machine. Is there a way that we
can mark that it hasn't been built yet on hydra? Or can we change the
error message for when it fails to download a file from hydra to:

Package "foo" failed to download. This may be because:
1. not yet built on hydra
2. fails to build, please help fix
3. broken pipe, try again

If you would like to try building it on your machine to work around 1 or
3, please add '--fallback' to your command.

Efraim Flashner   <address@hidden>   אפרים פלשנר
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