Re: very few substitutes available?

[Thomas Danckaert]

From: address@hidden
Subject: Re: very few substitutes available?
Date: Sat, 05 Jan 2019 11:39:03 -0800

> > How long does it typically take before substitutes are available 
> > after
> > pulling from master?  Or is there a way to see (from ci.guix.info?)
> > which revision I should pull in order to have a maximum of 
> > substitutes
> > available?
>
> Are you on 32 or 64 bit?
> Paste "uname -a"

Hi,

I'm on GuixSD, 64-bit.  guix --version tells me I'm on revision 
afbf9763faf231c27ef25315d4d24379e1762568 (I last pulled on Jan 1).  
Guix weather reports 85.2% substitutes available, but then when I run 
'guix package' with that manifest, I find myself building 
(bootstrap?) binutils, glib, and multiple versions of gcc.  It 
doesn't even seem to look for substitutes (?):

$ guix package --manifest=config/manifest.scm
installing new manifest from 'config/manifest.scm' with 62 entries
building 
/gnu/store/nqdhvdaxljy8isvnvs9bawaj7q31z9vh-glibc-2.28.tar.xz.drv...
downloading from 
https://ftpmirror.gnu.org/gnu/glibc/glibc-2.28.tar.xz...
building 
/gnu/store/dyw59i3xi8j7xszrdxcl1zzmg3qmx4ly-gcc-4.9.4.tar.bz2.drv...
downloading from 
https://ftpmirror.gnu.org/gnu/gcc/gcc-4.9.4/gcc-4.9.4.tar.bz2...
building 
/gnu/store/qvnd4g7maw20jb2gv1x9w3rnf3bsm0hx-gcc-5.5.0.tar.xz.drv...
downloading from 
https://ftpmirror.gnu.org/gnu/gcc/gcc-5.5.0/gcc-5.5.0.tar.xz...
[...]

Strangely, I *do* get substitutes when I specify 
--substitute-urls=https://mirror.hydra.gnu.org.

What substitute server is currently recommended?  Or what could be 
wrong with my setup that I'm not finding these substitutes 
automatically?

Thomas