From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark H Weaver <mhw@netris.org>
Subject: Re: [PATCH] Add Julia.
Date: Tue, 24 Mar 2015 10:56:57 -0400
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To: Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>
Cc: guix-devel <guix-devel@gnu.org>

Mark H Weaver <mhw@netris.org> writes:

> Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de> writes:
>
>> From 41550ffafa8da05b2cf8dfad66d44e6f43c9042c Mon Sep 17 00:00:00 2001
>> From: Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>
>> Date: Fri, 20 Mar 2015 11:26:23 +0100
>> Subject: [PATCH 2/2] gnu: Add Julia.
>>
>> * gnu/packages/julia.scm: New file.
>> * gnu-system.am (GNU_SYSTEM_MODULES): Add it.
>
> Hydra was unable to successfully build Julia on any platform.  See:
>
>   http://hydra.gnu.org/build/339221
>   http://hydra.gnu.org/build/339192

The illegal instruction errors are in openblas, which is marked
non-substitutable because it apparently builds itself customized to the
CPU on the build machine.  So, I guess openblas might have been built on
a build slave with more processor features than the one used to build
Julia.

Perhaps the answer is that Julia shouldn't be built by Hydra, because
one of its transitive inputs is non-substitutable.

   Thoughts?
      Mark