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Date: Wed, 05 Jun 2013 12:21:54 -0500
From: Bruce Dubbs <bruce.dubbs@gmail.com>
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To: Mads Kiilerich <mads@kiilerich.com>
Subject: Re: [RFC] Support for UEFI ESP in os-prober
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Mads Kiilerich wrote:
> On 05/31/2013 07:03 PM, Bruce Dubbs wrote:
>> Vladimir 'φ-coder/phcoder' Serbinenko wrote:
>>
>>> I must say I'm generally disappointed with os-prober and have
>>> ideas to move away from it. I'll start another topic for it.
>>
>> I agree.  I would prefer adding an include command so grub.cfg could
>> just do something like:
>>
>> include /boot/grub/grub.d/*.cfg
>>
>> and have an install procedure drop in one or more menu items instead
>> of every os install or update rewriting the entire grub.cfg every time.
>
> http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec/ describes
> such a configuration structure, and
> http://pkgs.fedoraproject.org/cgit/grub2.git/plain/0362-blscfg-add-blscfg-module-to-parse-Boot-Loader-Specif.patch
> implements it as a grub command.

Although that's a good start, it seems a little too specific.  What I 
had in mind would be the equivalent to the source command in bash.  For 
example,

if condition; then
   include (hd0,3)/grub/custom/themes/themeA.cfg
else
   include (hd0,2)/boot/grub/themes/themeB.cfg
fi

# Get menuentries
include /boot/grub/grub.d/*.cfg

I have no preference to the keyword.  Either include or source would work.

   -- Bruce