Ludovic Courtès <ludo@gnu.org> writes:

> Marius Bakke <mbakke@fastmail.com> skribis:
>
>> Leo Famulari <leo@famulari.name> writes:
>>
>>> On Sat, Nov 05, 2016 at 12:55:11PM +0000, Marius Bakke wrote:
>>>> * gnu/packages/grub.scm (grub-efi): New variable.
>>>> ---
>>>>  gnu/packages/grub.scm | 21 +++++++++++++++++++++
>>>>  1 file changed, 21 insertions(+)
>>>> 
>>>> diff --git a/gnu/packages/grub.scm b/gnu/packages/grub.scm
>>>> index ffce1bf..e06216f 100644
>>>> --- a/gnu/packages/grub.scm
>>>> +++ b/gnu/packages/grub.scm
>>>> @@ -157,3 +157,24 @@ on the same computer; upon booting the computer, the user is presented with a
>>>>  menu to select one of the installed operating systems.")
>>>>      (license gpl3+)
>>>>      (properties '((cpe-name . "grub2")))))
>>>> +
>>>> +(define-public grub-efi
>>>> +  (package
>>>> +    (inherit grub)
>>>> +    (name "grub-efi")
>>>> +    (synopsis (string-append (package-synopsis grub) " (UEFI version)"))
>>>> +    (inputs
>>>> +     `(("efibootmgr" ,efibootmgr)
>>>> +       ,@(package-inputs grub)))
>>>> +    (arguments
>>>> +     #:tests? #f ; FIXME: 40 failures, 24 skipped, 17 passed.
>>>
>>> Does this package work for you?
>>
>> Oops, not sure what went wrong when fixing up this package for
>> publishing. Updated patch attached.
>
> I think Leo was asking whether you could get a bootable system with it.

Yes, I'm using this right now, on top of the recent changes to "guix
system" :) There are a couple of other changes necessary for proper UEFI
support: the grub-install command needs "--efi-directory=<boot mount>"
and optionally "--bootloader-id=GNU" (I use these as well, but did not
publish them, since I haven't tested it on a BIOS system yet, and they
probably need to be conditional somehow). 

>> From 940c03c7dcddec019e27f6eb1470aeab4db57799 Mon Sep 17 00:00:00 2001
>> From: Marius Bakke <mbakke@fastmail.com>
>> Date: Thu, 20 Oct 2016 17:26:52 +0100
>> Subject: [PATCH] gnu: Add grub-efi.
>>
>> * gnu/packages/grub.scm (grub-efi): New variable.
>
> [...]
>
>> +    (name "grub-efi")
>> +    (synopsis (string-append (package-synopsis grub) " (UEFI version)"))
>
> Please use a literal string for ‘synopsis’; use of ‘string-append’ like
> this prevents i18n.
>
>> +     `(#:tests? #f ; FIXME: 40 failures, 24 skipped, 17 passed.
>
> It would be good to investigate, especially if the tests pass in the
> ‘grub’ package.
>
> Also, what’s the rationale for making ‘grub-efi’ separate instead of
> incorporating the changes in ‘grub’ proper?  Are there issues around the
> portability of ‘efibootmgr’, or an increased closure size?

This is a good point. The only difference with "--with-platform=efi" is
that another directory is created in place of the i386-pc directory. It
is perfectly possible to build multiple platforms and copying the
platform-specific stuff to $out/lib -- grub will pick the correct
platform at runtime. This is what the Gentoo ebuild does.

I'll give this a shot and send an updated patch later this week.