[bug#52956] [PATCH] gnu: darktable: update to 3.8.0

[Alex Devaure <ajadevaure@gmail.com>]

Hi John and Ludovic,

John Kehayias <john.kehayias@protonmail.com> writes:

> Hello,
>
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
>
> On Saturday, January 8th, 2022 at 4:59 PM, Ludovic Courtès <ludo@gnu.org> wrote:
>
>> Hi John and Alex,
>>
>> John Kehayias john.kehayias@protonmail.com skribis:
>>
>> > Thanks for the update to darktable. However, I noticed in the
>> > release notes that darktable now requires Lua 5.4 (we only have
>> > 5.3.5). When I tried my own update locally I could see that Lua
>> > support, needed for plugins, was disabled at configure due to the
>> > missing Lua 5.4 version.
>> >
>> > Release notes: https://www.darktable.org/2021/12/darktable-3.8.0-released/
>> >
>> > I think it would be best to have the newer Lua version so we don't lose plugin support. Is there a patch for Lua 5.4 for Guix (my quick search didn't fine one)?
>>
>> Indeed. I don’t see Lua 5.4 in the patch queue at issues.guix.gnu.org.
>> Does one of you want to give it a try?
>>
> I just tried a guix build lua --with-latest=lua and it built version
> 5.4.3 without any issue (even with the patches it has). I don't know
> anything to test with Lua, but in a guix shell it reported the correct
> version and the interpreter ran (I looked up a simple print statement
> which did work).
>
> If there's nothing in particular I should look for, I can submit a quick patch for this. Should the package be lua-5.4 or maybe lua-next? And should the current lua now inherit from this latest version?
>
> I'm assuming for the lua system to be updated would need a staging or
> core-updates cycle, with guix refresh lua -l reporting "408 packages
> would ensure 782 dependent packages are rebuilt". So we wouldn't want
> to replace "lua" with 5.4.3 yet.
>
> John

I managed to build darktable with the last lua version (4.5.3) but I
needed to update the patched for that version.
During that process, I came to the same question than John's: what is
the best and least disturbing way to add lua 4.5.3?

Kind regards,
Alex