GNU bug report logs - #63043
texlive-font-maps.drv build failure when profiles lacks texlive-* packages

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Message #25 received at 63043-done <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Cc: Ricardo Wurmus <rekado <at> elephly.net>, 63043-done <at> debbugs.gnu.org
Subject: Re: bug#63043: texlive-font-maps.drv build failure when profiles
 lacks texlive-* packages
Date: Thu, 04 May 2023 13:14:55 +0200

Hi Maxim,

Maxim Cournoyer <maxim.cournoyer <at> gmail.com> skribis:

> Ludovic Courtès <ludo <at> gnu.org> writes:

[...]

>>> That is equivalent, but it doesn't address the core problem in my
>>> opinion.  There's no use to run hooks for things which aren't propagated
>>> at the level of the profile, I think.  If texlive-base in is the
>>> profile, the person wants to use tex and friends.  But if it's wrapped
>>> by some package deep down, we shouldn't care.
>>>
>>> I see it the same way as when using libraries and compilers in a
>>> profile; the compiler (consumer) needs to be present else no search path
>>> is created.
>>>
>>> Does it make sense?
>>
>> I agree with the reasoning; I think it doesn’t apply to the GLib schemas
>> and GDK pixbuf caches though.
>
> It does, for the simple reasons that both GDK pixbufs and GLib schemas
> are collected using manifest-inputs, which means only direct inputs from
> the profile and the ones they propagate.  So if you look deep in the
> profile graph for the 'glib-compile-schemas' command, there is a chance
> that it is found while no schemas were collected, and this is the kind
> of case that'd lead to an empty derivation output (because there's no
> schema to compile).

Ah yes, that’s right.

I was looking at it the other way around: GLib and GDK caches need to be
built even if glib/gdk-pixbuf does not appear in the manifest.

>> For TeX Live font maps, maybe it applies, though I’m not entirely sure
>> (I wouldn’t be surprised if things other than ‘texlive-base’ are
>> consumers of font maps).  Plus, since the patch I proposed is simple,
>> I’m inclined to just do that.
>>
>> Thoughts?
>
> I still think that my proposition is better, but I don't mind if you
> apply your fix now and we revisit this at a later time.  If we get to
> it, this change could be reverted as it wouldn't be necessary anymore.

Right.

I pushed it as 916c6e5716bd14cb328f7dcce5405ba9100bb908.

Thanks,
Ludo’.

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