bug#41344: Font broken in GUI application with guix pack

bug#41344: Font broken in GUI application with guix pack

[Alexandros Theodotou]

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Hi,

This is the command I ran to generate a pack:
guix pack -RR -S /opt/zrythm/bin=bin -L . zrythm

I then tried moving this pack to a VM running another distro
(archlinux) and all letters are shown as boxes. I have asked other
people to test it on other distros, including debian, and they reported
the same issue.

I am not exactly sure what is missing. Attaching a screenshot of what
it looks like.

I tried adding a propagated input for font-cantarell, font-gnu-freefont 
and font-dejavu just to see if it would work, without success.

Thanks,
Alex

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bug#41344: Font broken in GUI application with guix pack

[Ludovic Courtès]

Hi,

Alexandros Theodotou <alex@zrythm.org> skribis:

> This is the command I ran to generate a pack:
> guix pack -RR -S /opt/zrythm/bin=bin -L . zrythm
>
> I then tried moving this pack to a VM running another distro
> (archlinux) and all letters are shown as boxes. I have asked other
> people to test it on other distros, including debian, and they reported
> the same issue.
>
> I am not exactly sure what is missing. Attaching a screenshot of what
> it looks like.
>
> I tried adding a propagated input for font-cantarell, font-gnu-freefont 
> and font-dejavu just to see if it would work, without success.

Did it work roughly before the ‘core-updates’ merge?

Our ‘fontconfig’ package searches ~/.guix-profile/share/fonts and
/run/current-system/profile/share/fonts by default, which obviously
doesn’t work on foreign distros.

As discussed on IRC, could you check “strace -f” the program and check
where it’s looking for fonts (TTFs?)?

Thanks,
Ludo’.

bug#41344: Font broken in GUI application with guix pack

[Alexandros Theodotou]

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> Did it work roughly before the ‘core-updates’ merge?

This is the first time I tried `guix pack` so I don't know.

> As discussed on IRC, could you check “strace -f” the program and
> check
> where it’s looking for fonts (TTFs?)?

I'm not really sure what to look for. Here is the strace -f output: 
https://www.zrythm.org/downloads/trace.text.tar.gz

The package I'm trying to pack is zrythm-next from here:
https://git.zrythm.org/cgit/guix-repo/tree/audio.scm

Thanks,
Alex

On Tue, 2020-05-19 at 15:43 +0200, Ludovic Courtès wrote:
> 
> 
> 
> Our ‘fontconfig’ package searches ~/.guix-profile/share/fonts and
> /run/current-system/profile/share/fonts by default, which obviously
> doesn’t work on foreign distros.
> 
> 
> 
> Thanks,
> Ludo’.

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bug#41344: Font broken in GUI application with guix pack

[Marius Bakke]

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Alexandros Theodotou <alex@zrythm.org> writes:

> Hi,
>
> This is the command I ran to generate a pack:
> guix pack -RR -S /opt/zrythm/bin=bin -L . zrythm
>
> I then tried moving this pack to a VM running another distro
> (archlinux) and all letters are shown as boxes. I have asked other
> people to test it on other distros, including debian, and they reported
> the same issue.
>
> I am not exactly sure what is missing. Attaching a screenshot of what
> it looks like.

Can you try the patch posted at
<https://lists.gnu.org/archive/html/guix-devel/2020-05/msg00281.html> ?

When no fonts are installed in the common Guix profiles, applications
only "see" the font hard-coded into fontconfig, which happens to be
broken[*] since the recent 'core-updates' merge for any application
using Pango (such as GTK+).

[*] because fontconfig currently uses "gs-fonts", which are bitmap only,
and Pango no longer supports bitmap fonts[**]
[**] https://gitlab.gnome.org/GNOME/pango/issues/386

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