[bug#59975] [PATCH] guix: Show better progress bars.

[Julien Lepiller]

Le Fri, 13 Jan 2023 18:07:42 +0100,
Ludovic Courtès <ludo@gnu.org> a écrit :

> Hello!
> 
> Julien Lepiller <julien@lepiller.eu> skribis:
> 
> > Hi Guix!
> >
> > The attached patch is a small improvement on our progress bars.
> > Instead of our cute ASCII art:
> >
> > 1.2MiB/s 00:04 [###               ]  18.5%
> >
> > We get something a little more smooth:
> >
> > 1.1MiB/s 00:04 ▕███               ▏  17.1%
> > 1.2MiB/s 00:05 ▕███▋              ▏  20.7%
> >
> > Using unicode characters that can represent 1/8 of a character
> > width.  
> 
> Woow, fancy!  Love it!!  Too bad I was too late to have it under the
> Newtonmas tree. 🎄
> 
> > I used port-encoding to detect when the output supports unicode, but
> > maybe there's something more dedicated to figuring that out? When
> > the port encoding is not UTF-8, we fall back to the ASCII version.  
> 
> One question: how likely is it that people won’t have a font with
> those glyphs to display it correctly?
> 
> It would be good to check in xterm, Linux console with some default
> font, and GNOME/Xfce terminals with defaults.
> 
> (Works for me in xterm and in Emacs, FWIW.)

I think it's pretty common to have these characters, since they are
used by many other projects. However, testing on a tty, I can only see
the filled characters, but not the semi-filled ones, so I get something
like:

?███?     ?

What do you think?

Attached v2.

0001-guix-Show-better-progress-bars.patch
Description: Text Data