Hi Guix! I have a patch waiting (https://issues.guix.gnu.org/59975) that will change progress bars to use some unicode characters. I think they look better, but I'm a bit afraid they might not look right on some config, so I'd like to know if your terminal is able to show these characters:
"▏▎▍▌▋▊▉█▏▕" If you are not using a unicode locale, this change will not affect you as guix will fallback to the ascii style. If your terminal can't show these characters and you have a UTF-8 locale (you'd run echo $LANG to know that), please report your config (name of terminal app, locale, fonts, …)!