[Bug]: Ubuntu, setting Font Family leads to very stretched looking output

[coffeefedora]

Current Behavior

Downloaded the appimage build of Wave:
Client Version 0.10.4 (202412210242)
Update Channel: latest

Running on Ubuntu 22.04.5 LTS (codename jammy)

when i change the font family to JetBrains Mono NF, the terminal displays characters with very wide spacing, and blurry.
This font is installed and working in my other terminals.

my ~/.config/waveterm/settings.json:

{
  "autoupdate:channel": "latest",
  "telemetry:enabled": false,
  "term:fontfamily": "JetBrains Mono NF"
}

Expected Behavior

pretty terminal output

Steps To Reproduce

install JetBrains Mono NF, update settings.json

{
  "autoupdate:channel": "latest",
  "telemetry:enabled": false,
  "term:fontfamily": "JetBrains Mono NF"
}

restart wave, type ls in term, cry!

Wave Version

0.10.4

Platform

Linux

OS Version/Distribution

Ubuntu 22.04.5 LTS

Architecture

x64

Anything else?

No response

Questionnaire

• I'm interested in fixing this myself but don't know where to start
• I would like to fix and I have a solution
• I don't have time to fix this right now, but maybe later

[sawka]

looking at the screenshot it doesn't look like JetBrains Mono (or NF version), it looks like a terrible monospace fallback font. Is JetBrains Mono NF installed on your system directly?

So I downloaded the JetBrains Mono NF from https://www.nerdfonts.com/font-downloads . and then looked at the font family with fc-query ~/Downloads/JetBrainsMono/JetBrainsMonoNerdFontMono-Regular.ttf | grep family and got

        family: "JetBrainsMono Nerd Font Mono"(s) "JetBrainsMono NFM"(s)
        familylang: "en"(s) "en"(s)

so I think if say you were using that font, you'd want to set term:fontfamily to "JetBrainsMono NFM"? My guess is that the font family name you're specifying in term:fontfamily isn't matching the TTF file exactly.