NixOS 26.05: Fonts missing / Noto Sans

nPrevail · June 3, 2026, 7:22pm

I’ve successfully upgraded to 26.05, however I ran into an issue for one flathub package I use: freefilesync

When I run the flatpak, I’m met with the following issue with the font characters:

I believe noto sans is missing:

flatpak run org.freefilesync.FreeFileSync

(FreeFileSync:2): Pango-WARNING **: 12:16:50.203: failed to create cairo scaled font, expect ugly output. the offending font is 'Noto Sans 9.999'

(FreeFileSync:2): Pango-WARNING **: 12:16:50.203: font_face status is: file not found

(FreeFileSync:2): Pango-WARNING **: 12:16:50.203: scaled_font status is: file not found

(FreeFileSync:2): Pango-WARNING **: 12:16:50.203: failed to create cairo scaled font, expect ugly output. the offending font is 'Noto Sans 9.999'

(FreeFileSync:2): Pango-WARNING **: 12:16:50.203: font_face status is: file not found

(FreeFileSync:2): Pango-WARNING **: 12:16:50.203: scaled_font status is: file not found

(FreeFileSync:2): Pango-WARNING **: 12:16:50.214: failed to create cairo scaled font, expect ugly output. the offending font is 'Noto Sans Bold 9.999'

(FreeFileSync:2): Pango-WARNING **: 12:16:50.214: font_face status is: file not found

(FreeFileSync:2): Pango-WARNING **: 12:16:50.214: scaled_font status is: file not found

(FreeFileSync:2): Pango-WARNING **: 12:16:50.215: failed to create cairo scaled font, expect ugly output. the offending font is 'Noto Sans Bold 9.999'

(FreeFileSync:2): Pango-WARNING **: 12:16:50.215: font_face status is: file not found

(FreeFileSync:2): Pango-WARNING **: 12:16:50.215: scaled_font status is: file not found

(FreeFileSync:2): Pango-WARNING **: 12:16:50.647: failed to create cairo scaled font, expect ugly output. the offending font is 'Noto Sans 9.999'

(FreeFileSync:2): Pango-WARNING **: 12:16:50.647: font_face status is: file not found

(FreeFileSync:2): Pango-WARNING **: 12:16:50.647: scaled_font status is: file not found

(FreeFileSync:2): Pango-WARNING **: 12:16:50.647: failed to create cairo scaled font, expect ugly output. the offending font is 'Noto Sans 9.999'

(FreeFileSync:2): Pango-WARNING **: 12:16:50.647: font_face status is: file not found

(FreeFileSync:2): Pango-WARNING **: 12:16:50.647: scaled_font status is: file not found

(FreeFileSync:2): Pango-WARNING **: 12:16:50.668: failed to create cairo scaled font, expect ugly output. the offending font is 'Noto Sans Bold 9.999'

(FreeFileSync:2): Pango-WARNING **: 12:16:50.668: font_face status is: file not found

(FreeFileSync:2): Pango-WARNING **: 12:16:50.668: scaled_font status is: file not found

I have the following in my nix config file:

#Install fonts
fonts.packages = with pkgs; [
	noto-fonts
	noto-fonts-cjk-sans
	noto-fonts-color-emoji
	liberation_ttf
	fira-code
	fira-code-symbols
	mplus-outline-fonts.githubRelease
	dina-font
	proggyfonts

How can I fix this?

TLATER · June 3, 2026, 8:13pm

This isn’t 26.05 specific, it’s a sandboxing thing: Fonts - Official NixOS Wiki

Also, is 26.06 a typo or did you switch to a channel that doesn’t exist? Or maybe change system.stateVersion thinking that does it? Double check /etc/os-release says what you expect it to.

nPrevail · June 3, 2026, 8:18pm

Typo indeed. Thanks!

I didn’t change the system.Stateversion . It’s on the same version I’ve used from when I first installed NixOS on this drive: system.stateVersion = “24.05”

How does one double check /etc/os-release?

I have this output:

GNU nano 9.0 /etc/os-release
ANSI_COLOR="0;38;2;126;186;228"
BUG_REPORT_URL="https://github.com/NixOS/nixpkgs/issues"
BUILD_ID="26.05.889.b51242d7d436"
CPE_NAME="cpe:/o:nixos:nixos:26.05"
DEFAULT_HOSTNAME=nixos
DOCUMENTATION_URL="https://nixos.org/learn.html"
HOME_URL="https://nixos.org/"
ID=nixos
ID_LIKE=""
IMAGE_ID=""
IMAGE_VERSION=""
LOGO="nix-snowflake"
NAME=NixOS
PRETTY_NAME="NixOS 26.05 (Yarara)"
SUPPORT_END="2026-12-31"
SUPPORT_URL="https://nixos.org/community.html"
VARIANT=""
VARIANT_ID=""
VENDOR_NAME=NixOS
VENDOR_URL="https://nixos.org/"
VERSION="26.05 (Yarara)"
VERSION_CODENAME=yarara
VERSION_ID="26.05"

TLATER · June 3, 2026, 8:20pm

By running cat /etc/os-release and reading, which given that you’re reading this you hopefully know how to do.

But if that really was just a typo you’re probably fine, just wanted to make sure you’re actually booting “26.06”, as you named it

TLATER · June 3, 2026, 8:24pm

Right, ninja edit. Here it is, you’re all good:

I will hold my jokes on that ability to read thing…

nPrevail · June 3, 2026, 9:52pm

Thanks again for sharing the location of this fix.

This was my solution:

If everything is mounted properly, but you still do not see fonts in flatpak app - force font cache recreation inside flatpak container: flatpak run --command=fc-cache <application id> -f -v

I just had to add the app ID: org.freefilesync.FreeFileSync

I’m not sure if this fixed it either, but I added it to my config prior to running the previous command in this post:

fonts.fontDir.enable = true;

DocBrown101 · June 4, 2026, 6:41am

I’m a little curious, why don’t you use pkgs.freefilesync?

nPrevail · June 4, 2026, 1:23pm

github.com/NixOS/nixpkgs

FreeFileSync: BUG: "Access blocked: Authorization Error"

opened 03:32PM - 27 Feb 25 UTC

nPrevail

0.kind: bug

### Nixpkgs version - Stable (24.11) ### Describe the bug Unable to use Googl…e Drive in FreeFileSync. This works fine when you run the `flatpak` version of FreeFileSync. ### Steps to reproduce Run FreeFileSync, select "accessing online storage," select Google Drive, select "Add Connection", your browser will open and will be met with the following Screenshot below ### Expected behaviour You won't be able to access Google Drive ### Screenshots ![Image](https://github.com/user-attachments/assets/974d7b58-0ef0-4e53-b3e9-dcf7dd35b071) ### Relevant log output ```console ``` ### Additional context _No response_ ### System metadata nix-shell -p nix-info --run "nix-info -m" - system: `"x86_64-linux"` - host os: `Linux 6.13.2, NixOS, 24.11 (Vicuna), 24.11.714876.5d7db4668d7a` - multi-user?: `yes` - sandbox: `yes` - version: `nix-env (Nix) 2.24.12` - channels(root): `"nixos-24.11"` - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos` ### Notify maintainers @wegank --- **Note for maintainers:** Please tag this issue in your pull request description. (i.e. `Resolves #ISSUE`.) ### I assert that this issue is relevant for Nixpkgs - [x] I assert that this is a bug and not a support request. - [x] I assert that this is not a [duplicate of an existing issue](https://github.com/NixOS/nixpkgs/issues?q=is%3Aopen+is%3Aissue+label%3A%220.kind%3A+bug%22+-label%3A%226.topic%3A+darwin%22+-label%3A%226.topic%3A+nixos%22). - [x] I assert that I have read the [NixOS Code of Conduct](https://github.com/NixOS/.github/blob/master/CODE_OF_CONDUCT.md) and agree to abide by it. ### Is this issue important to you? Add a :+1: [reaction] to [issues you find important]. [reaction]: https://github.blog/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/ [issues you find important]: https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc

Although the person’s response on 04/18/26 is news to me. I have yet to look into it.