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Add read permission to /run/current-system/sw/share/X11/fonts:ro to grant access to the link chain with some misc typo fixes.
m make it clearer what nix-instantiate is doing to filter out the nerdfonts
 
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Despite looking like normal packages, simply adding these font packages to your <code>environment.systemPackages</code> won't make the fonts accessible to applications. To achieve that, put these packages in the <code>[https://search.nixos.org/options?channel=unstable&show=fonts.packages&from=0&size=50&sort=relevance&type=packages&query=fonts.packages fonts.packages]</code> NixOS options list instead.
Despite looking like normal packages, simply adding these font packages to your <code>environment.systemPackages</code> won't make the fonts accessible to applications. To achieve that, put these packages in the <code>[https://search.nixos.org/options?channel=unstable&show=fonts.packages&from=0&size=50&sort=relevance&type=packages&query=fonts.packages fonts.packages]</code> NixOS options list instead.
'''Note''': for 23.05 or older, <code>fonts.packages</code> is called <code>fonts.fonts</code> instead.


''For example:''  
''For example:''  
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fonts.packages = with pkgs; [
fonts.packages = with pkgs; [
   noto-fonts
   noto-fonts
   noto-fonts-cjk
   noto-fonts-cjk-sans
   noto-fonts-emoji
   noto-fonts-emoji
   liberation_ttf
   liberation_ttf
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* <code>fonts.enableGhostscriptFonts</code>: affects the <code>ghostscript</code> package. Ghostscript packages some URW fonts for the standard PostScript typefaces. If <code>true</code>, these fonts will be visible to GUI applications. You could set it to <code>true</code> if you want these fonts, but <code>gyre-fonts</code> (part of <code>fonts.enableDefaultPackages</code>) might be higher-quality depending on your judgement.
* <code>fonts.enableGhostscriptFonts</code>: affects the <code>ghostscript</code> package. Ghostscript packages some URW fonts for the standard PostScript typefaces. If <code>true</code>, these fonts will be visible to GUI applications. You could set it to <code>true</code> if you want these fonts, but <code>gyre-fonts</code> (part of <code>fonts.enableDefaultPackages</code>) might be higher-quality depending on your judgement.


=== Installing specific fonts from nerdfonts ===
=== Installing <code>nerdfonts</code> ===
The <code>nerdfonts</code> package, which contains all fonts from the [https://www.nerdfonts.com/ nerdfonts] repository is quite large and contains a large number of fonts which take some time to install. If you only need a selection of fonts from the package, you can overwrite the font selection on Stable 20.09 like so:
 
Individual Nerd Fonts can be installed like so:
 
<syntaxhighlight lang="nix">fonts.packages = with pkgs; [
  nerd-fonts.fira-code
  nerd-fonts.droid-sans-mono
];</syntaxhighlight>
 
The available Nerd Font subpackages can be listed by searching for {{nixos:package|nerd-fonts.*}} on the [[Searching packages|NixOS Package Search]] or by running the following command: <pre>nix-instantiate --eval --expr "with (import <nixpkgs> {}); lib.attrNames (lib.filterAttrs (_: lib.isDerivation) nerd-fonts)"</pre>


<syntaxhighlight lang="nix">
==== Installing all <code>nerdfonts</code> ====
fonts.packages = with pkgs; [
 
  (nerdfonts.override { fonts = [ "FiraCode" "DroidSansMono" ]; })
Installing all fonts from the [https://www.nerdfonts.com/ Nerd Fonts repository] is as simple as adding all of the individual packages to the NixOS configuration. The following line will do exactly that, by searching for all derivations under the <code>nerd-font</code> attribute:{{file|/etc/nixos/configuration.nix|nix|<nowiki>
];
{
  fonts.packages = builtins.filter lib.attrsets.isDerivation (builtins.attrValues pkgs.nerd-fonts)
}
</nowiki>}}
 
=== Let Fontconfig know the fonts within your Nix profile ===
Nix inserts its user profile path into <code>$XDG_DATA_DIRS</code>, which Fontconfig by default doesn't look in. This cause graphical applications like KDE Plasma not able to recognize the fonts installed via <code>nix-env</code> or <code>nix profile</code>.
 
To solve this, add the file <code>100-nix.conf</code> to your Fontconfig user configuration directory (usually <code>$XDG_CONFIG_HOME/fontconfig/conf.d</code>):
<syntaxhighlight lang="xml">
<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "urn:fontconfig:fonts.dtd">
<fontconfig>
  <!-- NIX_PROFILE is the path to your Nix profile. See Nix Reference Manual for details. -->
  <dir>NIX_PROFILE/lib/X11/fonts</dir>
  <dir>NIX_PROFILE/share/fonts</dir>
</fontconfig>
</syntaxhighlight>
</syntaxhighlight>
and run <code>fc-cache</code>.


This will cause NixOS to download only the [https://github.com/ryanoasis/nerd-fonts/tree/master/patched-fonts/FiraCode Fira Code] and [https://github.com/ryanoasis/nerd-fonts/tree/master/patched-fonts/DroidSansMono Droid Sans Mono] fonts from [https://github.com/ryanoasis/nerd-fonts nerd-fonts] instead of the whole package. The relevant names can be found by looking at the file name for your relevant font on the [https://github.com/ryanoasis/nerd-fonts/releases official release page] assets.
Alternatively, [https://nix-community.github.io/home-manager/options.xhtml#opt-fonts.fontconfig.enable enable Fontconfig configuration] in your Home Manager configuration.


=== Imperative installation of user fonts ===
=== Imperative installation of user fonts ===
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=== Flatpak applications can't find system fonts ===
=== Flatpak applications can't find system fonts ===


First, enable <code>fontDir</code> in your NixOS configuration:
To expose available fonts under <code>/run/current-system/sw/share/X11/fonts</code>, enable <code>fontDir</code> in your NixOS configuration.
<syntaxhighlight lang="nix">
<syntaxhighlight lang="nix">
fonts.fontDir.enable = true;
fonts.fontDir.enable = true;
</syntaxhighlight>
</syntaxhighlight>You will then need to link/copy this folder to one of the Flatpak-supported locations - see below.


==== Best Solution: Just copy necessary fonts to <code>$HOME/.local/share/fonts</code> ====
==== Solution 1: Copy fonts to <code>$HOME/.local/share/fonts</code> ====
Create fonts directory <code>$HOME/.local/share/fonts</code> and copy system fonts with option <code>-L, --dereference</code> .<syntaxhighlight lang="bash">
Create fonts directory <code>$HOME/.local/share/fonts</code> and copy system fonts with option <code>-L, --dereference</code>. You will need to repeat this step whenever the fonts change.<syntaxhighlight lang="bash">
mkdir $HOME/.local/share/fonts && cp -L /run/current-system/sw/share/X11/fonts/* $HOME/.local/share/fonts/
mkdir $HOME/.local/share/fonts && cp -L /run/current-system/sw/share/X11/fonts/* $HOME/.local/share/fonts/
</syntaxhighlight>Note: There is '''no need''' to grant flatpak applications access to <code>$HOME/.local/share/fonts</code>.  
</syntaxhighlight>Note: There is no need to grant flatpak applications access to <code>$HOME/.local/share/fonts</code>.  


Instead, if you do that, some applications (for example, steam) won't work.<blockquote>Internals: How it works?
Instead, if you do that, some applications (for example, steam) won't work.<blockquote>Internals: How it works?
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</syntaxhighlight>Then flatpak application can read fonts from that to display contents correctly.</blockquote>
</syntaxhighlight>Then flatpak application can read fonts from that to display contents correctly.</blockquote>


==== Another Method: Create symlink to system fonts at  <code>$HOME/.local/share/fonts</code> ====
==== Solution 2: Symlink to system fonts at  <code>$HOME/.local/share/fonts</code> ====
<blockquote>'''Note:''' this method doesn't work for some flatpak applications (for example, steam)!
<blockquote>'''Note:''' this method doesn't work for some flatpak applications (for example, steam)!  


Error: <syntaxhighlight lang="console">
Error: <syntaxhighlight lang="console">
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Now you have two options.
Now you have two options.


===== Option 1: allow the Flatpaks to access the font folder and <code>/nix/store</code> =====
===== Option 1: Allow access to the fonts folder and <code>/nix/store</code> =====
By using the Flatpak CLI or the Flatseal Flatpak make the following directory available to all Flatpaks <code>$HOME/.local/share/fonts</code> and <code>$HOME/.icons</code> the appropriate commands for this are:
By using the Flatpak CLI or the Flatseal Flatpak make the following directory available to all Flatpaks <code>$HOME/.local/share/fonts</code> and <code>$HOME/.icons</code> the appropriate commands for this are:


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</syntaxhighlight>
</syntaxhighlight>


===== Option 2: allow the Flatpaks to access the WHOLE filesystem =====
===== Option 2: Allow access to the WHOLE filesystem =====
Allow them access the WHOLE filesystem of yours: <code>All system files</code> in Flatseal or equivalently <code>filesystem=host</code> available to your application, the command for this is:
Allow them access the WHOLE filesystem of yours: <code>All system files</code> in Flatseal or equivalently <code>filesystem=host</code> available to your application, the command for this is:


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It is important to keep in mind that some flatpak apps may refuse to launch if given certain permissions, such as the Steam flatpak.  
It is important to keep in mind that some flatpak apps may refuse to launch if given certain permissions, such as the Steam flatpak.  


=== Using bindfs for font support ===
==== Solution 3: Configure bindfs for fonts/cursors/icons support ====
Alternatively, you can expose relevant packages directly under <code>/usr/share/...</code> paths. This will also enable Flatpak to use a custom cursor theme if you have one. This solution doesn't require <code>fonts.fontDir.enable</code> to be enabled.<syntaxhighlight lang="nix">
  system.fsPackages = [ pkgs.bindfs ];


<syntaxhighlight lang="nix">
  system.fsPackages = [ pkgs.bindfs ];
   fileSystems = let
   fileSystems = let
     mkRoSymBind = path: {
     mkRoSymBind = path: {
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       options = [ "ro" "resolve-symlinks" "x-gvfs-hide" ];
       options = [ "ro" "resolve-symlinks" "x-gvfs-hide" ];
     };
     };
     aggregatedIcons = pkgs.buildEnv {
     aggregated = pkgs.buildEnv {
      name = "system-icons";
        name = "system-fonts-and-icons";
      paths = with pkgs; [
        paths = config.fonts.packages ++ (with pkgs; [
        #libsForQt5.breeze-qt5  # for plasma
          # Add your cursor themes and icon packages here
        gnome.gnome-themes-extra
          bibata-cursors
      ];
          gnome.gnome-themes-extra
      pathsToLink = [ "/share/icons" ];
          # etc.
    };
        ]);
    aggregatedFonts = pkgs.buildEnv {
        pathsToLink = [ "/share/fonts" "/share/icons" ];
      name = "system-fonts";
      paths = config.fonts.packages;
      pathsToLink = [ "/share/fonts" ];
     };
     };
   in {
   in {
     "/usr/share/icons" = mkRoSymBind "${aggregatedIcons}/share/icons";
     "/usr/share/fonts" = mkRoSymBind "${aggregated}/share/fonts";
     "/usr/local/share/fonts" = mkRoSymBind "${aggregatedFonts}/share/fonts";
     "/usr/share/icons" = mkRoSymBind "${aggregated}/share/icons";
   };
   };


   fonts = {
   fonts.packages = with pkgs; [
    fontDir.enable = true;
    noto-fonts
    packages = with pkgs; [
    noto-fonts-emoji
      noto-fonts
    noto-fonts-cjk
      noto-fonts-emoji
  ];
      noto-fonts-cjk
</syntaxhighlight>
    ];
=== Noto Color Emoji doesn't render on Firefox ===
  };
 
Enable <code>useEmbeddedBitmaps</code> in your NixOs configuration.
<syntaxhighlight lang="nix">
fonts.fontconfig.useEmbeddedBitmaps = true;
</syntaxhighlight>
</syntaxhighlight>


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[[Category:Configuration]]
[[Category:Configuration]]
[[Category:Desktop]]
[[Category:Desktop]]
[[Category:Fonts]]
Retrieved from "https://wiki.nixos.org/wiki/Fonts"