1{lib, ...}: {
 2  den.aspects.desktop.style.fonts = {
 3    settings = let
 4      inherit (lib) mkOption types;
 5
 6      fontType = types.submodule {
 7        options = {
 8          name = mkOption {
 9            type = types.str;
10          };
11          package = mkOption {
12            type = types.functionTo types.package;
13            example = lib.literalExpression "pkgs: pkgs.dejavu_fonts";
14          };
15        };
16      };
17    in {
18      sizes = {
19        applications = mkOption {
20          type = types.ints.positive;
21          default = 12;
22        };
23        desktop = mkOption {
24          type = types.ints.positive;
25          default = 12;
26        };
27        terminal = mkOption {
28          type = types.ints.positive;
29          default = 12;
30        };
31      };
32      serif = mkOption {
33        type = types.listOf fontType;
34        default = [
35          {
36            name = "Noto Serif CJK SC";
37            package = pkgs: pkgs.noto-fonts-cjk-serif;
38          }
39        ];
40      };
41      sansSerif = mkOption {
42        type = types.listOf fontType;
43        default = [
44          {
45            name = "Sarasa Gothic SC";
46            package = pkgs: pkgs.sarasa-gothic;
47          }
48          {
49            name = "Noto Sans CJK SC";
50            package = pkgs: pkgs.noto-fonts-cjk-sans;
51          }
52        ];
53      };
54      monospace = mkOption {
55        type = types.listOf fontType;
56        default = [
57          {
58            name = "Maple Mono NF CN";
59            package = pkgs: pkgs.maple-mono.NF-CN;
60          }
61        ];
62      };
63      emoji = mkOption {
64        type = types.listOf fontType;
65        default = [
66          {
67            name = "Noto Color Emoji";
68            package = pkgs: pkgs.noto-fonts-color-emoji;
69          }
70        ];
71      };
72    };
73
74    nixos = {
75      host,
76      pkgs,
77      ...
78    }: let
79      cfg = host.settings.desktop.style.fonts;
80    in {
81      fonts = {
82        enableDefaultPackages = false;
83        fontDir.enable = true;
84
85        packages =
86          (map (x: x.package pkgs)
87            (lib.concatMap (x: cfg.${x}) ["serif" "sansSerif" "monospace" "emoji"]))
88          ++ (with pkgs; [
89            dejavu_fonts
90            noto-fonts-lgc-plus
91          ]);
92        fontconfig.defaultFonts =
93          lib.genAttrs ["serif" "sansSerif" "monospace" "emoji"]
94          (x: lib.unique (map (x: x.name) cfg.${x}));
95      };
96    };
97  };
98}