refactor: fonts (#194)

modules/darwin/default.nix

@@ -2,6 +2,6 @@
   imports =
     (mylib.scanPaths ./.)
     ++ [
-      ../base.nix
+      ../base
     ];
 }

modules/darwin/fonts.nix

@@ -1,22 +0,0 @@
-{pkgs, ...}: {
-  # Fonts
-  fonts = {
-    packages = with pkgs; [
-      # icon fonts
-      material-design-icons
-      font-awesome
-
-      source-sans # 无衬线字体，不含汉字。
-      source-serif # 衬线字体，不含汉字。
-      source-han-sans # 思源黑体
-      source-han-serif # 思源宋体
-
-      # nerdfonts
-      # https://github.com/NixOS/nixpkgs/blob/nixos-unstable-small/pkgs/data/fonts/nerd-fonts/manifests/fonts.json
-      nerd-fonts.symbols-only # symbols icon only
-      nerd-fonts.fira-code
-      nerd-fonts.jetbrains-mono
-      nerd-fonts.iosevka
-    ];
-  };
-}