Move font packages to correct config option & add custom build of iosevka

overlay.nix

@@ -59,4 +59,30 @@ with inputs;
         prev.pkgs.temurin-jre-bin
       ];
     };
+
+    iosevka = prev.iosevka.override {
+      set = "Custom";
+
+      privateBuildPlan = {
+        family = "IosevkaCustom";
+        spacing = "term";
+        serifs = "sans";
+        noCvSs = false;
+        exportGlyphNames = true;
+        variants.inherits = "ss05";
+
+        weights = {
+          Regular = {
+            shape = 400;
+            menu = 400;
+            css = 400;
+          };
+          Bold = {
+            shape = 700;
+            menu = 700;
+            css = 700;
+          };
+        };
+      };
+    };
   }

suites/desktop/default.nix

@@ -117,9 +117,6 @@ with lib; {
     gnomeExtensions.smile-complementary-extension
     jellyfin-media-player
     libreoffice
-    merriweather
-    merriweather-sans
-    nerd-fonts
     obsidian
     prismlauncher
     prismlauncher
@@ -129,6 +126,11 @@ with lib; {
     yubioath-flutter
   ];
 
+  fonts.packages = with pkgs; [
+    merriweather
+    iosevka
+  ];
+
   # Allow opening terminal applications from gnome app launcher.
   xdg.terminal-exec = {
     enable = true;