style/fonts: add fancy-iosevka once again

modules/style/fonts.nix

@@ -1,5 +1,45 @@
 {pkgs, ...}: let
   inherit (builtins) mapAttrs;
+
+  fancy-iosevka = pkgs.iosevka.override {
+    privateBuildPlan = {
+      family = "fancy-iosevka";
+      spacing = "term";
+      serifs = "sans";
+      noCvSs = true;
+      exportGlyphNames = false;
+
+      ligations.inherits = "dlig";
+      variants = {
+        inherits = "ss15";
+        design = {
+          e = "flat-crossbar";
+          f = "diagonal-tailed-crossbar-at-x-height";
+        };
+      };
+      weights.Regular = {
+        shape = 400;
+        menu = 400;
+        css = 400;
+      };
+      weights.Bold = {
+        shape = 700;
+        menu = 700;
+        css = 700;
+      };
+      widths.Condensed = {
+        shape = 500;
+        menu = 3;
+        css = "condensed";
+      };
+      widths.normal = {
+        shape = 600;
+        menu = 5;
+        css = "normal";
+      };
+    };
+    set = "Fancy";
+  };
 in {
   # A (somewhat) sane list of fonts to be installed.
   fonts = {
@@ -55,6 +95,8 @@ in {
         comic-shanns-mono
         symbols-only
         ;
+
+      inherit fancy-iosevka;
     };
     fontDir = {
       # Whether to create a directory with links to all fonts in