feat: added derivations

overlays/default.nix

@@ -6,6 +6,7 @@
         basicTextColor = "#f2f4f8";
       };
     };
+    fairfax = prev.callPackage ./derivations/fairfax.nix {};
   };
   perSystem = {
     pkgs,
@@ -20,7 +21,7 @@
     };
 
     packages = {
-      inherit (pkgs) i-found-my-sddm-theme;
+      inherit (pkgs) i-found-my-sddm-theme fairfax;
     };
   };
 }

overlays/derivations/fairfax.nix

@@ -0,0 +1,21 @@
+{
+  stdenvNoCC,
+  fetchzip,
+  lib,
+}:
+stdenvNoCC.mkDerivation {
+  pname = "fairfaxHD";
+  version = "20240601";
+  src = lib.cleanSourceWith {
+    filter = _path: type: type == "regular";
+    src = fetchzip {
+      url = "https://github.com/kreativekorp/open-relay/releases/download/2024-06-01/FairfaxHD.zip";
+      hash = "sha256-kwdpWFOYhXt0HNqfWP3EeKYhJWgKsRs7cAbzHEasM80=";
+      stripRoot = true;
+    };
+  };
+  installPhase = ''
+    mkdir -p $out/share/fonts
+    cp *.ttf $out/share/fonts
+  '';
+}