ultra-scroll is amazing!!

user/app/emacs/default.nix

@@ -26,6 +26,7 @@
         nix-mode
         python python-mode
         lsp-mode flycheck lsp-ui lsp-treemacs
+        (epkgs.callPackage ./ultra-scroll.nix {})
       ];
     })
     fira-code

user/app/emacs/init.el

@@ -114,12 +114,15 @@
 
                                ;; Mouse & Smooth Scroll
                                (setq scroll-step 1
-                                     scroll-margin 1
+                                     scroll-margin 0
                                      scroll-conservatively 101
                                      scroll-preserve-screen-position nil
                                      redisplay-skip-fontification-on-input t)
 			       (pixel-scroll-precision-mode 1)
 
+                               (require 'ultra-scroll)
+                               (ultra-scroll-mode 1)
+
                                ;; Line numbers
                                (setq display-line-numbers-type t
                                      line-move-visual t)

user/app/emacs/ultra-scroll.nix

@@ -0,0 +1,19 @@
+{ lib, fetchurl, trivialBuild }:
+
+trivialBuild {
+  pname = "ultra-scroll";
+  version = "0.2.0";
+
+  src = fetchGit {
+    url = "https://github.com/jdtsmith/ultra-scroll.git";
+    rev = "64ad7be02e11317576498dabb15c92cf31e2c04c";
+    ref = "main";
+  };
+
+  meta = with lib; {
+    description = "scroll Emacs like lightning";
+    homepage = "https://github.com/jdtsmith/ultra-scroll";
+    license = licenses.gpl3;
+    platforms = platforms.all;
+  };
+}