diff --git a/pkgs/by-name/qu/QuadProgpp/package.nix b/pkgs/by-name/qu/quadprogpp/package.nix
similarity index 100%
rename from pkgs/by-name/qu/QuadProgpp/package.nix
rename to pkgs/by-name/qu/quadprogpp/package.nix
diff --git a/pkgs/development/haskell-modules/hackage-packages.nix b/pkgs/development/haskell-modules/hackage-packages.nix
index 028dae8f8bfb..fac1c4325b9a 100644
--- a/pkgs/development/haskell-modules/hackage-packages.nix
+++ b/pkgs/development/haskell-modules/hackage-packages.nix
@@ -342110,7 +342110,7 @@ self: {
       description = "Bindings to the QuadProg++ quadratic programming library";
       license = lib.licenses.bsd3;
     }
-  ) { quadprogpp = null; };
+  ) { inherit (pkgs) quadprogpp; };
 
   hmatrix-repa = callPackage (
     {
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 39e674b6a9e5..9ba78dd9f0c9 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1699,6 +1699,7 @@ mapAliases {
   qt-video-wlr = throw "'qt-video-wlr' has been removed, as it depends on KDE Gear 5, which has reached EOL"; # Added 2025-08-20
   qtchan = throw "'qtchan' has been removed due to lack of maintenance upstream"; # Added 2025-07-01
   qtile-unwrapped = throw "'qtile-unwrapped' has been renamed to/replaced by 'python3.pkgs.qtile'"; # Converted to throw 2025-10-27
+  QuadProgpp = warnAlias "'QuadProgpp' has been renamed to 'quadprogpp'" quadprogpp; # Added 2026-02-12
   quantum-espresso-mpi = throw "'quantum-espresso-mpi' has been renamed to/replaced by 'quantum-espresso'"; # Converted to throw 2025-10-27
   quaternion-qt5 = throw "'quaternion-qt5' has been removed as quaternion dropped Qt5 support with v0.0.97.1"; # Added 2025-05-24
   quaternion-qt6 = warnAlias "'quaternion-qt6 has been renamed to quaternion" quaternion; # Added 2025-12-31