diff --git a/pkgs/by-name/ta/tau-hydrogen/package.nix b/pkgs/by-name/ta/tau-hydrogen/package.nix
deleted file mode 100644
index e4fbc333a48e..000000000000
--- a/pkgs/by-name/ta/tau-hydrogen/package.nix
+++ /dev/null
@@ -1,36 +0,0 @@
-{
-  stdenv,
-  lib,
-  fetchFromGitHub,
-  meson,
-  ninja,
-  librsvg,
-  xcursorgen,
-}:
-
-stdenv.mkDerivation (finalAttrs: {
-  pname = "tau-hydrogen";
-  version = "1.0.16";
-
-  src = fetchFromGitHub {
-    owner = "tau-OS";
-    repo = "tau-hydrogen";
-    rev = finalAttrs.version;
-    hash = "sha256-nnQ0lkHtkOjJhF4NSMqjt0deddYjMnHHlANlHoZS2wY=";
-  };
-
-  nativeBuildInputs = [
-    meson
-    ninja
-    librsvg
-    xcursorgen
-  ];
-
-  meta = {
-    description = "GTK icon theme for tauOS";
-    homepage = "https://github.com/tau-OS/tau-hydrogen";
-    license = lib.licenses.gpl3Only;
-    platforms = lib.platforms.unix;
-    maintainers = [ ];
-  };
-})
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 92cd669ee0c1..51f9ad50a19a 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -2000,6 +2000,7 @@ mapAliases {
   targetPlatform = warnAlias "'targetPlatform' has been renamed to/replaced by 'stdenv.targetPlatform'" stdenv.targetPlatform; # Converted to warning 2025-10-28
   taro = throw "'taro' has been renamed to/replaced by 'taproot-assets'"; # Converted to throw 2025-10-27
   taskwarrior = throw "'taskwarrior' has been renamed to/replaced by 'taskwarrior2'"; # Converted to throw 2025-10-27
+  tau-hydrogen = throw "'tau-hydrogen' has been removed because it's unmaintained upstream."; # Added 2026-04-26
   tbb = onetbb; # Added 2025-09-14
   tbb_2020 = throw "tbb_2020 has been removed because it is unmaintained upstream and had no remaining users; use onetbb"; # Added 2025-09-14
   tbb_2021 = throw "tbb_2021 has been removed because it is unmaintained upstream and had no remaining users; use onetbb"; # Added 2025-09-13