collada2gltf: drop

Vendors outdated dependencies that don’t build with supported
compilers. I tried my best to devendor, but I was unable to get it
building, and upstream has not been active in half a decade.

pkgs/by-name/co/collada2gltf/package.nix

@@ -1,39 +0,0 @@
-{
-  fetchFromGitHub,
-  gcc10Stdenv,
-  lib,
-  cmake,
-}:
-gcc10Stdenv.mkDerivation rec {
-  pname = "COLLADA2GLTF";
-  version = "2.1.5";
-
-  src = fetchFromGitHub {
-    owner = "KhronosGroup";
-    repo = "COLLADA2GLTF";
-    tag = "v${version}";
-    hash = "sha256-3Eo1qS6S5vlc/d2WB4iDJTjUnwMUrx9+Ln6n8PYU5qA=";
-    fetchSubmodules = true;
-  };
-
-  installPhase = ''
-    runHook preInstall
-
-    install -Dm755 COLLADA2GLTF-bin $out/bin/COLLADA2GLTF
-
-    runHook postInstall
-  '';
-
-  nativeBuildInputs = [
-    cmake
-  ];
-
-  meta = {
-    description = "Command-line tool to convert COLLADA (.dae) files to glTF";
-    homepage = "https://github.com/KhronosGroup/COLLADA2GLTF";
-    license = lib.licenses.bsd3;
-    mainProgram = "COLLADA2GLTF";
-    maintainers = with lib.maintainers; [ shaddydc ];
-    platforms = with lib.platforms; unix ++ windows;
-  };
-}

pkgs/top-level/aliases.nix

@@ -626,6 +626,7 @@ mapAliases {
   code-browser-gtk2 = throw "'code-browser-gtk2' has been removed, as it was broken since 22.11"; # Added 2025-08-22
   code-browser-qt = throw "'code-browser-qt' has been removed, as it was broken since 22.11"; # Added 2025-08-22
   collada-dom = opencollada; # added 2024-02-21
+  collada2gltf = throw "collada2gltf has been removed from Nixpkgs, as it has been unmaintained upstream for 5 years and does not build with supported GCC versions"; # Addd 2025-08-08
   colloid-kde = throw "'colloid-kde' has been removed, as it is only compatible with Plasma 5, which is EOL"; # Added 2025-08-20
   colorpicker = throw "'colorpicker' has been removed due to lack of maintenance upstream. Consider using 'xcolor', 'gcolor3', 'eyedropper' or 'gpick' instead"; # Added 2024-10-19
   colorstorm = throw "'colorstorm' has been removed because it was unmaintained in nixpkgs and upstream was rewritten."; # Added 2025-06-15