cudaPackages_{11,12_0,12_1,12_2,12_3,12_4,12_5}: drop

doc/languages-frameworks/cuda.section.md

@@ -12,11 +12,11 @@ Nixpkgs provides a number of CUDA package sets, each based on a different CUDA r
 - `cudaPackages_x`: A major-versioned alias to the major-minor-versioned CUDA package set with the latest widely supported major CUDA release.
 - `cudaPackages`: An unversioned alias to the major-versioned alias for the latest widely supported CUDA release. The package set referenced by this alias is also referred to as the "default" CUDA package set.
 
-It is recommended to use the unversioned `cudaPackages` attribute. While versioned package sets are available (e.g., `cudaPackages_12_2`), they are periodically removed.
+It is recommended to use the unversioned `cudaPackages` attribute. While versioned package sets are available (e.g., `cudaPackages_12_8`), they are periodically removed.
 
 Here are two examples to illustrate the naming conventions:
 
-- If `cudaPackages_12_8` is the latest release in the 12.x series, but core libraries like OpenCV or ONNX Runtime fail to build with it, `cudaPackages_12` may alias `cudaPackages_12_6` instead of `cudaPackages_12_8`.
+- If `cudaPackages_12_9` is the latest release in the 12.x series, but core libraries like OpenCV or ONNX Runtime fail to build with it, `cudaPackages_12` may alias `cudaPackages_12_8` instead of `cudaPackages_12_9`.
 - If `cudaPackages_13_1` is the latest release, but core libraries like PyTorch or Torch Vision fail to build with it, `cudaPackages` may alias `cudaPackages_12` instead of `cudaPackages_13`.
 
 All CUDA package sets include common CUDA packages like `libcublas`, `cudnn`, `tensorrt`, and `nccl`.
@@ -146,7 +146,7 @@ These settings ensure that the CUDA setup hooks function as intended.
 When using `callPackage`, you can choose to pass in a different variant, e.g. when a package requires a specific version of CUDA:
 
 ```nix
-{ mypkg = callPackage { cudaPackages = cudaPackages_12_2; }; }
+{ mypkg = callPackage { cudaPackages = cudaPackages_12_6; }; }
 ```
 
 ::: {.caution}

doc/release-notes/rl-2511.section.md

@@ -69,6 +69,8 @@
 
 - `mongodb-6_0` was removed as it is end of life as of 2025-07-31.
 
+- CUDA versions below 12.6 have been removed, as they are unmaintained upstream and depend on end‐of‐life compilers.
+
 - `vmware-horizon-client` was renamed to `omnissa-horizon-client`, following [VMware's sale of their end-user business to Omnissa](https://www.omnissa.com/insights/introducing-omnissa-the-former-vmware-end-user-computing-business/). The binary has been renamed from `vmware-view` to `horizon-client`.
 
 - `neovimUtils.makeNeovimConfig` now uses `customLuaRC` parameter instead of accepting `luaRcContent`. The old usage is deprecated but still works with a warning.

pkgs/by-name/ca/catboost/package.nix

@@ -15,7 +15,6 @@
   gitUpdater,
   cudaSupport ? config.cudaSupport,
   cudaPackages ? { },
-  llvmPackagesCuda ? llvmPackages,
   pythonSupport ? false,
 }:
 let
@@ -45,10 +44,6 @@ stdenv.mkDerivation (finalAttrs: {
     shopt -s globstar
     for cmakelists in **/CMakeLists.*; do
       sed -i "s/OpenSSL::OpenSSL/OpenSSL::SSL/g" $cmakelists
-      ${lib.optionalString (cudaPackages.cudaOlder "11.8") ''
-        sed -i 's/-gencode=arch=compute_89,code=sm_89//g' $cmakelists
-        sed -i 's/-gencode=arch=compute_90,code=sm_90//g' $cmakelists
-      ''}
     done
   '';
 
@@ -91,7 +86,7 @@ stdenv.mkDerivation (finalAttrs: {
     # catboost requires clang 14+ for build, but does clang 12 for cuda build.
     # after bumping the default version of llvm, check for compatibility with the cuda backend and pin it.
     # see https://catboost.ai/en/docs/installation/build-environment-setup-for-cmake#compilers,-linkers-and-related-tools
-    CUDAHOSTCXX = lib.optionalString cudaSupport "${llvmPackagesCuda.stdenv.cc}/bin/cc";
+    CUDAHOSTCXX = lib.optionalString cudaSupport "${stdenv.cc}/bin/cc";
     NIX_CFLAGS_LINK = lib.optionalString stdenv.hostPlatform.isLinux "-fuse-ld=lld";
     NIX_LDFLAGS = "-lc -lm";
     NIX_CFLAGS_COMPILE = toString (
@@ -139,7 +134,10 @@ stdenv.mkDerivation (finalAttrs: {
       natsukium
     ];
     mainProgram = "catboost";
-    # /nix/store/hzxiynjmmj35fpy3jla7vcqwmzj9i449-Libsystem-1238.60.2/include/sys/_types/_mbstate_t.h:31:9: error: unknown type name '__darwin_mbstate_t'
-    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
+    broken =
+      # See: <https://github.com/catboost/catboost/issues/2755>
+      cudaSupport
+      # /nix/store/hzxiynjmmj35fpy3jla7vcqwmzj9i449-Libsystem-1238.60.2/include/sys/_types/_mbstate_t.h:31:9: error: unknown type name '__darwin_mbstate_t'
+      || (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64);
   };
 })