From 57144a96bb9b968b6f7c86e27318332554731f81 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Tue, 29 Sep 2026 09:56:44 +0000
Subject: [PATCH 1/5] nix-builder: bring back Torch 2.10-2.12 for XPU

---
 docs/source/builder/build-variants.md         |   3 +
 nix-builder/build-variants.json               |   3 +
 nix-builder/overlay.nix                       |  10 +-
 .../torch/binary/torch-versions-hash.json     |  19 +
 .../torch/binary/torch-versions.json          |  15 +
 .../python-modules/triton-xpu/default.nix     |  12 +
 .../pkgs/xpu-packages/manifests/2025.3.1.json | 817 ++++++++++++++++++
 nix-builder/versions.nix                      |  18 +
 8 files changed, 893 insertions(+), 4 deletions(-)
 create mode 100644 nix-builder/pkgs/xpu-packages/manifests/2025.3.1.json

diff --git a/docs/source/builder/build-variants.md b/docs/source/builder/build-variants.md
index 4866688ad..b38b3810e 100644
--- a/docs/source/builder/build-variants.md
+++ b/docs/source/builder/build-variants.md
@@ -55,6 +55,9 @@ available. This list will be updated as new PyTorch versions are released.
 
 ## XPU x86_64-linux
 
+- `torch210-xpu20253-x86_64-linux`
+- `torch211-xpu20253-x86_64-linux`
+- `torch212-xpu20253-x86_64-linux`
 - `torch213-xpu20260-x86_64-linux`
 - `torch214-xpu20261-x86_64-linux`
 
diff --git a/nix-builder/build-variants.json b/nix-builder/build-variants.json
index 326cc2483..350d30ac0 100644
--- a/nix-builder/build-variants.json
+++ b/nix-builder/build-variants.json
@@ -46,6 +46,9 @@
       "torch214-rocm72-x86_64-linux"
     ],
     "xpu": [
+      "torch210-xpu20253-x86_64-linux",
+      "torch211-xpu20253-x86_64-linux",
+      "torch212-xpu20253-x86_64-linux",
       "torch213-xpu20260-x86_64-linux",
       "torch214-xpu20261-x86_64-linux"
     ]
diff --git a/nix-builder/overlay.nix b/nix-builder/overlay.nix
index cbd8659b4..537afd5a6 100644
--- a/nix-builder/overlay.nix
+++ b/nix-builder/overlay.nix
@@ -103,6 +103,8 @@ final: prev:
           ;
         inherit (triton-rocm) triton-rocm_3_7_0;
         inherit (triton-xpu)
+          triton-xpu_3_6_0
+          triton-xpu_3_7_0
           triton-xpu_3_7_1
           triton-xpu_3_7_2
           triton-xpu_3_8_0
@@ -238,8 +240,8 @@ final: prev:
           version = "2.10";
           triton-cuda = null;
           triton-rocm = null;
-          triton-xpu = null;
-          xpuPackages = null;
+          triton-xpu = triton-xpu_3_6_0;
+          xpuPackages = final.xpuPackages_2025_3_1;
         };
 
         # Maintain a minimal version for TPU support.
@@ -247,8 +249,8 @@ final: prev:
           version = "2.11";
           triton-cuda = null;
           triton-rocm = null;
-          triton-xpu = null;
-          xpuPackages = null;
+          triton-xpu = triton-xpu_3_7_0;
+          xpuPackages = final.xpuPackages_2025_3_2;
         };
 
         torch-bin_2_12 = mkTorch {
diff --git a/nix-builder/pkgs/python-modules/torch/binary/torch-versions-hash.json b/nix-builder/pkgs/python-modules/torch/binary/torch-versions-hash.json
index 2580acf1c..633857134 100644
--- a/nix-builder/pkgs/python-modules/torch/binary/torch-versions-hash.json
+++ b/nix-builder/pkgs/python-modules/torch/binary/torch-versions-hash.json
@@ -6,6 +6,13 @@
         "hash": "sha256-yIsRKf1OFPD4gpY8ZygxXKrjXS9HN00X7e7R7cdpdJc=",
         "version": "2.10.0"
       }
+    },
+    "x86_64-linux": {
+      "xpu": {
+        "url": "https://download.pytorch.org/whl/xpu/torch-2.10.0%2Bxpu-cp314-cp314-linux_x86_64.whl",
+        "hash": "sha256-NJN2IhJKNBK+qpizLyYcHLVnZGEwcv/DQ/TaGzQg7X8=",
+        "version": "2.10.0"
+      }
     }
   },
   "2.11": {
@@ -14,6 +21,11 @@
         "url": "https://download.pytorch.org/whl/cpu/torch-2.11.0%2Bcpu-cp314-cp314-manylinux_2_28_x86_64.whl",
         "hash": "sha256-+EgeqQiOTluBF4p1qr27ZYvehjm8GhX9XY+TCryWZzU=",
         "version": "2.11.0"
+      },
+      "xpu": {
+        "url": "https://download.pytorch.org/whl/xpu/torch-2.11.0%2Bxpu-cp314-cp314-linux_x86_64.whl",
+        "hash": "sha256-9j+b6Gd+E4oquM6pYA4F1Db3AFvgEmr3Clj3s/cYnnM=",
+        "version": "2.11.0"
       }
     },
     "aarch64-darwin": {
@@ -31,6 +43,13 @@
         "hash": "sha256-99+uSlGRl9+gUOmNjjY3ig+1iZYlqHXCtURFAFouQE4=",
         "version": "2.12.0"
       }
+    },
+    "x86_64-linux": {
+      "xpu": {
+        "url": "https://download.pytorch.org/whl/xpu/torch-2.12.0%2Bxpu-cp314-cp314-linux_x86_64.whl",
+        "hash": "sha256-CAXv6u5uWyIA13Bx3WxS1lUg+VsD5H9S9oPmL0jmIuY=",
+        "version": "2.12.0"
+      }
     }
   },
   "2.13": {
diff --git a/nix-builder/pkgs/python-modules/torch/binary/torch-versions.json b/nix-builder/pkgs/python-modules/torch/binary/torch-versions.json
index 8b079e503..9d661bb48 100644
--- a/nix-builder/pkgs/python-modules/torch/binary/torch-versions.json
+++ b/nix-builder/pkgs/python-modules/torch/binary/torch-versions.json
@@ -4,6 +4,11 @@
     "metal": true,
     "systems": ["aarch64-darwin"]
   },
+  {
+    "torchVersion": "2.10.0",
+    "xpuVersion": "2025.3.1",
+    "systems": ["x86_64-linux"]
+  },
 
   {
     "torchVersion": "2.11.0",
@@ -16,12 +21,22 @@
     "metal": true,
     "systems": ["aarch64-darwin"]
   },
+  {
+    "torchVersion": "2.11.0",
+    "xpuVersion": "2025.3.2",
+    "systems": ["x86_64-linux"]
+  },
 
   {
     "torchVersion": "2.12.0",
     "metal": true,
     "systems": ["aarch64-darwin"]
   },
+  {
+    "torchVersion": "2.12.0",
+    "xpuVersion": "2025.3.2",
+    "systems": ["x86_64-linux"]
+  },
 
   {
     "torchVersion": "2.13.0",
diff --git a/nix-builder/pkgs/python-modules/triton-xpu/default.nix b/nix-builder/pkgs/python-modules/triton-xpu/default.nix
index d01993a53..746653771 100644
--- a/nix-builder/pkgs/python-modules/triton-xpu/default.nix
+++ b/nix-builder/pkgs/python-modules/triton-xpu/default.nix
@@ -6,6 +6,18 @@ let
   generic = callPackage ./generic.nix { };
 in
 {
+  triton-xpu_3_6_0 = generic {
+    version = "3.6.0";
+    url = "https://download.pytorch.org/whl/triton_xpu-3.6.0-cp314-cp314-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl";
+    hash = "sha256-WM1zFm+4jIkNP35TyaslJUFhT6ygcJ6Ju15cYeNjwgw=";
+  };
+
+  triton-xpu_3_7_0 = generic {
+    version = "3.7.0";
+    url = "https://download.pytorch.org/whl/triton_xpu-3.7.0-cp314-cp314-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl";
+    hash = "sha256-HiBLsYRJjwIo3eC8dkeIrvSjE15SCejSWQJ1hmbDCqg=";
+  };
+
   triton-xpu_3_7_1 = generic {
     version = "3.7.1";
     url = "https://download-r2.pytorch.org/whl/triton_xpu-3.7.1-cp314-cp314-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl";
diff --git a/nix-builder/pkgs/xpu-packages/manifests/2025.3.1.json b/nix-builder/pkgs/xpu-packages/manifests/2025.3.1.json
new file mode 100644
index 000000000..274d460ef
--- /dev/null
+++ b/nix-builder/pkgs/xpu-packages/manifests/2025.3.1.json
@@ -0,0 +1,817 @@
+{
+  "intel-deep-learning-essentials": {
+    "deps": [
+      "intel-deep-learning-essentials-env",
+      "intel-deep-learning-essentials-getting-started",
+      "intel-oneapi-ccl",
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars",
+      "intel-oneapi-compiler-dpcpp-cpp",
+      "intel-oneapi-dev-utilities",
+      "intel-oneapi-dnnl",
+      "intel-oneapi-libdpstd-devel",
+      "intel-oneapi-mkl-devel",
+      "intel-oneapi-tlt",
+      "intel-pti-dev"
+    ],
+    "components": [
+      {
+        "name": "intel-deep-learning-essentials-2025.3",
+        "sha256": "eefe2f5216606e4eadf8865834e5a59eec613a0590d6194cda93d2f9e3cb10ee",
+        "url": "https://yum.repos.intel.com/oneapi/intel-deep-learning-essentials-2025.3-2025.3.1-9.x86_64.rpm",
+        "version": "2025.3.1"
+      }
+    ],
+    "version": "2025.3.1"
+  },
+  "intel-deep-learning-essentials-env": {
+    "deps": [
+      "intel-oneapi-tlt"
+    ],
+    "components": [
+      {
+        "name": "intel-deep-learning-essentials-env-2025.3",
+        "sha256": "1e3bf9509c2739fc970d6c7b558569eb3d14fb8f682c1e49f3a27126e7b61b00",
+        "url": "https://yum.repos.intel.com/oneapi/intel-deep-learning-essentials-env-2025.3-2025.3.1-9.noarch.rpm",
+        "version": "2025.3.1"
+      }
+    ],
+    "version": "2025.3.1"
+  },
+  "intel-deep-learning-essentials-getting-started": {
+    "deps": [],
+    "components": [
+      {
+        "name": "intel-deep-learning-essentials-getting-started-2025.3",
+        "sha256": "9e8af54789d9740c8021e13ef6ce210908b65e313719ee2e5902c474bb61a906",
+        "url": "https://yum.repos.intel.com/oneapi/intel-deep-learning-essentials-getting-started-2025.3-2025.3.1-9.noarch.rpm",
+        "version": "2025.3.1"
+      }
+    ],
+    "version": "2025.3.1"
+  },
+  "intel-oneapi-ccl": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars",
+      "intel-oneapi-mpi"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-ccl-2021.17",
+        "sha256": "1f737cd4a12c6684aac99065449d12b7ed020b99335c576fe14dfdaefc92ca87",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-ccl-2021.17-2021.17.1-7.x86_64.rpm",
+        "version": "2021.17.1"
+      },
+      {
+        "name": "intel-oneapi-ccl-devel-2021.17",
+        "sha256": "e11cf6ec83c458b1b833b7f66cee508af4f16e43065bf08ef49eab508fdaf1fc",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-ccl-devel-2021.17-2021.17.1-7.x86_64.rpm",
+        "version": "2021.17.1"
+      }
+    ],
+    "version": "2021.17.1"
+  },
+  "intel-oneapi-common-licensing": {
+    "deps": [],
+    "components": [
+      {
+        "name": "intel-oneapi-common-licensing-2025.3",
+        "sha256": "7fe5399de1358bb8386694859fc95f528431418064c20879bae61ce7d23a4896",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-common-licensing-2025.3-2025.3.0-199.noarch.rpm",
+        "version": "2025.3.0"
+      }
+    ],
+    "version": "2025.3.0"
+  },
+  "intel-oneapi-common-oneapi-vars": {
+    "deps": [],
+    "components": [
+      {
+        "name": "intel-oneapi-common-oneapi-vars-2025.3",
+        "sha256": "e5e514a2b94f27c0dee496408c4aa34efc9cfcaee2da818a425c3d059a2b5614",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-common-oneapi-vars-2025.3-2025.3.0-199.noarch.rpm",
+        "version": "2025.3.0"
+      }
+    ],
+    "version": "2025.3.0"
+  },
+  "intel-oneapi-common-vars": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-common-vars",
+        "sha256": "b63893047035486d86afdb8994fc6e27aa694197bacb4479eb852cc7478d6f59",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-common-vars-2025.3.0-199.noarch.rpm",
+        "version": "2025.3.0"
+      }
+    ],
+    "version": "2025.3.0"
+  },
+  "intel-oneapi-compiler-cpp-eclipse-cfg": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-compiler-cpp-eclipse-cfg-2025.3",
+        "sha256": "498e036b6583ccc6b27ee56fead7438684222833473f01d6b53f60b4fd398e00",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-compiler-cpp-eclipse-cfg-2025.3-2025.3.1-760.noarch.rpm",
+        "version": "2025.3.1"
+      }
+    ],
+    "version": "2025.3.1"
+  },
+  "intel-oneapi-compiler-dpcpp-cpp": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars",
+      "intel-oneapi-dpcpp-cpp",
+      "intel-oneapi-libdpstd-devel"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-compiler-dpcpp-cpp-2025.3",
+        "sha256": "b7cee64d68ef8b347265fb85dcb24bd8936065ed160cfd77dd6570f4e777f1ee",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-compiler-dpcpp-cpp-2025.3-2025.3.1-760.x86_64.rpm",
+        "version": "2025.3.1"
+      }
+    ],
+    "version": "2025.3.1"
+  },
+  "intel-oneapi-compiler-dpcpp-cpp-common": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars",
+      "intel-oneapi-compiler-cpp-eclipse-cfg",
+      "intel-oneapi-compiler-dpcpp-eclipse-cfg",
+      "intel-oneapi-compiler-shared-common",
+      "intel-oneapi-icc-eclipse-plugin-cpp"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-compiler-dpcpp-cpp-common-2025.3",
+        "sha256": "b0f040cb1b2aa9f366e42b9473bd8456b87bec224b4fca53c3e1d788ebdedddd",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-compiler-dpcpp-cpp-common-2025.3-2025.3.1-760.noarch.rpm",
+        "version": "2025.3.1"
+      }
+    ],
+    "version": "2025.3.1"
+  },
+  "intel-oneapi-compiler-dpcpp-cpp-runtime": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars",
+      "intel-oneapi-compiler-shared-runtime",
+      "intel-oneapi-tbb",
+      "intel-oneapi-umf"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-compiler-dpcpp-cpp-runtime-2025.3",
+        "sha256": "b10742951317fc292de902e17e815904d359a6dec48d5df40b11abcd537eb314",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-compiler-dpcpp-cpp-runtime-2025.3-2025.3.1-760.x86_64.rpm",
+        "version": "2025.3.1"
+      }
+    ],
+    "version": "2025.3.1"
+  },
+  "intel-oneapi-compiler-dpcpp-eclipse-cfg": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-compiler-dpcpp-eclipse-cfg-2025.3",
+        "sha256": "a32d745f520e171bb0bce45e327bba22171989f6fb100b5dda63ecc24ad5a91d",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-compiler-dpcpp-eclipse-cfg-2025.3-2025.3.1-760.noarch.rpm",
+        "version": "2025.3.1"
+      }
+    ],
+    "version": "2025.3.1"
+  },
+  "intel-oneapi-compiler-shared": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars",
+      "intel-oneapi-compiler-shared-common",
+      "intel-oneapi-compiler-shared-runtime",
+      "intel-oneapi-dpcpp-debugger"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-compiler-shared-2025.3",
+        "sha256": "f00e455a96e5be206388c8eb10c34bfbdc89ca2b281dcb4a366f49fc3e2c269b",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-compiler-shared-2025.3-2025.3.1-760.x86_64.rpm",
+        "version": "2025.3.1"
+      }
+    ],
+    "version": "2025.3.1"
+  },
+  "intel-oneapi-compiler-shared-common": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-compiler-shared-common-2025.3",
+        "sha256": "64a502090b1dcdf2c96974f2c7e8d981e70753fe92dae34d22ebc0152d777c11",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-compiler-shared-common-2025.3-2025.3.1-760.noarch.rpm",
+        "version": "2025.3.1"
+      }
+    ],
+    "version": "2025.3.1"
+  },
+  "intel-oneapi-compiler-shared-runtime": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars",
+      "intel-oneapi-openmp"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-compiler-shared-runtime-2025.3",
+        "sha256": "97dafadc2986d234d0e96cf43d6230df4f5479d0afff603ee1b56387b9dffe90",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-compiler-shared-runtime-2025.3-2025.3.1-760.x86_64.rpm",
+        "version": "2025.3.1"
+      }
+    ],
+    "version": "2025.3.1"
+  },
+  "intel-oneapi-dev-utilities": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars",
+      "intel-oneapi-dev-utilities-eclipse-cfg"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-dev-utilities-2025.3",
+        "sha256": "722dc0d1818bb5c75ff666ac297a3fff10c717fb696c62a6a7741bd841908d91",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-dev-utilities-2025.3-2025.3.0-213.x86_64.rpm",
+        "version": "2025.3.0"
+      }
+    ],
+    "version": "2025.3.0"
+  },
+  "intel-oneapi-dev-utilities-eclipse-cfg": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-dev-utilities-eclipse-cfg-2025.3",
+        "sha256": "6f0505d5004c446047dd9ad9ad8ddecda968977c095cc5b2eac66e7a10a4f4f7",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-dev-utilities-eclipse-cfg-2025.3-2025.3.0-213.noarch.rpm",
+        "version": "2025.3.0"
+      }
+    ],
+    "version": "2025.3.0"
+  },
+  "intel-oneapi-dnnl": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars",
+      "intel-oneapi-compiler-dpcpp-cpp-runtime",
+      "intel-oneapi-tbb"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-dnnl-2025.3",
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+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars",
+      "intel-oneapi-tcm"
+    ],
+    "components": [
+      {
+        "name": "intel-oneapi-umf-1.0",
+        "sha256": "08755ca90c4393a7756319d8806d57f3f6a406dc8a2c8b67a717bc0da5cad9ef",
+        "url": "https://yum.repos.intel.com/oneapi/intel-oneapi-umf-1.0-1.0.2-81.x86_64.rpm",
+        "version": "1.0.2"
+      }
+    ],
+    "version": "1.0.2"
+  },
+  "intel-pti": {
+    "deps": [
+      "intel-oneapi-common-licensing",
+      "intel-oneapi-common-oneapi-vars",
+      "intel-oneapi-common-vars"
+    ],
+    "components": [
+      {
+        "name": "intel-pti-0.15",
+        "sha256": "e1ab8ff6d54a79e166e95000edd99a9d6c8074cbc87576dba896dd967af3c617",
+        "url": "https://yum.repos.intel.com/oneapi/intel-pti-0.15-0.15.0-13.x86_64.rpm",
+        "version": "0.15.0"
+      }
+    ],
+    "version": "0.15.0"
+  },
+  "intel-pti-dev": {
+    "deps": [
+      "intel-pti"
+    ],
+    "components": [
+      {
+        "name": "intel-pti-dev-0.15",
+        "sha256": "7415baaebb4f56e0e79a7e1df03e0e037049a7f6450e55c3782b4314e5bde504",
+        "url": "https://yum.repos.intel.com/oneapi/intel-pti-dev-0.15-0.15.0-13.x86_64.rpm",
+        "version": "0.15.0"
+      }
+    ],
+    "version": "0.15.0"
+  }
+}
diff --git a/nix-builder/versions.nix b/nix-builder/versions.nix
index ae9a2935a..f72665ede 100644
--- a/nix-builder/versions.nix
+++ b/nix-builder/versions.nix
@@ -5,6 +5,12 @@
     systems = [ "aarch64-darwin" ];
     bundleBuild = true;
   }
+  {
+    torchVersion = "2.10";
+    xpuVersion = "2025.3.1";
+    systems = [ "x86_64-linux" ];
+    bundleBuild = true;
+  }
   {
     torchVersion = "2.11";
     cpu = true;
@@ -19,6 +25,12 @@
     systems = [ "aarch64-darwin" ];
     bundleBuild = true;
   }
+  {
+    torchVersion = "2.11";
+    xpuVersion = "2025.3.2";
+    systems = [ "x86_64-linux" ];
+    bundleBuild = true;
+  }
   {
     torchVersion = "2.11";
     tpu = true;
@@ -35,6 +47,12 @@
     systems = [ "aarch64-darwin" ];
     bundleBuild = true;
   }
+  {
+    torchVersion = "2.12";
+    xpuVersion = "2025.3.2";
+    systems = [ "x86_64-linux" ];
+    bundleBuild = true;
+  }
 
   {
     torchVersion = "2.13";

From 34a70530634d95b5f10b3df46132cbaf5a5189fa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Tue, 29 Sep 2026 17:40:56 +0000
Subject: [PATCH 2/5] nix-builder: support building versions that are
 pre-stable ABI

---
 examples/kernels/flake.nix                    | 11 ++++++++++
 .../pyproject/templates/torch/preamble.cmake  | 12 +++++------
 nix-builder/lib/build.nix                     | 20 +++++++++++++++++--
 nix-builder/lib/kernel-config.nix             |  8 ++++++++
 nix-builder/lib/variants/torch.nix            |  6 +++++-
 5 files changed, 47 insertions(+), 10 deletions(-)

diff --git a/examples/kernels/flake.nix b/examples/kernels/flake.nix
index 7acc3fffd..4d48608e6 100644
--- a/examples/kernels/flake.nix
+++ b/examples/kernels/flake.nix
@@ -326,6 +326,17 @@
           path = ./cutlass-gemm;
           drv = sys: out: out.packages.${sys}.redistributable.${"torch${torchVersion}-${xpuVersion}-${sys}"};
         }
+        {
+          name = "relu-torch-stable-abi-kernel";
+          path = ./relu-torch-stable-abi;
+          drv = sys: out: out.packages.${sys}.redistributable.${"torch-stable-abi211-${xpuVersion}-${sys}"};
+        }
+        # Check that we can also build the non-stable ABI version preceding the stable ABI version.
+        {
+          name = "relu-torch-stable-abi-kernel";
+          path = ./relu-torch-stable-abi;
+          drv = sys: out: out.packages.${sys}.redistributable.${"torch210-xpu20253-${sys}"};
+        }
       ];
 
       # Metal kernels to build in CI.
diff --git a/kernel-builder/src/pyproject/templates/torch/preamble.cmake b/kernel-builder/src/pyproject/templates/torch/preamble.cmake
index a3ce7cfb0..34f29891f 100644
--- a/kernel-builder/src/pyproject/templates/torch/preamble.cmake
+++ b/kernel-builder/src/pyproject/templates/torch/preamble.cmake
@@ -78,19 +78,17 @@ set(_STABLE_ABI_VERSION_{{ entry.backend }} "{{ entry.version }}")
 {% endfor %}
 set(_STABLE_ABI_VERSION "${_STABLE_ABI_VERSION_${BACKEND}}")
 
-if(_STABLE_ABI_VERSION)
-  if (TORCH_VERSION VERSION_LESS ${_STABLE_ABI_VERSION})
-    message(FATAL_ERROR "Torch version ${TORCH_VERSION} is less than the stable ABI "
-      "version ${_STABLE_ABI_VERSION}. Cannot build with stable ABI targeting a newer version of Torch.")
-  endif()
-
+if(_STABLE_ABI_VERSION AND TORCH_VERSION VERSION_GREATER_EQUAL ${_STABLE_ABI_VERSION})
+  message("Building for the Torch stable ABI. ABI version: ${_STABLE_ABI_VERSION}, Torch version: ${TORCH_VERSION}")
   # From the Torch docs: TORCH_TARGET_VERSION (((0ULL + major) << 56) | ((0ULL + minor) << 48))
   string(REPLACE "." ";" _STABLE_ABI_VERSION_LIST "${_STABLE_ABI_VERSION}")
   list(GET _STABLE_ABI_VERSION_LIST 0 _STABLE_ABI_MAJOR)
   list(GET _STABLE_ABI_VERSION_LIST 1 _STABLE_ABI_MINOR)
   math(EXPR _STABLE_ABI_HEX "(${_STABLE_ABI_MAJOR} << 56) | (${_STABLE_ABI_MINOR} << 48)" OUTPUT_FORMAT HEXADECIMAL)
-
   add_compile_definitions(-DTORCH_TARGET_VERSION=${_STABLE_ABI_HEX})
+else()
+  message("Not building for the Torch stable ABI. ABI version: ${_STABLE_ABI_VERSION}, Torch version: ${TORCH_VERSION}")
+  unset(_STABLE_ABI_VERSION)
 endif()
 {% endif %}
 
diff --git a/nix-builder/lib/build.nix b/nix-builder/lib/build.nix
index 757a81e2e..5730a466c 100644
--- a/nix-builder/lib/build.nix
+++ b/nix-builder/lib/build.nix
@@ -88,8 +88,14 @@ rec {
         in
         builtins.attrValues newestPerGroup;
 
+      # Split up build sets into two:
+      #
+      # - Right: build sets with Torch versions that can build for the
+      #          kernels requested stable ABI version.
+      # - Wrong: all other build sets.
       byStableAbi = lib.partition (
-        buildSet: kernelConfig.isTorchStableAbiForBackend buildSet.buildConfig.backend
+        buildSet:
+        kernelConfig.torchCoversStableAbi buildSet.buildConfig.backend buildSet.buildConfig.torchVersion
       ) (buildSetsWithinBounds buildSets);
     in
     deduplicateForStableAbi byStableAbi.right ++ byStableAbi.wrong;
@@ -180,6 +186,16 @@ rec {
         variant = variants.kernelVariant kernelConfig;
       }
     else
+      let
+        torchStableAbiVersion' = kernelConfig.torchStableAbiVersionForBackend buildConfig.backend;
+        torchStableAbiVersion =
+          if
+            torchStableAbiVersion' != null && lib.versionAtLeast buildConfig.torchVersion torchStableAbiVersion'
+          then
+            torchStableAbiVersion'
+          else
+            null;
+      in
       extension.mkTorchExtension {
         inherit
           buildConfig
@@ -195,7 +211,7 @@ rec {
           kernelProvenance
           ;
 
-        torchStableAbiVersion = kernelConfig.torchStableAbiVersionForBackend buildConfig.backend;
+        inherit torchStableAbiVersion;
 
         kernelName = kernelConfig.name;
         doAbiCheck = true;
diff --git a/nix-builder/lib/kernel-config.nix b/nix-builder/lib/kernel-config.nix
index 4770404a6..385609d37 100644
--- a/nix-builder/lib/kernel-config.nix
+++ b/nix-builder/lib/kernel-config.nix
@@ -40,6 +40,14 @@ in
   # Does the given backend use the torch stable ABI.
   isTorchStableAbiForBackend = backend: torchStableAbiVersionForBackend backend != null;
 
+  # The given Torch version can build for this kernel's ABI version.
+  torchCoversStableAbi =
+    backend: torchVersion:
+    let
+      stableAbiVersion = torchStableAbiVersionForBackend backend;
+    in
+    stableAbiVersion != null && lib.versionAtLeast torchVersion stableAbiVersion;
+
   # Kernel backends.
   backends =
     let
diff --git a/nix-builder/lib/variants/torch.nix b/nix-builder/lib/variants/torch.nix
index 6ef189d10..27f741ec2 100644
--- a/nix-builder/lib/variants/torch.nix
+++ b/nix-builder/lib/variants/torch.nix
@@ -36,7 +36,11 @@ in
       archVariant = kernelConfig.kernelBackends.${buildConfig.backend};
       stableAbiVersion = kernelConfig.torchStableAbiVersionForBackend buildConfig.backend;
     in
-    if archVariant && stableAbiVersion != null then
+    if
+      archVariant
+      && stableAbiVersion != null
+      && lib.versionAtLeast buildConfig.torchVersion stableAbiVersion
+    then
       "torch-stable-abi${flattenVersion (lib.versions.majorMinor stableAbiVersion)}-${computeString}-${buildConfig.system}"
     else if archVariant then
       archString

From bc17ce8f7935823d0f0f0e7b137745bc8ab70b0c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Wed, 30 Sep 2026 06:30:01 +0000
Subject: [PATCH 3/5] nix-builder: small cleanup by using
 `torchCoversStableAbi`

---
 nix-builder/lib/variants/torch.nix | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/nix-builder/lib/variants/torch.nix b/nix-builder/lib/variants/torch.nix
index 27f741ec2..e17847e50 100644
--- a/nix-builder/lib/variants/torch.nix
+++ b/nix-builder/lib/variants/torch.nix
@@ -37,9 +37,7 @@ in
       stableAbiVersion = kernelConfig.torchStableAbiVersionForBackend buildConfig.backend;
     in
     if
-      archVariant
-      && stableAbiVersion != null
-      && lib.versionAtLeast buildConfig.torchVersion stableAbiVersion
+      archVariant && kernelConfig.torchCoversStableAbi buildConfig.backend buildConfig.torchVersion
     then
       "torch-stable-abi${flattenVersion (lib.versions.majorMinor stableAbiVersion)}-${computeString}-${buildConfig.system}"
     else if archVariant then

From bae9a717ec84d1af3c5056fc64fe313d00cf05ed Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Wed, 30 Sep 2026 07:06:46 +0000
Subject: [PATCH 4/5] nix-builder: another cleanup using `torchCoversStableAbi`

---
 nix-builder/lib/build.nix | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/nix-builder/lib/build.nix b/nix-builder/lib/build.nix
index 5730a466c..2330218b8 100644
--- a/nix-builder/lib/build.nix
+++ b/nix-builder/lib/build.nix
@@ -187,12 +187,9 @@ rec {
       }
     else
       let
-        torchStableAbiVersion' = kernelConfig.torchStableAbiVersionForBackend buildConfig.backend;
         torchStableAbiVersion =
-          if
-            torchStableAbiVersion' != null && lib.versionAtLeast buildConfig.torchVersion torchStableAbiVersion'
-          then
-            torchStableAbiVersion'
+          if kernelConfig.torchCoversStableAbi buildConfig.backend buildConfig.torchVersion then
+            kernelConfig.torchStableAbiVersionForBackend buildConfig.backend
           else
             null;
       in

From 6b9ecb1985f8daffb23a8044cc0d383c5bc7a7dd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Wed, 30 Sep 2026 09:21:25 +0000
Subject: [PATCH 5/5] nix-builder: extend comment on partitioning build sets

---
 nix-builder/lib/build.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/nix-builder/lib/build.nix b/nix-builder/lib/build.nix
index 2330218b8..c382795ef 100644
--- a/nix-builder/lib/build.nix
+++ b/nix-builder/lib/build.nix
@@ -93,6 +93,10 @@ rec {
       # - Right: build sets with Torch versions that can build for the
       #          kernels requested stable ABI version.
       # - Wrong: all other build sets.
+      #
+      # For instance, if stable-abi = 2.13 for XPU, then all Torch >= 2.13
+      # build sets will be in `right` and all Torch < 2.13 build sets will
+      # be in `wrong`.
       byStableAbi = lib.partition (
         buildSet:
         kernelConfig.torchCoversStableAbi buildSet.buildConfig.backend buildSet.buildConfig.torchVersion