From ed7edf5c6bd9324a94100dd5e61669b1cd9601d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Thu, 11 Sep 2025 16:47:11 +0000
Subject: [PATCH 01/17] Add non-bundle Torch 2.9 + CUDA 13.0 variant

---
 flake.lock   |  6 ++----
 flake.nix    |  2 +-
 versions.nix | 10 +++++++++-
 3 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/flake.lock b/flake.lock
index 4e8a118a..beff69b1 100644
--- a/flake.lock
+++ b/flake.lock
@@ -82,6 +82,7 @@
       },
       "original": {
         "owner": "huggingface",
+        "ref": "torch-2.9.0",
         "repo": "hf-nix",
         "type": "github"
       }
@@ -107,10 +108,7 @@
         "flake-compat": "flake-compat",
         "flake-utils": "flake-utils",
         "hf-nix": "hf-nix",
-        "nixpkgs": [
-          "hf-nix",
-          "nixpkgs"
-        ]
+        "nixpkgs": ["hf-nix", "nixpkgs"]
       }
     },
     "systems": {
diff --git a/flake.nix b/flake.nix
index 738e7866..f4f5345e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,7 +5,7 @@
     flake-utils.url = "github:numtide/flake-utils";
     nixpkgs.follows = "hf-nix/nixpkgs";
     flake-compat.url = "github:edolstra/flake-compat";
-    hf-nix.url = "github:huggingface/hf-nix";
+    hf-nix.url = "github:huggingface/hf-nix/torch-2.9.0";
   };
 
   outputs =
diff --git a/versions.nix b/versions.nix
index fa5fb5de..e269a7f1 100644
--- a/versions.nix
+++ b/versions.nix
@@ -129,5 +129,13 @@
     systems = [ "x86_64-linux" ];
     bundleBuild = false;
   }
-
+  {
+    torchVersion = "2.9";
+    cudaVersion = "13.0";
+    cxx11Abi = true;
+    systems = [
+      "x86_64-linux"
+      "aarch64-linux"
+    ];
+  }
 ]

From 71189ae0f61ae47119ecebbceab1adb219b1a128 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Fri, 12 Sep 2025 08:54:34 +0000
Subject: [PATCH 02/17] Capability 10.1 is renamed to 11.0 in CUDA 13

---
 build2cmake/src/cuda_supported_archs.json     | 15 ++++++++++++++-
 build2cmake/src/templates/cuda/preamble.cmake |  3 +++
 lib/torch-extension/default.nix               |  5 ++++-
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/build2cmake/src/cuda_supported_archs.json b/build2cmake/src/cuda_supported_archs.json
index 41a56d3f..608d15f8 100644
--- a/build2cmake/src/cuda_supported_archs.json
+++ b/build2cmake/src/cuda_supported_archs.json
@@ -1 +1,14 @@
-["7.0", "7.2", "7.5", "8.0", "8.6", "8.7", "8.9", "9.0", "10.0", "10.1", "12.0"]
+[
+  "7.0",
+  "7.2",
+  "7.5",
+  "8.0",
+  "8.6",
+  "8.7",
+  "8.9",
+  "9.0",
+  "10.0",
+  "10.1",
+  "11.0",
+  "12.0"
+]
diff --git a/build2cmake/src/templates/cuda/preamble.cmake b/build2cmake/src/templates/cuda/preamble.cmake
index 4abea735..acb27b74 100644
--- a/build2cmake/src/templates/cuda/preamble.cmake
+++ b/build2cmake/src/templates/cuda/preamble.cmake
@@ -35,6 +35,9 @@ if (NOT TARGET_DEVICE STREQUAL "cuda" AND
 endif()
 
 if(DEFINED CMAKE_CUDA_COMPILER_VERSION AND
+   CMAKE_CUDA_COMPILER_VERSION VERSION_GREATER_EQUAL 13.0)
+ set(CUDA_DEFAULT_KERNEL_ARCHS "7.0;7.2;7.5;8.0;8.6;8.7;8.9;9.0;10.0;11.0;12.0+PTX")
+elseif(DEFINED CMAKE_CUDA_COMPILER_VERSION AND
    CMAKE_CUDA_COMPILER_VERSION VERSION_GREATER_EQUAL 12.8)
  set(CUDA_DEFAULT_KERNEL_ARCHS "7.0;7.2;7.5;8.0;8.6;8.7;8.9;9.0;10.0;10.1;12.0+PTX")
 else()
diff --git a/lib/torch-extension/default.nix b/lib/torch-extension/default.nix
index 4cc583dc..f21edd21 100644
--- a/lib/torch-extension/default.nix
+++ b/lib/torch-extension/default.nix
@@ -152,8 +152,11 @@ stdenv.mkDerivation (prevAttrs: {
       TORCH_CUDA_ARCH_LIST =
         if cudaPackages.cudaOlder "12.8" then
           "7.0;7.5;8.0;8.6;8.9;9.0"
+        else if cudaPackages.cudaOlder "13.0" then
+          "7.0;7.5;8.0;8.6;8.9;9.0;10.0;10.1;12.0"
         else
-          "7.0;7.5;8.0;8.6;8.9;9.0;10.0;10.1;12.0";
+          # sm_101 has been renamed to sm_110 in CUDA 13.
+          "7.5;8.0;8.6;8.9;9.0;10.0;11.0;12.0";
     }
     // lib.optionalAttrs rocmSupport {
       PYTORCH_ROCM_ARCH = lib.concatStringsSep ";" torch.rocmArchs;

From 827c634bdd91d4956477b778839d6c9d76ab3817 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Fri, 12 Sep 2025 11:27:42 +0000
Subject: [PATCH 03/17] Remove all Torch 2.7 variants

---
 build-variants.json    |  7 ------
 docs/build-variants.md |  7 ------
 versions.nix           | 56 ------------------------------------------
 3 files changed, 70 deletions(-)

diff --git a/build-variants.json b/build-variants.json
index 7f74c1a1..baddd549 100644
--- a/build-variants.json
+++ b/build-variants.json
@@ -1,32 +1,25 @@
 {
   "aarch64-darwin": {
     "metal": [
-      "torch27-metal-aarch64-darwin",
       "torch28-metal-aarch64-darwin"
     ]
   },
   "aarch64-linux": {
     "cuda": [
-      "torch27-cxx11-cu128-aarch64-linux",
       "torch28-cxx11-cu129-aarch64-linux"
     ]
   },
   "x86_64-linux": {
     "cuda": [
-      "torch27-cxx11-cu118-x86_64-linux",
-      "torch27-cxx11-cu126-x86_64-linux",
-      "torch27-cxx11-cu128-x86_64-linux",
       "torch28-cxx11-cu126-x86_64-linux",
       "torch28-cxx11-cu128-x86_64-linux",
       "torch28-cxx11-cu129-x86_64-linux"
     ],
     "rocm": [
-      "torch27-cxx11-rocm63-x86_64-linux",
       "torch28-cxx11-rocm63-x86_64-linux",
       "torch28-cxx11-rocm64-x86_64-linux"
     ],
     "xpu": [
-      "torch27-cxx11-xpu20250-x86_64-linux",
       "torch28-cxx11-xpu20251-x86_64-linux"
     ]
   }
diff --git a/docs/build-variants.md b/docs/build-variants.md
index a9363dfd..e22bcef9 100644
--- a/docs/build-variants.md
+++ b/docs/build-variants.md
@@ -7,32 +7,25 @@ available. This list will be updated as new PyTorch versions are released.
 
 ## Metal aarch64-darwin
 
-- `torch27-metal-aarch64-darwin`
 - `torch28-metal-aarch64-darwin`
 
 ## CUDA aarch64-linux
 
-- `torch27-cxx11-cu128-aarch64-linux`
 - `torch28-cxx11-cu129-aarch64-linux`
 
 ## CUDA x86_64-linux
 
-- `torch27-cxx11-cu118-x86_64-linux`
-- `torch27-cxx11-cu126-x86_64-linux`
-- `torch27-cxx11-cu128-x86_64-linux`
 - `torch28-cxx11-cu126-x86_64-linux`
 - `torch28-cxx11-cu128-x86_64-linux`
 - `torch28-cxx11-cu129-x86_64-linux`
 
 ## ROCm x86_64-linux
 
-- `torch27-cxx11-rocm63-x86_64-linux`
 - `torch28-cxx11-rocm63-x86_64-linux`
 - `torch28-cxx11-rocm64-x86_64-linux`
 
 ## XPU x86_64-linux
 
-- `torch27-cxx11-xpu20250-x86_64-linux`
 - `torch28-cxx11-xpu20251-x86_64-linux`
 
 ## Universal
diff --git a/versions.nix b/versions.nix
index e269a7f1..446c9146 100644
--- a/versions.nix
+++ b/versions.nix
@@ -1,52 +1,4 @@
 [
-  {
-    torchVersion = "2.7";
-    cudaVersion = "11.8";
-    cxx11Abi = true;
-    systems = [ "x86_64-linux" ];
-    bundleBuild = true;
-  }
-  {
-    torchVersion = "2.7";
-    cudaVersion = "12.6";
-    cxx11Abi = true;
-    systems = [
-      "x86_64-linux"
-    ];
-    bundleBuild = true;
-  }
-  {
-    torchVersion = "2.7";
-    cudaVersion = "12.8";
-    cxx11Abi = true;
-    systems = [
-      "x86_64-linux"
-      "aarch64-linux"
-    ];
-    bundleBuild = true;
-  }
-  {
-    torchVersion = "2.7";
-    rocmVersion = "6.3.4";
-    cxx11Abi = true;
-    systems = [ "x86_64-linux" ];
-    bundleBuild = true;
-  }
-  {
-    torchVersion = "2.7";
-    rocmVersion = "6.4.2";
-    cxx11Abi = true;
-    systems = [ "x86_64-linux" ];
-    bundleBuild = false;
-  }
-
-  {
-    torchVersion = "2.7";
-    xpuVersion = "2025.0.2";
-    cxx11Abi = true;
-    systems = [ "x86_64-linux" ];
-    bundleBuild = true;
-  }
   {
     torchVersion = "2.8";
     xpuVersion = "2025.1.3";
@@ -54,14 +6,6 @@
     systems = [ "x86_64-linux" ];
     bundleBuild = true;
   }
-  {
-    torchVersion = "2.7";
-    cxx11Abi = true;
-    metal = true;
-    systems = [ "aarch64-darwin" ];
-    bundleBuild = true;
-  }
-
   {
     torchVersion = "2.8";
     cudaVersion = "12.6";

From 5741c62137af062b3db2ceba7c06ab906cc382ab Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Sun, 14 Sep 2025 10:09:52 +0000
Subject: [PATCH 04/17] Correctly handle versions with a dash (e.g. 2.9.0-rc2)

---
 lib/version-utils.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/version-utils.nix b/lib/version-utils.nix
index c4002c1a..8474ab78 100644
--- a/lib/version-utils.nix
+++ b/lib/version-utils.nix
@@ -1,6 +1,10 @@
 { lib }:
 
+let
+  inherit (lib) versions;
+in
 {
-  flattenVersion = version: lib.replaceStrings [ "." ] [ "" ] (lib.versions.pad 2 version);
+  flattenVersion =
+    version: lib.replaceStrings [ "." ] [ "" ] (versions.majorMinor (versions.pad 2 version));
   abiString = cxx11Abi: if cxx11Abi then "cxx11" else "cxx98";
 }

From f656218b9bff3ad2d0090b5d43d7f122d241066f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Tue, 16 Sep 2025 05:57:38 +0000
Subject: [PATCH 05/17] Add other CUDA variants and ROCm variants

---
 versions.nix | 40 ++++++++++++++++++++++++++++++++++++----
 1 file changed, 36 insertions(+), 4 deletions(-)

diff --git a/versions.nix b/versions.nix
index 446c9146..46d59926 100644
--- a/versions.nix
+++ b/versions.nix
@@ -55,11 +55,18 @@
     systems = [ "aarch64-darwin" ];
     bundleBuild = true;
   }
-
-  # Non-standard versions; not included in bundle builds.
   {
-    torchVersion = "2.8";
-    cudaVersion = "12.4";
+    torchVersion = "2.9";
+    cudaVersion = "12.6";
+    cxx11Abi = true;
+    systems = [
+      "x86_64-linux"
+      "aarch64-linux"
+    ];
+  }
+  {
+    torchVersion = "2.9";
+    cudaVersion = "12.8";
     cxx11Abi = true;
     systems = [
       "x86_64-linux"
@@ -82,4 +89,29 @@
       "aarch64-linux"
     ];
   }
+  {
+    torchVersion = "2.9";
+    rocmVersion = "6.3.4";
+    cxx11Abi = true;
+    systems = [ "x86_64-linux" ];
+    bundleBuild = true;
+  }
+  {
+    torchVersion = "2.9";
+    rocmVersion = "6.4.2";
+    cxx11Abi = true;
+    systems = [ "x86_64-linux" ];
+    bundleBuild = true;
+  }
+
+  # Non-standard versions; not included in bundle builds.
+  {
+    torchVersion = "2.8";
+    cudaVersion = "12.4";
+    cxx11Abi = true;
+    systems = [
+      "x86_64-linux"
+      "aarch64-linux"
+    ];
+  }
 ]

From 227f709a2188416b57f2c3f09b4b38833cedd79e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Tue, 16 Sep 2025 10:21:36 +0200
Subject: [PATCH 06/17] Add Torch 2.9 aarch64-darwin and update variants

---
 build-variants.json    | 7 +++++--
 docs/build-variants.md | 3 +++
 versions.nix           | 7 +++++++
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/build-variants.json b/build-variants.json
index baddd549..22fec673 100644
--- a/build-variants.json
+++ b/build-variants.json
@@ -1,7 +1,8 @@
 {
   "aarch64-darwin": {
     "metal": [
-      "torch28-metal-aarch64-darwin"
+      "torch28-metal-aarch64-darwin",
+      "torch29-metal-aarch64-darwin"
     ]
   },
   "aarch64-linux": {
@@ -17,7 +18,9 @@
     ],
     "rocm": [
       "torch28-cxx11-rocm63-x86_64-linux",
-      "torch28-cxx11-rocm64-x86_64-linux"
+      "torch28-cxx11-rocm64-x86_64-linux",
+      "torch29-cxx11-rocm63-x86_64-linux",
+      "torch29-cxx11-rocm64-x86_64-linux"
     ],
     "xpu": [
       "torch28-cxx11-xpu20251-x86_64-linux"
diff --git a/docs/build-variants.md b/docs/build-variants.md
index e22bcef9..8764994f 100644
--- a/docs/build-variants.md
+++ b/docs/build-variants.md
@@ -8,6 +8,7 @@ available. This list will be updated as new PyTorch versions are released.
 ## Metal aarch64-darwin
 
 - `torch28-metal-aarch64-darwin`
+- `torch29-metal-aarch64-darwin`
 
 ## CUDA aarch64-linux
 
@@ -23,6 +24,8 @@ available. This list will be updated as new PyTorch versions are released.
 
 - `torch28-cxx11-rocm63-x86_64-linux`
 - `torch28-cxx11-rocm64-x86_64-linux`
+- `torch29-cxx11-rocm63-x86_64-linux`
+- `torch29-cxx11-rocm64-x86_64-linux`
 
 ## XPU x86_64-linux
 
diff --git a/versions.nix b/versions.nix
index 46d59926..41502b39 100644
--- a/versions.nix
+++ b/versions.nix
@@ -103,6 +103,13 @@
     systems = [ "x86_64-linux" ];
     bundleBuild = true;
   }
+  {
+    torchVersion = "2.9";
+    cxx11Abi = true;
+    metal = true;
+    systems = [ "aarch64-darwin" ];
+    bundleBuild = true;
+  }
 
   # Non-standard versions; not included in bundle builds.
   {

From adce7e8e5b3b45fbb45b346589a230ff571cba5c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Tue, 16 Sep 2025 09:05:01 +0000
Subject: [PATCH 07/17] CUDA Torch 2.9 are also bundle builds

---
 build-variants.json    | 10 ++++++++--
 docs/build-variants.md |  6 ++++++
 versions.nix           |  3 +++
 3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/build-variants.json b/build-variants.json
index 22fec673..6b365aef 100644
--- a/build-variants.json
+++ b/build-variants.json
@@ -7,14 +7,20 @@
   },
   "aarch64-linux": {
     "cuda": [
-      "torch28-cxx11-cu129-aarch64-linux"
+      "torch28-cxx11-cu129-aarch64-linux",
+      "torch29-cxx11-cu126-aarch64-linux",
+      "torch29-cxx11-cu128-aarch64-linux",
+      "torch29-cxx11-cu130-aarch64-linux"
     ]
   },
   "x86_64-linux": {
     "cuda": [
       "torch28-cxx11-cu126-x86_64-linux",
       "torch28-cxx11-cu128-x86_64-linux",
-      "torch28-cxx11-cu129-x86_64-linux"
+      "torch28-cxx11-cu129-x86_64-linux",
+      "torch29-cxx11-cu126-x86_64-linux",
+      "torch29-cxx11-cu128-x86_64-linux",
+      "torch29-cxx11-cu130-x86_64-linux"
     ],
     "rocm": [
       "torch28-cxx11-rocm63-x86_64-linux",
diff --git a/docs/build-variants.md b/docs/build-variants.md
index 8764994f..0a2248ff 100644
--- a/docs/build-variants.md
+++ b/docs/build-variants.md
@@ -13,12 +13,18 @@ available. This list will be updated as new PyTorch versions are released.
 ## CUDA aarch64-linux
 
 - `torch28-cxx11-cu129-aarch64-linux`
+- `torch29-cxx11-cu126-aarch64-linux`
+- `torch29-cxx11-cu128-aarch64-linux`
+- `torch29-cxx11-cu130-aarch64-linux`
 
 ## CUDA x86_64-linux
 
 - `torch28-cxx11-cu126-x86_64-linux`
 - `torch28-cxx11-cu128-x86_64-linux`
 - `torch28-cxx11-cu129-x86_64-linux`
+- `torch29-cxx11-cu126-x86_64-linux`
+- `torch29-cxx11-cu128-x86_64-linux`
+- `torch29-cxx11-cu130-x86_64-linux`
 
 ## ROCm x86_64-linux
 
diff --git a/versions.nix b/versions.nix
index 41502b39..cce36de5 100644
--- a/versions.nix
+++ b/versions.nix
@@ -63,6 +63,7 @@
       "x86_64-linux"
       "aarch64-linux"
     ];
+    bundleBuild = true;
   }
   {
     torchVersion = "2.9";
@@ -72,6 +73,7 @@
       "x86_64-linux"
       "aarch64-linux"
     ];
+    bundleBuild = true;
   }
   {
     torchVersion = "2.8";
@@ -88,6 +90,7 @@
       "x86_64-linux"
       "aarch64-linux"
     ];
+    bundleBuild = true;
   }
   {
     torchVersion = "2.9";

From 648e43363e6a605ff811128f49c6b1dc5cfa39ce Mon Sep 17 00:00:00 2001
From: "Wang, Yi" <yi.a.wang@intel.com>
Date: Tue, 30 Sep 2025 01:56:29 +0800
Subject: [PATCH 08/17] add xpu torch 2.9 (#232)

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>
---
 build-variants.json    | 3 ++-
 docs/build-variants.md | 1 +
 versions.nix           | 7 +++++++
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/build-variants.json b/build-variants.json
index 6b365aef..86e49cdc 100644
--- a/build-variants.json
+++ b/build-variants.json
@@ -29,7 +29,8 @@
       "torch29-cxx11-rocm64-x86_64-linux"
     ],
     "xpu": [
-      "torch28-cxx11-xpu20251-x86_64-linux"
+      "torch28-cxx11-xpu20251-x86_64-linux",
+      "torch29-cxx11-xpu20252-x86_64-linux"
     ]
   }
 }
diff --git a/docs/build-variants.md b/docs/build-variants.md
index 0a2248ff..39b5c975 100644
--- a/docs/build-variants.md
+++ b/docs/build-variants.md
@@ -36,6 +36,7 @@ available. This list will be updated as new PyTorch versions are released.
 ## XPU x86_64-linux
 
 - `torch28-cxx11-xpu20251-x86_64-linux`
+- `torch29-cxx11-xpu20252-x86_64-linux`
 
 ## Universal
 
diff --git a/versions.nix b/versions.nix
index cce36de5..5568717a 100644
--- a/versions.nix
+++ b/versions.nix
@@ -55,6 +55,13 @@
     systems = [ "aarch64-darwin" ];
     bundleBuild = true;
   }
+  {
+    torchVersion = "2.9";
+    xpuVersion = "2025.2.1";
+    cxx11Abi = true;
+    systems = [ "x86_64-linux" ];
+    bundleBuild = true;
+  }
   {
     torchVersion = "2.9";
     cudaVersion = "12.6";

From bb40a6c06a02300c5b7aaeb3465acd450b459271 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Thu, 2 Oct 2025 13:20:40 +0000
Subject: [PATCH 09/17] Build 2.7, 2.8, and 2.9rc5

---
 build-variants.json    |  7 +++++
 docs/build-variants.md |  7 +++++
 flake.lock             |  8 +++---
 flake.nix              |  2 +-
 versions.nix           | 62 ++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 81 insertions(+), 5 deletions(-)

diff --git a/build-variants.json b/build-variants.json
index 86e49cdc..eb4e85d6 100644
--- a/build-variants.json
+++ b/build-variants.json
@@ -1,12 +1,14 @@
 {
   "aarch64-darwin": {
     "metal": [
+      "torch27-metal-aarch64-darwin",
       "torch28-metal-aarch64-darwin",
       "torch29-metal-aarch64-darwin"
     ]
   },
   "aarch64-linux": {
     "cuda": [
+      "torch27-cxx11-cu128-aarch64-linux",
       "torch28-cxx11-cu129-aarch64-linux",
       "torch29-cxx11-cu126-aarch64-linux",
       "torch29-cxx11-cu128-aarch64-linux",
@@ -15,6 +17,9 @@
   },
   "x86_64-linux": {
     "cuda": [
+      "torch27-cxx11-cu118-x86_64-linux",
+      "torch27-cxx11-cu126-x86_64-linux",
+      "torch27-cxx11-cu128-x86_64-linux",
       "torch28-cxx11-cu126-x86_64-linux",
       "torch28-cxx11-cu128-x86_64-linux",
       "torch28-cxx11-cu129-x86_64-linux",
@@ -23,12 +28,14 @@
       "torch29-cxx11-cu130-x86_64-linux"
     ],
     "rocm": [
+      "torch27-cxx11-rocm63-x86_64-linux",
       "torch28-cxx11-rocm63-x86_64-linux",
       "torch28-cxx11-rocm64-x86_64-linux",
       "torch29-cxx11-rocm63-x86_64-linux",
       "torch29-cxx11-rocm64-x86_64-linux"
     ],
     "xpu": [
+      "torch27-cxx11-xpu20250-x86_64-linux",
       "torch28-cxx11-xpu20251-x86_64-linux",
       "torch29-cxx11-xpu20252-x86_64-linux"
     ]
diff --git a/docs/build-variants.md b/docs/build-variants.md
index 39b5c975..ed7e3f2b 100644
--- a/docs/build-variants.md
+++ b/docs/build-variants.md
@@ -7,11 +7,13 @@ available. This list will be updated as new PyTorch versions are released.
 
 ## Metal aarch64-darwin
 
+- `torch27-metal-aarch64-darwin`
 - `torch28-metal-aarch64-darwin`
 - `torch29-metal-aarch64-darwin`
 
 ## CUDA aarch64-linux
 
+- `torch27-cxx11-cu128-aarch64-linux`
 - `torch28-cxx11-cu129-aarch64-linux`
 - `torch29-cxx11-cu126-aarch64-linux`
 - `torch29-cxx11-cu128-aarch64-linux`
@@ -19,6 +21,9 @@ available. This list will be updated as new PyTorch versions are released.
 
 ## CUDA x86_64-linux
 
+- `torch27-cxx11-cu118-x86_64-linux`
+- `torch27-cxx11-cu126-x86_64-linux`
+- `torch27-cxx11-cu128-x86_64-linux`
 - `torch28-cxx11-cu126-x86_64-linux`
 - `torch28-cxx11-cu128-x86_64-linux`
 - `torch28-cxx11-cu129-x86_64-linux`
@@ -28,6 +33,7 @@ available. This list will be updated as new PyTorch versions are released.
 
 ## ROCm x86_64-linux
 
+- `torch27-cxx11-rocm63-x86_64-linux`
 - `torch28-cxx11-rocm63-x86_64-linux`
 - `torch28-cxx11-rocm64-x86_64-linux`
 - `torch29-cxx11-rocm63-x86_64-linux`
@@ -35,6 +41,7 @@ available. This list will be updated as new PyTorch versions are released.
 
 ## XPU x86_64-linux
 
+- `torch27-cxx11-xpu20250-x86_64-linux`
 - `torch28-cxx11-xpu20251-x86_64-linux`
 - `torch29-cxx11-xpu20252-x86_64-linux`
 
diff --git a/flake.lock b/flake.lock
index beff69b1..8a620b37 100644
--- a/flake.lock
+++ b/flake.lock
@@ -73,16 +73,16 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1759385472,
-        "narHash": "sha256-a1YMZp3Yc1RJfLIObRKBTTbjMKL91IYbzTjG/HNZN+I=",
+        "lastModified": 1759410945,
+        "narHash": "sha256-8fhl0gwMAnOkQbogPIVq+Fha+Yeq52FaRXfwF+F9Q+k=",
         "owner": "huggingface",
         "repo": "hf-nix",
-        "rev": "050dd78a64cb58fb1f9fb29ca498c73107a9a13e",
+        "rev": "dba185e6f0c9abb06055a04644538883417c0f20",
         "type": "github"
       },
       "original": {
         "owner": "huggingface",
-        "ref": "torch-2.9.0",
+        "ref": "torch-2.9.0-rc5",
         "repo": "hf-nix",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index f4f5345e..3c01eb26 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,7 +5,7 @@
     flake-utils.url = "github:numtide/flake-utils";
     nixpkgs.follows = "hf-nix/nixpkgs";
     flake-compat.url = "github:edolstra/flake-compat";
-    hf-nix.url = "github:huggingface/hf-nix/torch-2.9.0";
+    hf-nix.url = "github:huggingface/hf-nix/torch-2.9.0-rc5";
   };
 
   outputs =
diff --git a/versions.nix b/versions.nix
index 5568717a..8b615b2e 100644
--- a/versions.nix
+++ b/versions.nix
@@ -1,4 +1,59 @@
 [
+  {
+    torchVersion = "2.7";
+    cudaVersion = "11.8";
+    cxx11Abi = true;
+    systems = [ "x86_64-linux" ];
+    bundleBuild = true;
+  }
+  {
+    torchVersion = "2.7";
+    cudaVersion = "12.6";
+    cxx11Abi = true;
+    systems = [
+      "x86_64-linux"
+    ];
+    bundleBuild = true;
+  }
+  {
+    torchVersion = "2.7";
+    cudaVersion = "12.8";
+    cxx11Abi = true;
+    systems = [
+      "x86_64-linux"
+      "aarch64-linux"
+    ];
+    bundleBuild = true;
+  }
+  {
+    torchVersion = "2.7";
+    rocmVersion = "6.3.4";
+    cxx11Abi = true;
+    systems = [ "x86_64-linux" ];
+    bundleBuild = true;
+  }
+  {
+    torchVersion = "2.7";
+    rocmVersion = "6.4.2";
+    cxx11Abi = true;
+    systems = [ "x86_64-linux" ];
+    bundleBuild = false;
+  }
+  {
+    torchVersion = "2.7";
+    xpuVersion = "2025.0.2";
+    cxx11Abi = true;
+    systems = [ "x86_64-linux" ];
+    bundleBuild = true;
+  }
+  {
+    torchVersion = "2.7";
+    cxx11Abi = true;
+    metal = true;
+    systems = [ "aarch64-darwin" ];
+    bundleBuild = true;
+  }
+
   {
     torchVersion = "2.8";
     xpuVersion = "2025.1.3";
@@ -131,4 +186,11 @@
       "aarch64-linux"
     ];
   }
+  {
+    torchVersion = "2.8";
+    rocmVersion = "7.0.1";
+    cxx11Abi = true;
+    systems = [ "x86_64-linux" ];
+    bundleBuild = false;
+  }
 ]

From 8b95e4a9455c9d21b601f4232b5b020c0ac58d16 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Fri, 3 Oct 2025 11:12:33 +0200
Subject: [PATCH 10/17] Add a note that Xcode 16.x is required for now

---
 docs/nix.md                     | 1 +
 lib/torch-extension/default.nix | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/docs/nix.md b/docs/nix.md
index e70500a8..2e2bc47b 100644
--- a/docs/nix.md
+++ b/docs/nix.md
@@ -6,6 +6,7 @@ We recommend installing Nix in the following way:
 
 - Linux: use the [official Nix installer](https://nixos.org/download/).
 - macOS: use the [Determinate Nix installer](https://docs.determinate.systems/determinate-nix/).
+  In addition, Xcode 16.x is currently required to build kernels.
 
 ## Getting started
 
diff --git a/lib/torch-extension/default.nix b/lib/torch-extension/default.nix
index f21edd21..cd23ae27 100644
--- a/lib/torch-extension/default.nix
+++ b/lib/torch-extension/default.nix
@@ -55,7 +55,7 @@ let
   onednn-xpu = xpuPackages.onednn-xpu.override { inherit stdenv oneapi-torch-dev; };
 
   # On Darwin, we need the host's xcrun for `xcrun metal` to compile Metal shaders.
-  # t's not supported by the nixpkgs shim.
+  # It's not supported by the nixpkgs shim.
   xcrunHost = writeScriptBin "xcrunHost" ''
     # Use system SDK for Metal files.
     unset DEVELOPER_DIR

From 4eb96b915f2a9e5d7bdb8668f7aeb34f4564d128 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Fri, 3 Oct 2025 09:29:15 +0000
Subject: [PATCH 11/17] Add Torch 2.9 ABI compat warning

---
 README.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/README.md b/README.md
index 1b21b137..d0c1d124 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,13 @@ Python package.
 
 This builder is a core component of the larger kernel build/distribution system.
 
+**Torch 2.9 note:** kernel-builder currently builds Torch 2.9 extensions based on
+the [fifth release candidate](https://dev-discuss.pytorch.org/t/reminder-calls-for-features-upcoming-branch-cut/3225).
+If you upload kernels Torch 2.9 kernels, please validate them against
+the final Torch 2.9.0 release. In the unlikely case of an ABI-breaking
+change, you can rebuild and upload a your kernel once kernel-builder
+is updated for the final release
+
 ## 🚀 Quick Start
 
 We recommend using [Nix](https://nixos.org/download.html) to build kernels. To speed up builds, first enable the Hugging Face binary cache:

From 39367a45996a3ba7601bd7c916a9cd1fe6310e06 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Fri, 3 Oct 2025 11:19:34 +0000
Subject: [PATCH 12/17] Better and better structured `forCache`

---
 flake.nix | 52 ++++++++++++++++++++++++----------------------------
 1 file changed, 24 insertions(+), 28 deletions(-)

diff --git a/flake.nix b/flake.nix
index 3c01eb26..1d58209d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -144,39 +144,35 @@
             }) buildSets
           );
 
-          # Dependencies that should be cached.
+          # Dependencies that should be cached, the structure of the output
+          # path is: <build variant>/<dependency>-<output>
           forCache =
             let
               filterDist = lib.filter (output: output != "dist");
-              # Get all `torch` outputs except for `dist`. Not all outputs
-              # are dependencies of `out`, but we'll need the `cxxdev` and
-              # `dev` outputs for kernel builds.
-              torchOutputs = builtins.listToAttrs (
-                lib.flatten (
-                  # Map over build sets.
-                  map (
-                    buildSet:
-                    # Map over all outputs of `torch` in a buildset.
-                    map (output: {
-                      name = "${buildVersion buildSet}-${output}";
-                      value = buildSet.torch.${output};
-                    }) (filterDist buildSet.torch.outputs)
-                  ) buildSets
-                )
-              );
-              oldLinuxStdenvs = builtins.listToAttrs (
-                map (buildSet: {
-                  name = "stdenv-${buildVersion buildSet}";
-                  value = buildSet.pkgs.stdenvGlibc_2_27;
-                }) buildSets
-              );
+              # Get all outputs except for `dist` (which is the built wheel for Torch).
+              allOutputs =
+                drv:
+                map (output: {
+                  name = "${drv.pname or drv.name}-${output}";
+                  path = drv.${output};
+                }) (filterDist drv.outputs or [ "out" ]);
+              buildSetOutputs =
+                buildSet:
+                with buildSet.pkgs;
+                (
+                  allOutputs buildSet.torch
+                  ++ allOutputs build2cmake
+                  ++ allOutputs kernel-abi-check
+                  ++ allOutputs python3Packages.kernels
+                  ++ allOutputs stdenvGlibc_2_27
+                );
+              buildSetLinkFarm = buildSet: pkgs.linkFarm (buildVersion buildSet) (buildSetOutputs buildSet);
             in
             pkgs.linkFarm "packages-for-cache" (
-              {
-                inherit build2cmake kernel-abi-check;
-              }
-              // torchOutputs
-              // lib.optionalAttrs nixpkgs.legacyPackages.${system}.stdenv.isLinux oldLinuxStdenvs
+              map (buildSet: {
+                name = buildVersion buildSet;
+                path = buildSetLinkFarm buildSet;
+              }) buildSets
             );
         };
       }

From 6e14a4354fc7b87071858a28ff2fc2453ca7638e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Fri, 3 Oct 2025 12:19:18 +0000
Subject: [PATCH 13/17] Back to hf-nix main

---
 flake.lock | 10 ++++++----
 flake.nix  |  2 +-
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/flake.lock b/flake.lock
index 8a620b37..47007e10 100644
--- a/flake.lock
+++ b/flake.lock
@@ -73,16 +73,15 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1759410945,
+        "lastModified": 1759493343,
         "narHash": "sha256-8fhl0gwMAnOkQbogPIVq+Fha+Yeq52FaRXfwF+F9Q+k=",
         "owner": "huggingface",
         "repo": "hf-nix",
-        "rev": "dba185e6f0c9abb06055a04644538883417c0f20",
+        "rev": "b1fc3a18b52447a0f24bc6884418edc5e66082b9",
         "type": "github"
       },
       "original": {
         "owner": "huggingface",
-        "ref": "torch-2.9.0-rc5",
         "repo": "hf-nix",
         "type": "github"
       }
@@ -108,7 +107,10 @@
         "flake-compat": "flake-compat",
         "flake-utils": "flake-utils",
         "hf-nix": "hf-nix",
-        "nixpkgs": ["hf-nix", "nixpkgs"]
+        "nixpkgs": [
+          "hf-nix",
+          "nixpkgs"
+        ]
       }
     },
     "systems": {
diff --git a/flake.nix b/flake.nix
index 1d58209d..7210b321 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,7 +5,7 @@
     flake-utils.url = "github:numtide/flake-utils";
     nixpkgs.follows = "hf-nix/nixpkgs";
     flake-compat.url = "github:edolstra/flake-compat";
-    hf-nix.url = "github:huggingface/hf-nix/torch-2.9.0-rc5";
+    hf-nix.url = "github:huggingface/hf-nix";
   };
 
   outputs =

From b000c74af87cc27eb81444548bc547924f078bd3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Fri, 3 Oct 2025 15:17:10 +0200
Subject: [PATCH 14/17] README fixes

Co-authored-by: Mohamed Mekkouri <93391238+MekkCyber@users.noreply.github.com>
---
 README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index d0c1d124..bf8160a4 100644
--- a/README.md
+++ b/README.md
@@ -17,9 +17,9 @@ This builder is a core component of the larger kernel build/distribution system.
 
 **Torch 2.9 note:** kernel-builder currently builds Torch 2.9 extensions based on
 the [fifth release candidate](https://dev-discuss.pytorch.org/t/reminder-calls-for-features-upcoming-branch-cut/3225).
-If you upload kernels Torch 2.9 kernels, please validate them against
+If you upload Torch 2.9 kernels, please validate them against
 the final Torch 2.9.0 release. In the unlikely case of an ABI-breaking
-change, you can rebuild and upload a your kernel once kernel-builder
+change, you can rebuild and upload your kernel once kernel-builder
 is updated for the final release
 
 ## 🚀 Quick Start

From 5f775f358b552f8e08e791fe333e48f7b19ecfa9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Fri, 3 Oct 2025 13:24:48 +0000
Subject: [PATCH 15/17] Drop capabilities 7.5 and 7.2 for CUDA 13

---
 build2cmake/src/templates/cuda/preamble.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build2cmake/src/templates/cuda/preamble.cmake b/build2cmake/src/templates/cuda/preamble.cmake
index acb27b74..7b6114de 100644
--- a/build2cmake/src/templates/cuda/preamble.cmake
+++ b/build2cmake/src/templates/cuda/preamble.cmake
@@ -36,7 +36,7 @@ endif()
 
 if(DEFINED CMAKE_CUDA_COMPILER_VERSION AND
    CMAKE_CUDA_COMPILER_VERSION VERSION_GREATER_EQUAL 13.0)
- set(CUDA_DEFAULT_KERNEL_ARCHS "7.0;7.2;7.5;8.0;8.6;8.7;8.9;9.0;10.0;11.0;12.0+PTX")
+ set(CUDA_DEFAULT_KERNEL_ARCHS "7.5;8.0;8.6;8.7;8.9;9.0;10.0;11.0;12.0+PTX")
 elseif(DEFINED CMAKE_CUDA_COMPILER_VERSION AND
    CMAKE_CUDA_COMPILER_VERSION VERSION_GREATER_EQUAL 12.8)
  set(CUDA_DEFAULT_KERNEL_ARCHS "7.0;7.2;7.5;8.0;8.6;8.7;8.9;9.0;10.0;10.1;12.0+PTX")

From 74645b26561780142fba12a6bf4faec39ebb4ffb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Fri, 3 Oct 2025 13:27:18 +0000
Subject: [PATCH 16/17] Remove ROCm 7.0 builds that were for testing

---
 versions.nix | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/versions.nix b/versions.nix
index 8b615b2e..5b43fea1 100644
--- a/versions.nix
+++ b/versions.nix
@@ -137,13 +137,6 @@
     ];
     bundleBuild = true;
   }
-  {
-    torchVersion = "2.8";
-    rocmVersion = "7.0.1";
-    cxx11Abi = true;
-    systems = [ "x86_64-linux" ];
-    bundleBuild = false;
-  }
   {
     torchVersion = "2.9";
     cudaVersion = "13.0";
@@ -186,11 +179,4 @@
       "aarch64-linux"
     ];
   }
-  {
-    torchVersion = "2.8";
-    rocmVersion = "7.0.1";
-    cxx11Abi = true;
-    systems = [ "x86_64-linux" ];
-    bundleBuild = false;
-  }
 ]

From 275f12a2960882e8ee23fb4105d7bedf737374c9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Fri, 3 Oct 2025 15:54:03 +0200
Subject: [PATCH 17/17] Fix Darwin caching (stdenvGlibc_2_27 is only for Linux)

---
 flake.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/flake.nix b/flake.nix
index 7210b321..0fa09108 100644
--- a/flake.nix
+++ b/flake.nix
@@ -164,7 +164,7 @@
                   ++ allOutputs build2cmake
                   ++ allOutputs kernel-abi-check
                   ++ allOutputs python3Packages.kernels
-                  ++ allOutputs stdenvGlibc_2_27
+                  ++ lib.optionals stdenv.hostPlatform.isLinux (allOutputs stdenvGlibc_2_27)
                 );
               buildSetLinkFarm = buildSet: pkgs.linkFarm (buildVersion buildSet) (buildSetOutputs buildSet);
             in