From 0f23497ea96fd259c619e7ed662b7ba3a50893d3 Mon Sep 17 00:00:00 2001
From: Bradley Dice <bdice@bradleydice.com>
Date: Thu, 9 Apr 2026 21:18:02 -0500
Subject: [PATCH] Update to clang 20.1.8.

---
 .pre-commit-config.yaml                                 | 4 ++--
 conda/environments/all_cuda-129_arch-aarch64.yaml       | 6 +++---
 conda/environments/all_cuda-129_arch-x86_64.yaml        | 6 +++---
 conda/environments/all_cuda-131_arch-aarch64.yaml       | 6 +++---
 conda/environments/all_cuda-131_arch-x86_64.yaml        | 6 +++---
 conda/environments/bench_ann_cuda-129_arch-aarch64.yaml | 6 +++---
 conda/environments/bench_ann_cuda-129_arch-x86_64.yaml  | 6 +++---
 conda/environments/bench_ann_cuda-131_arch-aarch64.yaml | 6 +++---
 conda/environments/bench_ann_cuda-131_arch-x86_64.yaml  | 6 +++---
 conda/environments/go_cuda-129_arch-aarch64.yaml        | 6 +++---
 conda/environments/go_cuda-129_arch-x86_64.yaml         | 6 +++---
 conda/environments/go_cuda-131_arch-aarch64.yaml        | 6 +++---
 conda/environments/go_cuda-131_arch-x86_64.yaml         | 6 +++---
 conda/environments/rust_cuda-129_arch-aarch64.yaml      | 6 +++---
 conda/environments/rust_cuda-129_arch-x86_64.yaml       | 6 +++---
 conda/environments/rust_cuda-131_arch-aarch64.yaml      | 6 +++---
 conda/environments/rust_cuda-131_arch-x86_64.yaml       | 6 +++---
 cpp/scripts/run-clang-tidy.py                           | 4 ++--
 dependencies.yaml                                       | 6 +++---
 19 files changed, 55 insertions(+), 55 deletions(-)

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 183c750643..eeec2254ae 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -43,7 +43,7 @@ repos:
                 additional_dependencies: [toml]
                 args: ["--config=pyproject.toml"]
       - repo: https://github.com/pre-commit/mirrors-clang-format
-        rev: v20.1.4
+        rev: v20.1.8
         hooks:
               - id: clang-format
                 types_or: [c, c++, cuda]
@@ -96,7 +96,7 @@ repos:
                 name: clang-format-with-cmake-placeholders
                 entry: python3 ci/checks/clang_format_with_cmake_placeholders.py
                 language: python
-                additional_dependencies: [clang_format==20.1.4]
+                additional_dependencies: [clang_format==20.1.8]
                 files: |
                   (?x)
                     [.](cpp|cu|hpp|cuh)[.]in$
diff --git a/conda/environments/all_cuda-129_arch-aarch64.yaml b/conda/environments/all_cuda-129_arch-aarch64.yaml
index d478219ef7..d4dd419ae4 100644
--- a/conda/environments/all_cuda-129_arch-aarch64.yaml
+++ b/conda/environments/all_cuda-129_arch-aarch64.yaml
@@ -8,8 +8,8 @@ dependencies:
 - _go_select *=cgo
 - breathe>=4.35.0
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - cmake>=3.30.4
 - cuda-nvcc
 - cuda-nvtx-dev
@@ -25,7 +25,7 @@ dependencies:
 - go
 - graphviz
 - ipython
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/all_cuda-129_arch-x86_64.yaml b/conda/environments/all_cuda-129_arch-x86_64.yaml
index 8ee005ce49..aa45dfa5db 100644
--- a/conda/environments/all_cuda-129_arch-x86_64.yaml
+++ b/conda/environments/all_cuda-129_arch-x86_64.yaml
@@ -8,8 +8,8 @@ dependencies:
 - _go_select *=cgo
 - breathe>=4.35.0
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - cmake>=3.30.4
 - cuda-nvcc
 - cuda-nvtx-dev
@@ -25,7 +25,7 @@ dependencies:
 - go
 - graphviz
 - ipython
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/all_cuda-131_arch-aarch64.yaml b/conda/environments/all_cuda-131_arch-aarch64.yaml
index a90088dc03..6278ac1dc6 100644
--- a/conda/environments/all_cuda-131_arch-aarch64.yaml
+++ b/conda/environments/all_cuda-131_arch-aarch64.yaml
@@ -8,8 +8,8 @@ dependencies:
 - _go_select *=cgo
 - breathe>=4.35.0
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - cmake>=3.30.4
 - cuda-nvcc
 - cuda-nvtx-dev
@@ -25,7 +25,7 @@ dependencies:
 - go
 - graphviz
 - ipython
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/all_cuda-131_arch-x86_64.yaml b/conda/environments/all_cuda-131_arch-x86_64.yaml
index 23150f3ba4..911ec7f13e 100644
--- a/conda/environments/all_cuda-131_arch-x86_64.yaml
+++ b/conda/environments/all_cuda-131_arch-x86_64.yaml
@@ -8,8 +8,8 @@ dependencies:
 - _go_select *=cgo
 - breathe>=4.35.0
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - cmake>=3.30.4
 - cuda-nvcc
 - cuda-nvtx-dev
@@ -25,7 +25,7 @@ dependencies:
 - go
 - graphviz
 - ipython
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/bench_ann_cuda-129_arch-aarch64.yaml b/conda/environments/bench_ann_cuda-129_arch-aarch64.yaml
index f09884d28c..e0e45c7564 100644
--- a/conda/environments/bench_ann_cuda-129_arch-aarch64.yaml
+++ b/conda/environments/bench_ann_cuda-129_arch-aarch64.yaml
@@ -6,8 +6,8 @@ channels:
 - conda-forge
 dependencies:
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - click
 - cmake>=3.30.4
 - cuda-nvcc
@@ -23,7 +23,7 @@ dependencies:
 - gcc_linux-aarch64=14.*
 - glog>=0.6.0
 - h5py>=3.8.0
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/bench_ann_cuda-129_arch-x86_64.yaml b/conda/environments/bench_ann_cuda-129_arch-x86_64.yaml
index b64caf30b3..98b327a360 100644
--- a/conda/environments/bench_ann_cuda-129_arch-x86_64.yaml
+++ b/conda/environments/bench_ann_cuda-129_arch-x86_64.yaml
@@ -6,8 +6,8 @@ channels:
 - conda-forge
 dependencies:
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - click
 - cmake>=3.30.4
 - cuda-nvcc
@@ -25,7 +25,7 @@ dependencies:
 - h5py>=3.8.0
 - libaio
 - libboost-devel=1.87
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/bench_ann_cuda-131_arch-aarch64.yaml b/conda/environments/bench_ann_cuda-131_arch-aarch64.yaml
index 3758fab63b..dae87a497a 100644
--- a/conda/environments/bench_ann_cuda-131_arch-aarch64.yaml
+++ b/conda/environments/bench_ann_cuda-131_arch-aarch64.yaml
@@ -6,8 +6,8 @@ channels:
 - conda-forge
 dependencies:
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - click
 - cmake>=3.30.4
 - cuda-nvcc
@@ -23,7 +23,7 @@ dependencies:
 - gcc_linux-aarch64=14.*
 - glog>=0.6.0
 - h5py>=3.8.0
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/bench_ann_cuda-131_arch-x86_64.yaml b/conda/environments/bench_ann_cuda-131_arch-x86_64.yaml
index 5f93dbb946..6f121fe22f 100644
--- a/conda/environments/bench_ann_cuda-131_arch-x86_64.yaml
+++ b/conda/environments/bench_ann_cuda-131_arch-x86_64.yaml
@@ -6,8 +6,8 @@ channels:
 - conda-forge
 dependencies:
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - click
 - cmake>=3.30.4
 - cuda-nvcc
@@ -25,7 +25,7 @@ dependencies:
 - h5py>=3.8.0
 - libaio
 - libboost-devel=1.87
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/go_cuda-129_arch-aarch64.yaml b/conda/environments/go_cuda-129_arch-aarch64.yaml
index 7eee810027..2205a591b8 100644
--- a/conda/environments/go_cuda-129_arch-aarch64.yaml
+++ b/conda/environments/go_cuda-129_arch-aarch64.yaml
@@ -7,8 +7,8 @@ channels:
 dependencies:
 - _go_select *=cgo
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - cmake>=3.30.4
 - cuda-cudart-dev
 - cuda-nvcc
@@ -19,7 +19,7 @@ dependencies:
 - dlpack>=0.8,<1.0
 - gcc_linux-aarch64=14.*
 - go
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/go_cuda-129_arch-x86_64.yaml b/conda/environments/go_cuda-129_arch-x86_64.yaml
index 0c84899580..92e76ec58a 100644
--- a/conda/environments/go_cuda-129_arch-x86_64.yaml
+++ b/conda/environments/go_cuda-129_arch-x86_64.yaml
@@ -7,8 +7,8 @@ channels:
 dependencies:
 - _go_select *=cgo
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - cmake>=3.30.4
 - cuda-cudart-dev
 - cuda-nvcc
@@ -19,7 +19,7 @@ dependencies:
 - dlpack>=0.8,<1.0
 - gcc_linux-64=14.*
 - go
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/go_cuda-131_arch-aarch64.yaml b/conda/environments/go_cuda-131_arch-aarch64.yaml
index 1b1f4a15b1..4cd1842aab 100644
--- a/conda/environments/go_cuda-131_arch-aarch64.yaml
+++ b/conda/environments/go_cuda-131_arch-aarch64.yaml
@@ -7,8 +7,8 @@ channels:
 dependencies:
 - _go_select *=cgo
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - cmake>=3.30.4
 - cuda-cudart-dev
 - cuda-nvcc
@@ -19,7 +19,7 @@ dependencies:
 - dlpack>=0.8,<1.0
 - gcc_linux-aarch64=14.*
 - go
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/go_cuda-131_arch-x86_64.yaml b/conda/environments/go_cuda-131_arch-x86_64.yaml
index 1a658372a9..a55270745f 100644
--- a/conda/environments/go_cuda-131_arch-x86_64.yaml
+++ b/conda/environments/go_cuda-131_arch-x86_64.yaml
@@ -7,8 +7,8 @@ channels:
 dependencies:
 - _go_select *=cgo
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - cmake>=3.30.4
 - cuda-cudart-dev
 - cuda-nvcc
@@ -19,7 +19,7 @@ dependencies:
 - dlpack>=0.8,<1.0
 - gcc_linux-64=14.*
 - go
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/rust_cuda-129_arch-aarch64.yaml b/conda/environments/rust_cuda-129_arch-aarch64.yaml
index a9a01a4f48..78506b130e 100644
--- a/conda/environments/rust_cuda-129_arch-aarch64.yaml
+++ b/conda/environments/rust_cuda-129_arch-aarch64.yaml
@@ -6,8 +6,8 @@ channels:
 - conda-forge
 dependencies:
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - cmake>=3.30.4
 - cuda-cudart-dev
 - cuda-nvcc
@@ -16,7 +16,7 @@ dependencies:
 - cuda-version=12.9
 - cxx-compiler
 - gcc_linux-aarch64=14.*
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/rust_cuda-129_arch-x86_64.yaml b/conda/environments/rust_cuda-129_arch-x86_64.yaml
index 5e57d4378d..96ae602eab 100644
--- a/conda/environments/rust_cuda-129_arch-x86_64.yaml
+++ b/conda/environments/rust_cuda-129_arch-x86_64.yaml
@@ -6,8 +6,8 @@ channels:
 - conda-forge
 dependencies:
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - cmake>=3.30.4
 - cuda-cudart-dev
 - cuda-nvcc
@@ -16,7 +16,7 @@ dependencies:
 - cuda-version=12.9
 - cxx-compiler
 - gcc_linux-64=14.*
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/rust_cuda-131_arch-aarch64.yaml b/conda/environments/rust_cuda-131_arch-aarch64.yaml
index 31df8d9fb0..c76e31b8f5 100644
--- a/conda/environments/rust_cuda-131_arch-aarch64.yaml
+++ b/conda/environments/rust_cuda-131_arch-aarch64.yaml
@@ -6,8 +6,8 @@ channels:
 - conda-forge
 dependencies:
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - cmake>=3.30.4
 - cuda-cudart-dev
 - cuda-nvcc
@@ -16,7 +16,7 @@ dependencies:
 - cuda-version=13.1
 - cxx-compiler
 - gcc_linux-aarch64=14.*
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/conda/environments/rust_cuda-131_arch-x86_64.yaml b/conda/environments/rust_cuda-131_arch-x86_64.yaml
index d4584b481d..9c070f283c 100644
--- a/conda/environments/rust_cuda-131_arch-x86_64.yaml
+++ b/conda/environments/rust_cuda-131_arch-x86_64.yaml
@@ -6,8 +6,8 @@ channels:
 - conda-forge
 dependencies:
 - c-compiler
-- clang-tools==20.1.4
-- clang==20.1.4
+- clang-tools==20.1.8
+- clang==20.1.8
 - cmake>=3.30.4
 - cuda-cudart-dev
 - cuda-nvcc
@@ -16,7 +16,7 @@ dependencies:
 - cuda-version=13.1
 - cxx-compiler
 - gcc_linux-64=14.*
-- libclang==20.1.4
+- libclang==20.1.8
 - libcublas-dev
 - libcurand-dev
 - libcusolver-dev
diff --git a/cpp/scripts/run-clang-tidy.py b/cpp/scripts/run-clang-tidy.py
index 2c051fd9f7..62c9762be7 100644
--- a/cpp/scripts/run-clang-tidy.py
+++ b/cpp/scripts/run-clang-tidy.py
@@ -1,4 +1,4 @@
-# SPDX-FileCopyrightText: Copyright (c) 2020-2025, NVIDIA CORPORATION.
+# SPDX-FileCopyrightText: Copyright (c) 2020-2026, NVIDIA CORPORATION.
 # SPDX-License-Identifier: Apache-2.0
 #
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
@@ -17,7 +17,7 @@
 import subprocess
 
 
-EXPECTED_VERSIONS = ("20.1.4",)
+EXPECTED_VERSIONS = ("20.1.8",)
 VERSION_REGEX = re.compile(r"clang version ([0-9.]+)")
 CMAKE_COMPILER_REGEX = re.compile(
     r"^\s*CMAKE_CXX_COMPILER:FILEPATH=(.+)\s*$", re.MULTILINE
diff --git a/dependencies.yaml b/dependencies.yaml
index a6494bc0e7..1b00df9180 100644
--- a/dependencies.yaml
+++ b/dependencies.yaml
@@ -285,9 +285,9 @@ dependencies:
     common:
       - output_types: conda
         packages:
-          - clang==20.1.4
-          - clang-tools==20.1.4
-          - libclang==20.1.4
+          - clang==20.1.8
+          - clang-tools==20.1.8
+          - libclang==20.1.8
   # 'cuda_version' intentionally does not contain fallback entries... we want
   # a loud error if an unsupported 'cuda' value is passed
   cuda_version: