Pull request 616: lint-cpp: switch to clangd-tidy and drop *-magic-numbers

Squashed commit of the following:

commit 542ff3c79526154aedd899f870e3d2b3c415844c
Author: Zhavoronkov Aleksei <a.zhavoronkov@adguard.com>
Date:   Thu Feb 5 17:51:04 2026 +0300

    lint-cpp: switch to clangd-tidy and drop *-magic-numbers
    
    Disable *-magic-numbers check because it takes a significant amount of time and no one actually uses it.
    Use clangd-tidy (https://github.com/lljbash/clangd-tidy) instead of clang-tidy in lint-cpp to speed up checks.
    
    Signed-off-by: Zhavoronkov Aleksei <a.zhavoronkov@adguard.com>

.clang-tidy

@@ -101,7 +101,9 @@ Checks: >-
   -cppcoreguidelines-use-enum-class,
   -portability-template-virtual-member-function,
   -modernize-use-integer-sign-comparison,
-  -misc-const-correctness
+  -misc-const-correctness,
+  -cppcoreguidelines-avoid-magic-numbers,
+  -readability-magic-numbers
 
 WarningsAsErrors: '*'
 

.clangd

@@ -0,0 +1,8 @@
+CompileFlags:
+  # TODO: Remove when https://github.com/clangd/clangd/issues/1167 will be fixed
+  Add: [-Wno-unknown-pragmas]
+Diagnostics:
+  # Available in clangd-14
+  UnusedIncludes: None
+  # Requires clangd-17
+  MissingIncludes: None

.github/workflows/run-tests.yml

@@ -35,6 +35,7 @@ jobs:
       - name: Install packages
         run: |
           sudo apt install -y ninja-build
+          pip install -r requirements.txt
           pip install conan~=$CONAN_VER
           pip install clang-format~=$CLANG_FORMAT_VER
           ## Install LLVM
@@ -130,6 +131,7 @@ jobs:
       - name: Install packages
         run: |
           brew install ninja llvm@21
+          pip install -r requirements.txt
           pip install conan~=$CONAN_VER
           pip install clang-format~=$CLANG_FORMAT_VER
           echo "/opt/homebrew/opt/llvm@21/bin" >> $GITHUB_PATH

Makefile

@@ -13,6 +13,7 @@ ifeq ($(origin MSVC_YEAR), undefined)
 	endif
 endif
 BUILD_DIR = build
+COMPILE_COMMANDS = $(BUILD_DIR)/compile_commands.json
 EXPORT_DIR ?= bin
 SETUP_WIZARD_DIR = trusttunnel/setup_wizard
 
@@ -101,7 +102,7 @@ lint: lint-md lint-rust lint-cpp
 
 ## Lint c++ files.
 .PHONY: lint-cpp
-lint-cpp: clang-format clang-tidy
+lint-cpp: clang-format clangd-tidy
 
 ## Check c++ code formatting with clang-format.
 .PHONY: clang-format
@@ -113,7 +114,15 @@ clang-format:
 ## Check c++ code formatting with clang-tidy.
 .PHONY: clang-tidy
 clang-tidy: compile_commands
-	run-clang-tidy -p $(BUILD_DIR) '^(?!.*(/third-party/)).*\.cpp$$'
+	run-clang-tidy -p $(BUILD_DIR) -config-file='.clang-tidy' '^(?!.*(/third-party/)).*\.cpp$$'
+
+## Check c++ code formatting with clangd-tidy.
+.PHONY: clangd-tidy
+clangd-tidy: compile_commands
+	jq -r '.[] | select(.file | endswith(".cpp")) | .file' $(COMPILE_COMMANDS) \
+		| grep -vE '(^|/)(third-party)(/|$$)' \
+		| sort -u \
+		| xargs clangd-tidy -p $(BUILD_DIR)
 
 ## Lint markdown files.
 ## `markdownlint-cli` should be installed:

bamboo-specs/run-tests.yaml

@@ -40,6 +40,7 @@ Run tests on Linux:
           - |-
             set -x -e
             
+            python3 -m pip install -r requirements.txt
             python3 -m pip install conan --upgrade
             
             conan remote add --index 0 art ${bamboo.conanRepoUrl} || true

requirements.txt

@@ -1 +1,2 @@
 pyyaml==6.0.3
+clangd-tidy