Update clang-tidy config.

Author: hzeller

.clang-tidy

@@ -16,16 +16,38 @@
 #    fixing all the non-iterator cases is useful though. Off by default.
 ##
 Checks: >
+  bugprone-*,
+  -bugprone-branch-clone,
+  -bugprone-easily-swappable-parameters,
+  -bugprone-exception-escape,
+  -bugprone-move-forwarding-reference,
+  -bugprone-narrowing-conversions,
+  -bugprone-reserved-identifier,
   clang-diagnostic-*,clang-analyzer-*,
   -clang-analyzer-core.NonNullParamChecker,
   -clang-analyzer-cplusplus.NewDeleteLeaks,
   -clang-analyzer-unix.Malloc,
   -clang-analyzer-valist.Uninitialized,
   -clang-diagnostic-unused-const-variable,
+  google-*,
+  -google-readability-avoid-underscore-in-googletest-name,
+  -google-readability-braces-around-statements,
+  -google-readability-casting,
+  -google-readability-todo,
+  modernize-use-override,
+  misc-*,
+  -misc-no-recursion,
+  -misc-non-private-member-variables-in-classes,
+  -misc-redundant-expression,
+  -misc-unused-parameters,
+  -misc-use-anonymous-namespace,
+  performance-*,
   readability-*,
   -readability-braces-around-statements,
+  -readability-convert-member-functions-to-static,
   -readability-else-after-return,
   -readability-function-cognitive-complexity,
+  -readability-identifier-length,
   -readability-implicit-bool-conversion,
   -readability-isolate-declaration,
   -readability-magic-numbers,
@@ -35,26 +57,6 @@ Checks: >
   -readability-redundant-access-specifiers,
   -readability-uppercase-literal-suffix,
   -readability-use-anyofallof,
-  -readability-convert-member-functions-to-static,
-  google-*,
-  -google-readability-avoid-underscore-in-googletest-name,
-  -google-readability-braces-around-statements,
-  -google-readability-todo,
-  -google-readability-casting,
-  performance-*,
-  bugprone-*,
-  -bugprone-branch-clone,
-  -bugprone-easily-swappable-parameters,
-  -bugprone-exception-escape,
-  -bugprone-move-forwarding-reference,
-  -bugprone-narrowing-conversions,
-  -bugprone-reserved-identifier,
-  modernize-use-override,
-  misc-*,
-  -misc-no-recursion,
-  -misc-non-private-member-variables-in-classes,
-  -misc-redundant-expression,
-  -misc-unused-parameters,
 
 WarningsAsErrors: ''
 HeaderFilterRegex: ''

shell.nix

@@ -1,7 +1,3 @@
-# This is a nix-shell for use with the nix package manager.
-# If you have nix installed, you may simply run `nix-shell`
-# in this repo, and have all dependencies ready in the new shell.
-
 { pkgs ? import <nixpkgs> {} }:
 pkgs.mkShell {
   buildInputs = with pkgs;
@@ -14,7 +10,7 @@ pkgs.mkShell {
       gtest
       valgrind
       ghostscript
-      clang-tools_15
+      clang-tools_19
       graphviz
     ];
   shellHook =