From 9c4e940564af9aa61c3f57f309115cc0b874a3d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Wed, 13 Nov 2024 22:53:42 +0100
Subject: [PATCH] nixos-option: enable modernize-* checks in clang-tidy

---
 pkgs/tools/nix/nixos-option/.clang-tidy         | 2 +-
 pkgs/tools/nix/nixos-option/src/nixos-option.cc | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/pkgs/tools/nix/nixos-option/.clang-tidy b/pkgs/tools/nix/nixos-option/.clang-tidy
index cdc32d73afdf..6818a5afbe4c 100644
--- a/pkgs/tools/nix/nixos-option/.clang-tidy
+++ b/pkgs/tools/nix/nixos-option/.clang-tidy
@@ -5,8 +5,8 @@ Checks:
 # don't find them too problematic
 - -bugprone-easily-swappable-parameters
 - performance-*
+- modernize-*
 # TODO
-#  - modernize-*
 #  - readability-*
 #  - misc-*
 #  - portability-*
diff --git a/pkgs/tools/nix/nixos-option/src/nixos-option.cc b/pkgs/tools/nix/nixos-option/src/nixos-option.cc
index cc285b0d24ad..34acb78c66b6 100644
--- a/pkgs/tools/nix/nixos-option/src/nixos-option.cc
+++ b/pkgs/tools/nix/nixos-option/src/nixos-option.cc
@@ -82,8 +82,8 @@ class Out
     {}
     Out(const Out &) = delete;
     Out(Out &&) = default;
-    Out & operator=(const Out &) = delete;
-    Out & operator=(Out &&) = delete;
+    auto operator=(const Out &) -> Out & = delete;
+    auto operator=(Out &&) -> Out & = delete;
     ~Out() { ostream << end; }
 
   private:
@@ -92,9 +92,9 @@ class Out
     std::string end;
     LinePolicy policy;
     bool writeSinceSep;
-    template <typename T> friend Out & operator<<(Out & o, T thing);
+    template <typename T> friend auto operator<<(Out & o, T thing) -> Out &;
 
-    friend void printValue(Context & ctx, Out & out, std::variant<Value, std::exception_ptr> maybeValue, const std::string & path);
+    friend auto printValue(Context & ctx, Out & out, std::variant<Value, std::exception_ptr> maybeValue, const std::string & path) -> void;
 };
 
 template <typename T> Out & operator<<(Out & o, T thing)