From f5ebaea2775da9991c5f7258bf8059b1b5770bab Mon Sep 17 00:00:00 2001
From: Robert Hensing <robert@roberthensing.nl>
Date: Wed, 17 Jul 2024 13:31:31 +0200
Subject: [PATCH] Simplify PosIdx::hash()

In C++ we don't need to salt the hash.
---
 src/libexpr/pos-idx.hh | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/src/libexpr/pos-idx.hh b/src/libexpr/pos-idx.hh
index f3ea3a2e5..2faa6b7fe 100644
--- a/src/libexpr/pos-idx.hh
+++ b/src/libexpr/pos-idx.hh
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <cinttypes>
-
-#include "std-hash.hh"
+#include <functional>
 
 namespace nix {
 
@@ -43,9 +42,7 @@ public:
 
     size_t hash() const noexcept
     {
-        size_t h = 854125;
-        hash_combine(h, id);
-        return h;
+        return std::hash<uint32_t>{}(id);
     }
 };