From 70ac7f8bd8e0f5360bb396fff263d314a8009964 Mon Sep 17 00:00:00 2001
From: Thomas Bereknyei <tomberek@gmail.com>
Date: Fri, 30 May 2025 00:28:58 -0400
Subject: [PATCH] ccache: recommend ignoring random_seed

Fixes: https://github.com/NixOS/nixpkgs/issues/109033
---
 nixos/modules/programs/ccache.nix | 1 +
 pkgs/top-level/all-packages.nix   | 1 +
 2 files changed, 2 insertions(+)

diff --git a/nixos/modules/programs/ccache.nix b/nixos/modules/programs/ccache.nix
index 99702f955162..7dad40fcec2c 100644
--- a/nixos/modules/programs/ccache.nix
+++ b/nixos/modules/programs/ccache.nix
@@ -81,6 +81,7 @@ in
           ccacheWrapper = super.ccacheWrapper.override {
             extraConfig = ''
               export CCACHE_COMPRESS=1
+              export CCACHE_SLOPPINESS=random_seed
               export CCACHE_DIR="${cfg.cacheDir}"
               export CCACHE_UMASK=007
               if [ ! -d "$CCACHE_DIR" ]; then
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 31d490db37ae..4d8730850804 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7145,6 +7145,7 @@ with pkgs;
   #     ccacheWrapper = pkgs.ccacheWrapper.override {
   #       extraConfig = ''
   #         export CCACHE_COMPRESS=1
+  #         export CCACHE_SLOPPINESS=random_seed
   #         export CCACHE_DIR=/var/cache/ccache
   #         export CCACHE_UMASK=007
   #       '';